This is a note to let you know that I've just added the patch titled
ahci: remove pmp link online check in FBS EH
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ahci-remove-pmp-link-online-check-in-fbs-eh.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 912b9ac683b112615d5605686f1dc086402ce9f7 Mon Sep 17 00:00:00 2001
From: Shane Huang <shane.hu...@amd.com>
Date: Sat, 8 Jun 2013 16:00:16 +0800
Subject: ahci: remove pmp link online check in FBS EH
From: Shane Huang <shane.hu...@amd.com>
commit 912b9ac683b112615d5605686f1dc086402ce9f7 upstream.
ata_link_online() check in ahci_error_intr() is unnecessary, it should
be removed otherwise may lead to lockup with FBS enabled PMP.
http://marc.info/?l=linux-ide&m=137050421603272&w=2
Reported-by: Yu Liu <liuyu...@gmail.com>
Signed-off-by: Shane Huang <shane.hu...@amd.com>
Signed-off-by: Tejun Heo <t...@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/ata/libahci.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -1543,8 +1543,7 @@ static void ahci_error_intr(struct ata_p
u32 fbs = readl(port_mmio + PORT_FBS);
int pmp = fbs >> PORT_FBS_DWE_OFFSET;
- if ((fbs & PORT_FBS_SDE) && (pmp < ap->nr_pmp_links) &&
- ata_link_online(&ap->pmp_link[pmp])) {
+ if ((fbs & PORT_FBS_SDE) && (pmp < ap->nr_pmp_links)) {
link = &ap->pmp_link[pmp];
fbs_need_dec = true;
}
Patches currently in stable-queue which might be from shane.hu...@amd.com are
queue-3.4/ahci-add-amd-cz-sata-device-id.patch
queue-3.4/ahci-remove-pmp-link-online-check-in-fbs-eh.patch
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