commit: eb0e85e36b971ec31610eda7e3ff5c11c1c44785 From: Tejun Heo <[email protected]> Date: Thu, 24 Feb 2011 19:30:37 +0100 Subject: [PATCH] libata: fix hotplug for drivers which don't implement LPM
ata_eh_analyze_serror() suppresses hotplug notifications if LPM is being used because LPM generates spurious hotplug events. It compared whether link->lpm_policy was different from ATA_LPM_MAX_POWER to determine whether LPM is enabled; however, this is incorrect as for drivers which don't implement LPM, lpm_policy is always ATA_LPM_UNKNOWN. This disabled hotplug detection for all drivers which don't implement LPM. Fix it by comparing whether lpm_policy is greater than ATA_LPM_MAX_POWER. Signed-off-by: Tejun Heo <[email protected]> Cc: [email protected] Signed-off-by: Jeff Garzik <[email protected]> --- drivers/ata/libata-eh.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 17a6378..e16850e 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1618,7 +1618,7 @@ static void ata_eh_analyze_serror(struct ata_link *link) * host links. For disabled PMP links, only N bit is * considered as X bit is left at 1 for link plugging. */ - if (link->lpm_policy != ATA_LPM_MAX_POWER) + if (link->lpm_policy > ATA_LPM_MAX_POWER) hotplug_mask = 0; /* hotplug doesn't work w/ LPM */ else if (!(link->flags & ATA_LFLAG_DISABLED) || ata_is_host_link(link)) hotplug_mask = SERR_PHYRDY_CHG | SERR_DEV_XCHG; _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
