hulk inclusion
category: bugfix
bugzilla: 175146
CVE: NA

------------------------------------

Disable userswap by default and add a kernel parameter to enable it.
Signed-off-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

 Conflicts:
	include/linux/userfaultfd_k.h
Signed-off-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

hulk inclusion
category: bugfix
bugzilla: 175146
CVE: NA

------------------------------------

Syzkaller caught the following BUG_ON:

------------[ cut here ]------------
kernel BUG at fs/userfaultfd.c:909!
Internal error: Oops - BUG: 0 [#1] SMP
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
Process syz-executor.2 (pid: 1994, stack limit = 0x0000000048da525b)
CPU: 0 PID: 1994 Comm: syz-executor.2 Not tainted 4.19.90+ #6
Hardware name: linux,dummy-virt (DT)
pstate: 80000005 (Nzcv daif -PAN -UAO)
pc : userfaultfd_release+0x4f0/0x6a0 fs/userfaultfd.c:908
lr : userfaultfd_release+0x4f0/0x6a0 fs/userfaultfd.c:908
sp : ffff80017d247c80
x29: ffff80017d247c90 x28: ffff80019b25f720
x27: 2000000000100077 x26: ffff80017c28fe40
x25: ffff80019b25f770 x24: ffff80019b25f7e0
x23: ffff80019b25e378 x22: 1ffff0002fa48fa6
x21: ffff80017f103200 x20: dfff200000000000
x19: ffff80017c28fe40 x18: 0000000000000000
x17: ffffffff00000001 x16: 0000000000000000
x15: 0000000000000000 x14: 0000000000000000
x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000000
x9 : 1ffff0002fa48fa6 x8 : ffff10002fa48fa6
x7 : ffff20000add39f0 x6 : 00000000f2000000
x5 : 0000000000000000 x4 : ffff10002fa48f76
x3 : ffff200008000000 x2 : ffff20000a61d000
x1 : ffff800160aa9000 x0 : 0000000000000000
Call trace:
 userfaultfd_release+0x4f0/0x6a0 fs/userfaultfd.c:908
 __fput+0x20c/0x688 fs/file_table.c:278
 ____fput+0x24/0x30 fs/file_table.c:309
 task_work_run+0x13c/0x2f8 kernel/task_work.c:135
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 do_notify_resume+0x380/0x628 arch/arm64/kernel/signal.c:728
 work_pending+0x8/0x10
Code: 97ecb0e4 d4210000 17ffffc7 97ecb0e1 (d4210000)
---[ end trace de790a3f637d9e60 ]---

In userfaultfd_release(), we check if 'vm_userfaultfd_ctx' and
'vm_flags&(VM_UFFD_MISSING|VM_UFFD_WP)' are not zero at the same time.
If not, it is bug. But we lack checking for VM_USWAP flag. So add it to
avoid the false BUG_ON(). This patch also fix several other issues.

Fixes: c3e6287f ("userswap: support userswap via userfaultfd")
Signed-off-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

 Conflicts:
	fs/userfaultfd.c
Signed-off-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-v5.13-rc1
commit 9a446cf9
category: feature
bugzilla: 175249
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9a446cf97af70ee81ba177703b67ac4955a5edcc

----------------------------------------------------------------------

Fix warning Woverflow on type conversion reported on x86_64:

  drivers/spi/spi-hisi-kunpeng.c:361:9: warning: conversion from 'long unsigned int' to 'u32'
  {aka 'unsigned int'} changes value from '18446744073709551600' to '4294967280' [-Woverflow]

The registers are 32 bit, so fix by casting to u32.

Fixes: c770d863 ("spi: Add HiSilicon SPI Controller Driver for Kunpeng SoCs")
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Nkernel test robot <lkp@intel.com>
Signed-off-by: NJay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1617762660-54681-1-git-send-email-f.fangjian@huawei.comSigned-off-by: NMark Brown <broonie@kernel.org>
Reviewed-by: NChengwen Feng <fengchengwen@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-v5.13-rc1
commit c770d863
category: feature
bugzilla: 175249
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c770d8631e1810d8f1ce21b18ad5dd67eeb39e5c

----------------------------------------------------------------------

This driver supports SPI Controller for HiSilicon Kunpeng SoCs. This
driver supports SPI operations using FIFO mode of transfer.

DMA is not supported, and we just use IRQ mode for operation completion
notification.

Only ACPI firmware is supported.
Signed-off-by: NJay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616836200-45827-1-git-send-email-f.fangjian@huawei.comSigned-off-by: NMark Brown <broonie@kernel.org>
Reviewed-by: NChengwen Feng <fengchengwen@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit e8a4d0da
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8a4d0daaef6fc8f965ca0b8e9585aa9698a0f24

------------------------------------------------------------------------

If an internal task abort timeout occurs, the controller has developed a
fault, and needs to be reset to be recovered.

When this occurs during error handling, the current policy is to allow
error handling to continue, and the inevitable nexus ha reset will handle
the required reset.

However various steps of error handling need to taken before this happens.
These also involve some level of HW interaction, which will also fail with
various timeouts.

Speed up this process by recording a HW fault bit for an internal abort
timeout - when this is set, just automatically error any HW interaction,
and essentially go straight to clear nexus ha (to reset the controller).

Link: https://lore.kernel.org/r/1623058179-80434-6-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 63ece9eb
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=63ece9eb350312ee33327269480482dfac8555db

------------------------------------------------------------------------

If an internal task abort timeout occurs, the controller has developed a
fault, and needs to be reset to be recovered. However if a timeout occurs
during SCSI error handling, issuing a controller reset immediately may
conflict with the error handling.

To handle internal abort in these two scenarios, only queue the reset when
not in an error handling function. In the case of a timeout during error
handling, do nothing and rely on the inevitable ha nexus reset to reset the
controller.

Link: https://lore.kernel.org/r/1623058179-80434-5-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 2f12a499
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2f12a499511f40c268d6dfa4bf7fbe2344d2e6d3

------------------------------------------------------------------------

Include HZ in timer macros to make the code more concise.

Link: https://lore.kernel.org/r/1623058179-80434-4-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 0f757339
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0f757339919d31533aeadbbfd62f2dd4a49e851f

------------------------------------------------------------------------

For a clear nexus reset operation, the I_T nexus resets are executed
serially for each device. For devices attached through an expander, this
may take 2s per device; so, in total, could take a long time.

Reduce the total time by running the I_T nexus resets in parallel through
async operations.

Link: https://lore.kernel.org/r/1623058179-80434-3-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 366da0da
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=366da0da1f5fe4e7e702f5864a557e57f485431f

------------------------------------------------------------------------

If an OOB event is received but the phy still fails to come up, a link
reset will be issued repeatedly at an interval of 20s until the phy comes
up.

Set a limit for link reset issue retries to avoid printing the timeout
message endlessly.

Link: https://lore.kernel.org/r/1623058179-80434-2-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit d377f415
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d377f415dddc18b33c88dcd41cfe4fe6d9db82fb

------------------------------------------------------------------------

This patch prepares for converting SAM status codes into an enum. Without
this patch converting SAM status codes into an enumeration type would
trigger complaints about enum type mismatches for the SAS code.

Link: https://lore.kernel.org/r/20210524025457.11299-2-bvanassche@acm.org
Cc: Hannes Reinecke <hare@suse.com>
Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Cc: Jason Yan <yanaijie@huawei.com>
Reviewed-by: NJohn Garry <john.garry@huawei.com>
Reviewed-by: NHimanshu Madhani <himanshu.madhani@oracle.com>
Acked-by: NJack Wang <jinpu.wang@ionos.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit ab17122e
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab17122e758ef68fb21033e25c041144067975f5

------------------------------------------------------------------------

After commit 6c11dc06 ("scsi: hisi_sas: Fix IRQ checks") we have the
error codes returned by platform_get_irq() ready for the propagation
upsream in interrupt_init_v1_hw() -- that will fix still broken deferred
probing. Let's propagate the error codes from devm_request_irq() as well
since I don't see the reason to override them with -ENOENT...

Link: https://lore.kernel.org/r/49ba93a3-d427-7542-d85a-b74fe1a33a73@omp.ruAcked-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NSergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit f4df167a
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f4df167ad5a2274c12680ba3e7d816d32d1fc375

------------------------------------------------------------------------

Add (pseudo) SAS address for ATA software reset failure log to assist in
debugging.

Link: https://lore.kernel.org/r/1617709711-195853-7-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 2d31cb20
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2d31cb20a3cd611a9a544f9586eb3908ee2085cf

------------------------------------------------------------------------

If a channel interrupt occurs without any status bit set, the handler will
return directly. However, if such redundant interrupts are received, it's
better to check what happen, so add logs for this.

Link: https://lore.kernel.org/r/1617709711-195853-6-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NYihang Li <liyihang6@hisilicon.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 2c74cb1f
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2c74cb1f9222ebfcc204c02018275ad167d25212

------------------------------------------------------------------------

The debugfs snapshot should be executed before the reset occurs to ensure
that the register contents are saved properly.

As such, it is incorrect to queue the debugfs dump when running a reset as
the reset will occur prior to the snapshot work item is handler.

Therefore, directly snapshot registers in the reset work handler.

Link: https://lore.kernel.org/r/1617709711-195853-5-git-send-email-john.garry@huawei.comSigned-off-by: NJianqin Xie <xiejianqin@hisilicon.com>
Signed-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit f4676665
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f467666504bf0c7eae95b929d0c86f77ff9b4356

------------------------------------------------------------------------

Function sas_unregister_ha() needs to be called to roll back if
hisi_hba->hw->hw_init() fails in function hisi_sas_probe() or
hisi_sas_v3_probe(). Make that change.

Link: https://lore.kernel.org/r/1617709711-195853-4-git-send-email-john.garry@huawei.comSigned-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 4da0b7f6
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4da0b7f6fac331f2d2336df3ca88a335f545b4dc

------------------------------------------------------------------------

To help debugging efforts, print the device SAS address for v3 hw erroneous
completion log.

Here is an example print:

hisi_sas_v3_hw 0000:b4:02.0: erroneous completion iptt=2193 task=000000002b0c13f8 dev id=17 addr=570fd45f9d17b001

Link: https://lore.kernel.org/r/1617709711-195853-3-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 2843d2fb
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2843d2fb42254ac443c83e5e0b97e1cae6b7a4de

------------------------------------------------------------------------

The debugfs code has been relocated to v3 hw driver, so delete unused
struct hisi_sas_hw function pointers snapshot_{prepare, restore}.

Link: https://lore.kernel.org/r/1617709711-195853-2-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit cd96fe60
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cd96fe600cc4924d8d0cc6e3161870219c0d2c12

------------------------------------------------------------------------

The controller provides trace FIFO DFX tool to assist link fault debugging
and link optimization. This tool can be helpful when debugging link faults
without SAS analyzers. Each PHY has an independent trace FIFO interface.

The user can configure the trace FIFO tool of one PHY by using the
following six interfaces:

signal_sel: select signal group applies to different scenarios.
  0x0: linkrate negotiation
  0x1: Host 12G TX train
  0x2: Disk 12G TX train
  0x3: SAS PHY CTRL DFX 0
  0x4: SAS PHY CTRL DFX 1
  0x5: SAS PCS DFX
  other: linkrate negotiation
dump_mask: The masked hardware status bit will not be updated.
dump_mode: determines how to dump data after trigger signal is generated.
  0x0: dump forever
  0x1: dump 32 data after trigger signal is generated
  0x2: no more dump after trigger signal is generated
trigger_mode: determines the trigger mode, level or edge.
  0x0: dump when trigger signal changed
  0x1: dump when trigger signal's level equal to trigger_level
  0x2: dump when trigger signal's level different from trigger_level
trigger_level: determines the trigger level.
trigger_msk: mask trigger signal

The user can get 32-byte values from hardware by reading the rd_data.
These values consitute the status record of the hardware at different time
points.

Link: https://lore.kernel.org/r/1611659068-131975-6-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 6834ec8b
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6834ec8b23c3eb345936022d46179b9d371e2344

------------------------------------------------------------------------

If the controller reset occurs at the same time as driver removal, it may
be possible that the interrupts have been released prior to the host
softreset, and calling pci_irq_vector() there causes a WARN:

WARNING: CPU: 37 PID: 1542 /pci/msi.c:1275 pci_irq_vector+0xc0/0xd0
Call trace:
pci_irq_vector+0xc0/0xd0
disable_host_v3_hw+0x58/0x5b0 [hisi_sas_v3_hw]
soft_reset_v3_hw+0x40/0xc0 [hisi_sas_v3_hw]
hisi_sas_controller_reset+0x150/0x260 [hisi_sas_main]
hisi_sas_rst_work_handler+0x3c/0x58 [hisi_sas_main]

To fix, flush the driver workqueue prior to releasing the interrupts to
ensure any resets have been completed.

Link: https://lore.kernel.org/r/1611659068-131975-5-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 1dbe61bf
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1dbe61bf7d760547d16ccf057572e641a653ad4a

------------------------------------------------------------------------

Add a config option to enable debugfs support by default. And if debugfs
support is enabled by default, dump count default value is increased to 50
as generally users want something bigger than the current default in that
situation.

Link: https://lore.kernel.org/r/1611659068-131975-4-git-send-email-john.garry@huawei.comSigned-off-by: NLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 69bfa5fd
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=69bfa5fd7b448b2cd0cce6a301cf3fba8133ca0f

------------------------------------------------------------------------

Now that v2 and v3 hw expose their HW queues (and so shost.nr_hw_queues is
set), remove the conditional checks in hisi_sas_task_prep().

This change would affect v1 HW performance (as it does not expose HW
queues), but nobody uses it and support may be dropped soon.

Link: https://lore.kernel.org/r/1611659068-131975-3-git-send-email-john.garry@huawei.comReviewed-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 4d287d8b
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4d287d8bae1f395b5e5d79bc9673dacab7975e36

------------------------------------------------------------------------

The platform_get_irq() check for -EPROBE_DEFER was to ensure that all the
steps to add the SCSI host are not done and then only to realise that the
probe needs to be deferred.

However, since there is now an earlier check for this in
hisi_sas_interrupt_preinit(), this check is superfluous and may be removed.

Link: https://lore.kernel.org/r/1611659068-131975-2-git-send-email-john.garry@huawei.comSigned-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 65f7cfba
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=65f7cfba6196baf2fc06ac0ab0be764377f3206a

------------------------------------------------------------------------

These variants were added for bisectability. Remove them, as all call sites
have now been convertd to use the original API.

Link: https://lore.kernel.org/r/20210118100955.1761652-20-a.darwish@linutronix.de
Cc: Jason Yan <yanaijie@huawei.com>
Reviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 36cdfd0f
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=36cdfd0f7a8c99c5817bea2306613a966e67f0e2

------------------------------------------------------------------------

libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original libas API, while still passing GFP context.
The libsas _gfp() variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-19-a.darwish@linutronix.deReviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit c1220866
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c12208668aefd91f33e41183a3e6f85979ac953f

------------------------------------------------------------------------

libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original libas API, while still passing GFP context.
The libsas _gfp() variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-18-a.darwish@linutronix.de
Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit f76d9f1a
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f76d9f1a1511eeb8a10c8f88c3c73ec2e0cba992

------------------------------------------------------------------------

libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original event notifiers API, while still passing GFP
context.  The _gfp() notifier variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-17-a.darwish@linutronix.de
Cc: Jason Yan <yanaijie@huawei.com>
Reviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit de6d7547
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=de6d7547ce1d78aa8d7bc6662d3a3dce023fbc6e

------------------------------------------------------------------------

libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original libas API, while still passing GFP context.
The libsas _gfp() variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-16-a.darwish@linutronix.de
Cc: Jack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: NJohn Garry <john.garry@huawei.com>
Reviewed-by: NJack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 093289e4
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=093289e40b521e977ae0f3a4e7c0909b38c21193

------------------------------------------------------------------------

libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original libas API, while still passing GFP context.
The libsas _gfp() variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-15-a.darwish@linutronix.deReviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 872a90b5
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=872a90b5b46646c6d4cdc15a265a55b1adb25b49

------------------------------------------------------------------------

libsas event notifiers required an extension where gfp_t flags must be
explicitly passed. For bisectability, a temporary _gfp() variant of such
functions were added. All call sites then got converted use the _gfp()
variants and explicitly pass GFP context. Having no callers left, the
original libsas notifiers were then modified to accept gfp_t flags by
default.

Switch back to the original libas API, while still passing GFP context.
The libsas _gfp() variants will be removed afterwards.

Link: https://lore.kernel.org/r/20210118100955.1761652-14-a.darwish@linutronix.deReviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 5d6a75a1
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d6a75a1edf63ff243d937253ced62d8edea30b5

------------------------------------------------------------------------

All call-sites of below libsas APIs:

  - sas_alloc_event()
  - sas_notify_port_event()
  - sas_notify_phy_event()

have been converted to use the _gfp()-suffixed version.  Modify the
original APIs above to take a gfp_t flags parameter by default.

For bisectability, call-sites will be modified again to use the original
libsas APIs (while passing gfp_t). The temporary _gfp()-suffixed versions
can then be removed.

Link: https://lore.kernel.org/r/20210118100955.1761652-13-a.darwish@linutronix.de
Cc: Jason Yan <yanaijie@huawei.com>
Reviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 26c7efc3
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=26c7efc3f95260fd90e6cb268b47a58cf27ffc64

------------------------------------------------------------------------

Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

Below are the context analysis for modified functions:

=> hisi_sas_bytes_dmaed():

Since it is invoked from both process and atomic contexts, let its callers
pass the gfp_t flags:

  * hisi_sas_main.c:
  ------------------

    hisi_sas_phyup_work(): workqueue context
      -> hisi_sas_bytes_dmaed(..., GFP_KERNEL)

    hisi_sas_controller_reset_done(): has an msleep()
      -> hisi_sas_rescan_topology()
        -> hisi_sas_phy_down()
          -> hisi_sas_bytes_dmaed(..., GFP_KERNEL)

    hisi_sas_debug_I_T_nexus_reset(): calls wait_for_completion_timeout()
      -> hisi_sas_phy_down()
        -> hisi_sas_bytes_dmaed(..., GFP_KERNEL)

  * hisi_sas_v1_hw.c:
  -------------------

    int_abnormal_v1_hw(): irq handler
      -> hisi_sas_phy_down()
        -> hisi_sas_bytes_dmaed(..., GFP_ATOMIC)

  * hisi_sas_v[23]_hw.c:
  ----------------------

    int_phy_updown_v[23]_hw(): irq handler
      -> phy_down_v[23]_hw()
        -> hisi_sas_phy_down()
          -> hisi_sas_bytes_dmaed(..., GFP_ATOMIC)

=> int_bcast_v1_hw() and phy_bcast_v3_hw():

Both are invoked exclusively from irq handlers. Pass GFP_ATOMIC.

Link: https://lore.kernel.org/r/20210118100955.1761652-12-a.darwish@linutronix.deReviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 111d06ab
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=111d06ab77c9f45fc4b8fc8be918b45154dafd44

------------------------------------------------------------------------

Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

Context analysis:

  aic94xx_hwi.c: asd_dl_tasklet_handler()
    -> asd_ascb::tasklet_complete()
    == escb_tasklet_complete()
      -> aic94xx_scb.c: asd_phy_event_tasklet()
      -> aic94xx_scb.c: asd_bytes_dmaed_tasklet()
      -> aic94xx_scb.c: asd_link_reset_err_tasklet()
      -> aic94xx_scb.c: asd_primitive_rcvd_tasklet()

All functions are invoked by escb_tasklet_complete(), which is invoked by
the tasklet handler. Pass GFP_ATOMIC.

Link: https://lore.kernel.org/r/20210118100955.1761652-11-a.darwish@linutronix.deReviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit cd4e8176
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cd4e8176989f4909550ac7b95f475e993ae67f8b

------------------------------------------------------------------------

Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

Call chain analysis, pm8001_hwi.c:

  pm8001_interrupt_handler_msix() || pm8001_interrupt_handler_intx() || pm8001_tasklet()
    -> PM8001_CHIP_DISP->isr() = pm80xx_chip_isr()
      -> process_oq [spin_lock_irqsave(&pm8001_ha->lock, ...)]
        -> process_one_iomb()
          -> mpi_hw_event()
            -> hw_event_sas_phy_up()
              -> pm8001_bytes_dmaed()
            -> hw_event_sata_phy_up
              -> pm8001_bytes_dmaed()

All functions are invoked by process_one_iomb(), which is invoked by the
interrupt service routine and the tasklet handler. A similar call chain is
also found at pm80xx_hwi.c. Pass GFP_ATOMIC.

For pm8001_sas.c, pm8001_phy_control() runs in task context as it calls
wait_for_completion() and msleep().  Pass GFP_KERNEL.

Link: https://lore.kernel.org/r/20210118100955.1761652-10-a.darwish@linutronix.de
Cc: Jack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: NJohn Garry <john.garry@huawei.com>
Reviewed-by: NJack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 19a39831
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19a39831ff99f88ea8d01a2b6716084f14752529

------------------------------------------------------------------------

Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.

Context analysis:

  - sas_enable_revalidation(): process, acquires mutex
  - sas_resume_ha(): process, calls wait_event_timeout()

Link: https://lore.kernel.org/r/20210118100955.1761652-9-a.darwish@linutronix.de
Cc: Jason Yan <yanaijie@huawei.com>
Reviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NAhmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 3997e0fd
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3997e0fdd5878a7d6224056176800c1db538f468

------------------------------------------------------------------------

Now that the driver always uses managed interrupts, delete
auto_affine_msi_experimental module param.

Link: https://lore.kernel.org/r/1609763622-34119-2-git-send-email-john.garry@huawei.comSigned-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 74a29219
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=74a2921948ed8c0e7f079a98442ec3493168cc85

------------------------------------------------------------------------

As a performance enhancement, make the completion queue interrupts managed.

In addition, in commit bf0beec0 ("blk-mq: drain I/O when all CPUs in a
hctx are offline"), CPU hotplug for MQ devices using managed interrupts is
made safe. So expose HW queues to blk-mq to take advantage of this.

Flag Scsi_host.host_tagset is also set to ensure that the HBA is not sent
more commands than it can handle. However the driver still does not use
request tag for IPTT as there are many HW bugs means that special rules
apply for IPTT allocation.

Link: https://lore.kernel.org/r/1606905417-183214-6-git-send-email-john.garry@huawei.comSigned-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit e15f2fa9
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e15f2fa959f2cce8a05e8e3a596e75d068cd42c5

------------------------------------------------------------------------

Drivers for multi-queue platform devices may also want managed interrupts
for handling HW queue completion interrupts, so add support.

The function accepts an affinity descriptor pointer, which covers all IRQs
expected for the device.

The function is devm class as the only current in-tree user will also use
devm method for requesting the interrupts; as such, the function is made
as devm as it can ensure ordering of freeing the irq and disposing of the
mapping.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMarc Zyngier <maz@kernel.org>
Acked-by: NMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1606905417-183214-5-git-send-email-john.garry@huawei.comReviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 1c3f69b4
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1c3f69b4543af0aad514c127298e5ea40392575d

------------------------------------------------------------------------

The functionality of acpi_dev_irqresource_disabled() is same as in common
irqresource_disabled(), so drop acpi_dev_irqresource_disabled() in favour
of that function.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMarc Zyngier <maz@kernel.org>
Acked-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/1606905417-183214-4-git-send-email-john.garry@huawei.comReviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 9806731d
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9806731db684a475ade1e95d166089b9edbd9da3
------------------------------------------------------------------------

Add a common function to set the fields for a irq resource to disabled,
which mimics what is done in acpi_dev_irqresource_disabled(), with a view
to replace that function.
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMarc Zyngier <maz@kernel.org>
Reviewed-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/1606905417-183214-3-git-send-email-john.garry@huawei.comReviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mainline inclusion
from mainline-master
commit 1d3aec89
category: bugfix
bugzilla: 175270
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1d3aec89286254487df7641c30f1b14ad1d127a5
------------------------------------------------------------------------

Add a function to allow the affinity of an interrupt be switched to
managed, such that interrupts allocated for platform devices may be
managed.

This new interface has certain limitations, and attempts to use it in the
following circumstances will fail:
- For when the kernel is configured for generic IRQ reservation mode (in
  config GENERIC_IRQ_RESERVATION_MODE). The reason being that it could
  conflict with managed vs. non-managed interrupt accounting.
- The interrupt is already started, which should not be the case during
  init
- The interrupt is already configured as managed, which means double init
Suggested-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1606905417-183214-2-git-send-email-john.garry@huawei.comReviewed-by: NOuyangdelong <ouyangdelong@huawei.com>
Signed-off-by: NNifujia <nifujia1@hisilicon.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>