Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-01 01:31:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

[SCSI] libsas: don't recover 'gone' devices in sas_ata_hard_reset()

Browse Source 
The commands that timeout when a disk is forcibly removed may trigger
libata to attempt recovery of the device.  If libsas has decided to
remove the device don't permit ata to continue to issue resets to its
last known phy.

The primary motivation for this patch is hotplug testing by writing 0 to
/sys/class/sas_phy/phyX/enable.  Without this check this test leads to
libata issuing a reset and re-enabling the device that wants to be torn
down.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Dan Williams 2011-12-22 14:58:24 -08:00 committed by James Bottomley
parent f41a0c441c
commit cb48d672bf
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/scsi/libsas/sas_ata.c
View File

@ -326,6 +326,9 @@ static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
struct domain_device *dev = ap->private_data;
struct sas_internal *i = dev_to_sas_internal(dev);
if (test_bit(SAS_DEV_GONE, &dev->state))
return -ENODEV;
res = i->dft->lldd_I_T_nexus_reset(dev);
if (res != TMF_RESP_FUNC_COMPLETE)