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  1. 12 5月, 2011 1 次提交
    • B
      sfc: Always map MCDI shared memory as uncacheable · 747df225
      由 Ben Hutchings 提交于 
      We enabled write-combining for memory-mapped registers in commit
65f0b417, but inhibited it for the
MCDI shared memory where this is not supported.  However,
write-combining mappings also allow read-reordering, which may also
be a problem.

I found that when an SFC9000-family controller is connected to an
Intel 3000 chipset, and write-combining is enabled, the controller
stops responding to PCIe read requests during driver initialisation
while the driver is polling for completion of an MCDI command.  This
results in an NMI and system hang.  Adding read memory barriers
between all reads to the shared memory area appears to reduce but not
eliminate the probability of this.

We have not yet established whether this is a bug in our BIU or in the
PCIe bridge.  For now, work around by mapping the shared memory area
separately.
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
      747df225
  3. 03 5月, 2011 4 次提交
  5. 30 4月, 2011 6 次提交
    • A
      mii: add support of pause frames in mii_get_an · 2b5a4ace
      由 artpol 提交于 
      Add support of pause frames advertise in mii_get_an. This provides all drivers
that use mii_ethtool_gset to represent their own and Link partner flow control
abilities in ethtool.
Signed-off-by: NArtem Polyakov <artpol84@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      2b5a4ace
    • A
      net: ftmac100: fix scheduling while atomic during PHY link status change · eee9700c
      由 Adam Jaremko 提交于 
      Signed-off-by: NAdam Jaremko <adam.jaremko@gmail.com>
Acked-by: NPo-Yu Chuang <ratbert@faraday-tech.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      eee9700c
    • D
      usbnet: add support for some Huawei modems with cdc-ether ports · b3c914aa
      由 Dan Williams 提交于 
      Some newer Huawei devices (T-Mobile Rocket, others) have cdc-ether
compatible ports, so recognize and expose them.
Signed-off-by: NDan Williams <dcbw@redhat.com>
Acked-by: NOliver Neukum <oneukum@suse.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      b3c914aa
    • N
      bnx2: cancel timer on device removal · 8333a46a
      由 Neil Horman 提交于 
      This oops was recently reported to me:

invalid opcode: 0000 [#1] SMP
last sysfs file:
/sys/devices/pci0000:00/0000:00:01.0/0000:01:0d.0/0000:02:05.0/device
CPU 1
Modules linked in: bnx2(+) sunrpc ipv6 dm_mirror dm_region_hash dm_log sg
microcode serio_raw amd64_edac_mod edac_core edac_mce_amd k8temp i2c_piix4
shpchp ext4 mbcache jbd2 sd_mod crc_t10dif mptsas mptscsih mptbase
scsi_transport_sas radeon ttm drm_kms_helper drm hwmon i2c_algo_bit i2c_core
dm_mod [last unloaded: bnx2]

Modules linked in: bnx2(+) sunrpc ipv6 dm_mirror dm_region_hash dm_log sg
microcode serio_raw amd64_edac_mod edac_core edac_mce_amd k8temp i2c_piix4
shpchp ext4 mbcache jbd2 sd_mod crc_t10dif mptsas mptscsih mptbase
scsi_transport_sas radeon ttm drm_kms_helper drm hwmon i2c_algo_bit i2c_core
dm_mod [last unloaded: bnx2]
Pid: 23900, comm: pidof Not tainted 2.6.32-130.el6.x86_64 #1 BladeCenter LS21
-[797251Z]-
RIP: 0010:[<ffffffffa058b270>]  [<ffffffffa058b270>] 0xffffffffa058b270
RSP: 0018:ffff880002083e48  EFLAGS: 00010246
RAX: ffff880002083e90 RBX: ffff88007ccd4000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: dead000000200200 RDI: ffff8800007b8700
RBP: ffff880002083ed0 R08: ffff88000208db40 R09: 0000022d191d27c8
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800007b9bc8
R13: ffff880002083e90 R14: ffff8800007b8700 R15: ffffffffa058b270
FS:  00007fbb3bcf7700(0000) GS:ffff880002080000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001664a98 CR3: 0000000060395000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process pidof (pid: 23900, threadinfo ffff8800007e8000, task ffff8800091c0040)
Stack:
 ffffffff81079f77 ffffffff8109e010 ffff88007ccd5c20 ffff88007ccd5820
<0> ffff88007ccd5420 ffff8800007e9fd8 ffff8800007e9fd8 0000010000000000
<0> ffff88007ccd5020 ffff880002083e90 ffff880002083e90 ffffffff8102a00d
Call Trace:
 <IRQ>
 [<ffffffff81079f77>] ? run_timer_softirq+0x197/0x340
 [<ffffffff8109e010>] ? tick_sched_timer+0x0/0xc0
 [<ffffffff8102a00d>] ? lapic_next_event+0x1d/0x30
 [<ffffffff8106f737>] __do_softirq+0xb7/0x1e0
 [<ffffffff81092cc0>] ? hrtimer_interrupt+0x140/0x250
 [<ffffffff81185f90>] ? filldir+0x0/0xe0
 [<ffffffff8100c2cc>] call_softirq+0x1c/0x30
 [<ffffffff8100df05>] do_softirq+0x65/0xa0
 [<ffffffff8106f525>] irq_exit+0x85/0x90
 [<ffffffff814e3340>] smp_apic_timer_interrupt+0x70/0x9b
 [<ffffffff8100bc93>] apic_timer_interrupt+0x13/0x20
 <EOI>
 [<ffffffff81211ba5>] ? selinux_file_permission+0x45/0x150
 [<ffffffff81262a75>] ? _atomic_dec_and_lock+0x55/0x80
 [<ffffffff812050c6>] security_file_permission+0x16/0x20
 [<ffffffff811861c1>] vfs_readdir+0x71/0xe0
 [<ffffffff81186399>] sys_getdents+0x89/0xf0
 [<ffffffff8100b172>] system_call_fastpath+0x16/0x1b

It occured during some stress testing, in which the reporter was repeatedly
removing and modprobing the bnx2 module while doing various other random
operations on the bnx2 registered net device.  Noting that this error occured on
a serdes based device, we noted that there were a few ethtool operations (most
notably self_test and set_phys_id) that have execution paths that lead into
bnx2_setup_serdes_phy.  This function is notable because it executes a mod_timer
call, which starts the bp->timer running.  Currently bnx2 is setup to assume
that this timer only nees to be stopped when bnx2_close or bnx2_suspend is
called.  Since the above ethtool operations are not gated on the net device
having been opened however, that assumption is incorrect, and can lead to the
timer still running after the module has been removed, leading to the oops above
(as well as other simmilar oopses).

Fix the problem by ensuring that the timer is stopped when pci_device_unregister
is called.
Signed-off-by: NNeil Horman <nhorman@tuxdriver.com>
Reported-by: NHushan Jia <hjia@redhat.com>
CC: Michael Chan <mchan@broadcom.com>
CC: "David S. Miller" <davem@davemloft.net>
Acked-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      8333a46a
    • S
      iwl4965: fix "Received BA when not expected" · 16b345d8
      由 Stanislaw Gruszka 提交于 
      Need to use broadcast sta_id for management frames, otherwise we broke
BA session in the firmware and get messages like that:

"Received BA when not expected"

or (on older kernels):

"BA scd_flow 0 does not match txq_id 10"

This fix regression introduced in 2.6.35 during station management
code rewrite by:

commit 2a87c26b
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Fri Apr 30 11:30:45 2010 -0700

    iwlwifi: use iwl_find_station less
Signed-off-by: NStanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      16b345d8
    • S
      iwlagn: fix "Received BA when not expected" · bfd36103
      由 Stanislaw Gruszka 提交于 
      Need to use broadcast sta_id for management frames, otherwise we broke
BA session in the firmware and get messages like that:

"Received BA when not expected"

or (on older kernels):

"BA scd_flow 0 does not match txq_id 10"

This fix regression introduced in 2.6.35 during station management
code rewrite by:

commit 2a87c26b
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Fri Apr 30 11:30:45 2010 -0700

    iwlwifi: use iwl_find_station less

Patch partially resolve:
https://bugzilla.kernel.org/show_bug.cgi?id=16691
However, there are still 11n performance problems on 4965 and 5xxx
devices that need to be investigated.

Cc: stable@kernel.org # 2.6.35+
Signed-off-by: NStanislaw Gruszka <sgruszka@redhat.com>
Acked-by: NJohannes Berg <johannes@sipsolutions.net>
Acked-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      bfd36103
  7. 29 4月, 2011 4 次提交
  9. 25 4月, 2011 1 次提交
  11. 24 4月, 2011 2 次提交
  13. 23 4月, 2011 1 次提交
    • N
      netconsole: fix deadlock when removing net driver that netconsole is using (v2) · 13f172ff
      由 Neil Horman 提交于 
      A deadlock was reported to me recently that occured when netconsole was being
used in a virtual guest.  If the virtio_net driver was removed while netconsole
was setup to use an interface that was driven by that driver, the guest
deadlocked.  No backtrace was provided because netconsole was the only console
configured, but it became clear pretty quickly what the problem was.  In
netconsole_netdev_event, if we get an unregister event, we call
__netpoll_cleanup with the target_list_lock held and irqs disabled.
__netpoll_cleanup can, if pending netpoll packets are waiting call
cancel_delayed_work_sync, which is a sleeping path.  the might_sleep call in
that path gets triggered, causing a console warning to be issued.  The
netconsole write handler of course tries to take the target_list_lock again,
which we already hold, causing deadlock.

The fix is pretty striaghtforward.  Simply drop the target_list_lock and
re-enable irqs prior to calling __netpoll_cleanup, the re-acquire the lock, and
restart the loop.  Confirmed by myself to fix the problem reported.
Signed-off-by: NNeil Horman <nhorman@tuxdriver.com>
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      13f172ff
  15. 22 4月, 2011 3 次提交
  17. 21 4月, 2011 2 次提交
  19. 20 4月, 2011 3 次提交
  21. 18 4月, 2011 3 次提交
  23. 15 4月, 2011 2 次提交
  25. 14 4月, 2011 3 次提交
  27. 13 4月, 2011 5 次提交