libata: fix EH action overwriting in ata_eh_reset()

Commit a674050e068a2919908730279f0b731ae6d2e005 upstream

ehc->i.action got accidentally overwritten to ATA_EH_HARD/SOFTRESET in
ata_eh_reset().  The original intention was to clear reset action
which wasn't selected.  This can cause unexpected behavior when other
EH actions are scheduled together with reset.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Cc: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 4b0f24fc89f7d06e2ef718f6b1d65300c24cdf9e..27023e37fc34ad27d1012bb3b04393b5fd0ee6db 100644 (file)
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2112,10 +2112,10 @@ int ata_eh_reset(struct ata_link *link, int classify,
        ehc->i.action &= ~ATA_EH_RESET;
        if (hardreset) {
                reset = hardreset;
-               ehc->i.action = ATA_EH_HARDRESET;
+               ehc->i.action |= ATA_EH_HARDRESET;
        } else if (softreset) {
                reset = softreset;
-               ehc->i.action = ATA_EH_SOFTRESET;
+               ehc->i.action |= ATA_EH_SOFTRESET;
        }
 
        if (prereset) {