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authorStefan Haberland <stefan.haberland@de.ibm.com>2014-11-24 10:59:44 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-11-28 09:47:36 +0100
commit932f0549f872cde022eed200910ee3291b1d3c69 (patch)
tree0dcb57d16b8fcb88a1af654cad25fa3da364abc7 /drivers/s390/block/dasd.c
parent2c17124bf33f0d9450375610ff79ad83531b5bfe (diff)
downloadop-kernel-dev-932f0549f872cde022eed200910ee3291b1d3c69.zip
op-kernel-dev-932f0549f872cde022eed200910ee3291b1d3c69.tar.gz
s390/dasd: fix list corruption for sleep_on requests
Fix race for sleep_on requests leading to list corruption. The SLEEP_ON_END_TAG is set during CQR clean up. Remove it from interrupt handler to avoid the CQR from being cleared when it is still in the device_queue. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd.c')
-rw-r--r--drivers/s390/block/dasd.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 8cb120e..4abf1196 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1697,11 +1697,8 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
if (cqr->status == DASD_CQR_CLEAR_PENDING &&
scsw_fctl(&irb->scsw) & SCSW_FCTL_CLEAR_FUNC) {
cqr->status = DASD_CQR_CLEARED;
- if (cqr->callback_data == DASD_SLEEPON_START_TAG)
- cqr->callback_data = DASD_SLEEPON_END_TAG;
dasd_device_clear_timer(device);
wake_up(&dasd_flush_wq);
- wake_up(&generic_waitq);
dasd_schedule_device_bh(device);
return;
}
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