[SCSI] ibmvscsi: Fix softlockup on resume

Browse source

This fixes a softlockup seen on resume. During resume, the CRQ
must be reenabled. However, the H_ENABLE_CRQ hcall used to do
this may return H_BUSY or H_LONG_BUSY. When this happens, the
caller is expected to retry later. This patch changes a simple
loop, which was causing the softlockup, to a loop at task level
which sleeps between retries rather than simply spinning.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

...

This commit is contained in:

Brian King 2010-06-17 13:56:00 -05:00 • committed by James Bottomley

parent 06395193b2

commit 0f33ece5bc

3 changed files with 106 additions and 31 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

117

drivers/scsi/ibmvscsi/ibmvscsi.c

View file

4

drivers/scsi/ibmvscsi/ibmvscsi.h

View file

16

drivers/scsi/ibmvscsi/rpa_vscsi.c

View file