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  1. 04 10月, 2008 1 次提交
  3. 17 9月, 2008 2 次提交
    • S
      [S390] cio: fix orb initialization in cio_start_key · 9adb8c1d
      由 Stefan Weinhuber 提交于 
      The functions cio_tm_start_key and cio_start_key use the same private
orb structure of a subchannel, so the orb needs to be cleared of old
data before it is used again. A respective memset is missing from
cio_start_key and hereby added.
Signed-off-by: NStefan Weinhuber <wein@de.ibm.com>
Acked-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      9adb8c1d
    • C
      [S390] cio: Fix driver_data handling for ccwgroup devices. · f26fd5d6
      由 Cornelia Huck 提交于 
      Since 16f7f956, we've seen
oopses when grouping/ungrouping devices:

Unable to handle kernel pointer dereference at virtual kernel address 0000000000
114000
Oops: 0004 [#1] PREEMPT SMP
Modules linked in: bonding qeth_l2 dm_multipath sunrpc qeth_l3 dm_mod qeth chsc_
sch ccwgroup
CPU: 1 Not tainted 2.6.26-29.x.20080815-s390xdefault #1
Process iperf (pid: 24412, task: 000000003f446038, ksp: 000000003c929e08)
Krnl PSW : 0404d00180000000 000003e00006f6e6 (qeth_irq+0xda/0xb28 [qeth])
           R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 EA:3
Krnl GPRS: 0000000000000000 000003e000000003 0000000000000000 0000000000114ccc
           000000003fb82e48 000003e00006f60c 000000000000000c 000000003ce72100
           0000000000114944 000000003fb82e48 0000000000114ccc 000000003fe8fd28
           000003e000066000 000003e000076128 000000003fe8fdb8 000000003fe8fd28
Krnl Code: 000003e00006f6da: bf3f2024            icm     %r3,15,36(%r2)
           000003e00006f6de: a774023c            brc     7,3e00006fb56
           000003e00006f6e2: a7280000            lhi     %r2,0
          >000003e00006f6e6: 5020a1a0            st      %r2,416(%r10)
           000003e00006f6ea: 58109000            l       %r1,0(%r9)
           000003e00006f6ee: a7111000            tmll    %r1,4096
           000003e00006f6f2: a77400f9            brc     7,3e00006f8e4
           000003e00006f6f6: 8810000c            srl     %r1,12
Call Trace:
([<000000003fe8fd20>] 0x3fe8fd20)
 [<000000000033bf2a>] ccw_device_call_handler+0xb2/0xd8
 [<0000000000339e1c>] ccw_device_irq+0x124/0x164
 [<0000000000339758>] io_subchannel_irq+0x8c/0x118
 [<00000000003309ba>] do_IRQ+0x192/0x1bc
 [<0000000000114f66>] io_return+0x0/0x8
 [<00000000001149cc>] sysc_do_svc+0x0/0x22
([<0000000000114a18>] sysc_noemu+0x10/0x16)
 [<00000200002e047c>] 0x200002e047c
Last Breaking-Event-Address:
 [<000003e00006f6d6>] qeth_irq+0xca/0xb28 [qeth]

The problem is that dev->driver_data for a ccw device is NULL,
while it should point to the ccwgroup device it is a member of.
This happened due to incorrect cleanup if creating a ccwgroup
device failed because the ccw devices were already grouped.

Fix this by setting cdev[i] to NULL in the error handling of
ccwgroup_create_from_string() after we give up our reference and
by checking if the driver_data points to the ccwgroup device in
ccwgroup_release() just to be really sure.
Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      f26fd5d6
  5. 09 9月, 2008 3 次提交
  7. 22 8月, 2008 5 次提交
  9. 01 8月, 2008 3 次提交
    • H
      [S390] qdio: fix section mismatch bug. · 3f1934bc
      由 Heiko Carstens 提交于 
      Fix the two section mismatch warnings below.
This fixes two real bugs since the code which has __exit annotations
may already be gone when it is called.

WARNING: vmlinux.o(.init.text+0x1cc4a): Section mismatch in reference from the function init_QDIO() to the function .exit.text:qdio_setup_exit()
The function __init init_QDIO() references
a function __exit qdio_setup_exit().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __exit annotation of
qdio_setup_exit() so it may be used outside an exit section.

WARNING: vmlinux.o(.init.text+0x1cc7a): Section mismatch in reference from the function init_QDIO() to the function .exit.text:qdio_remove_perf_stats()
The function __init init_QDIO() references
a function __exit qdio_remove_perf_stats().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __exit annotation of
qdio_remove_perf_stats() so it may be used outside an exit section.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      3f1934bc
    • J
      [S390] qdio: make sure qdr is aligned to page size · 3b8e3004
      由 Jan Glauber 提交于 
      kzalloc does not guarantee the required alignment of qdr to page size,
use get_zeroed_page instead.
Signed-off-by: NJan Glauber <jang@linux.vnet.ibm.com>
      3b8e3004
    • M
      [S390] cio: Memory allocation for idset changed. · 883e512c
      由 Michael Ernst 提交于 
      Memory allocation for the quite huge idset changed from
kzalloc to vmalloc.
Signed-off-by: NMichael Ernst <mernst@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      883e512c
  11. 17 7月, 2008 2 次提交
  13. 14 7月, 2008 24 次提交