diff options
| author | Shane Huang <shane.huang@amd.com> | 2013-06-08 16:00:16 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-20 17:16:08 -0700 |
| commit | 95a5e329938d9a57365ff6d84de17772910ea9a6 (patch) | |
| tree | aa46ecb97aa17f6450e07fceafdb4ec99a83d4ea | |
| parent | 7fe6b2b4994fcdede2274c23ad0886f2cb3549f3 (diff) | |
ahci: remove pmp link online check in FBS EH
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.ac@gmail.com>
Signed-off-by: Shane Huang <shane.huang@amd.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/ata/libahci.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 34c82167b962..09f60471f517 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -1560,8 +1560,7 @@ static void ahci_error_intr(struct ata_port *ap, u32 irq_stat) 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; } |