GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-23 07:12:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

[SCSI] libsas: don't recover end devices attached to disabled phys

Browse source 
If userspace has decided to disable a phy the kernel should honor that
and not inadvertantly re-enable the phy via error recovery.  This is
more straightforward in the sata case where link recovery (via
libata-eh) is separate from sas_task cancelling in libsas-eh.  Teach
libsas to accept -ENODEV as a successful response from I_T_nexus_reset
('successful' in terms of not escalating further).

This is a more comprehensive fix then "libsas: don't recover 'gone'
devices in sas_ata_hard_reset()", as it is no longer sata-specific.

aic94xx does check the return value from sas_phy_reset() so if the phy
is disabled we proceed with clearing the I_T_nexus.

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 2012-01-30 21:40:45 -08:00 • committed by James Bottomley
parent 77c309f3cd
commit 26a2e68f81
4 changed files with 8 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

3
drivers/scsi/libsas/sas_init.c
View file

@ -298,6 +298,9 @@ int sas_phy_reset(struct sas_phy *phy, int hard_reset)
int ret;
enum phy_func reset_type;
if (!phy->enabled)
return -ENODEV;
if (hard_reset)
reset_type = PHY_FUNC_HARD_RESET;
else