[PATCH v2 4/4] mptsas: ask for deferred probe

From: Luis R. Rodriguez
Date: Mon Jul 28 2014 - 14:29:59 EST

From: "Luis R. Rodriguez" <mcgrof@xxxxxxxx>

Its reported that mptsas can at times take over 30 seconds
to recognize SCSI storage devices [0], this is done on the
driver's probe path. Use the the deferred probe workqueue
to allow long init sequences to complete.

[0] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1276705

Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>
Cc: One Thousand Gnomes <gnomes@xxxxxxxxxxxxxxxxxxx>
Cc: Tim Gardner <tim.gardner@xxxxxxxxxxxxx>
Cc: Pierre Fersing <pierre-fersing@xxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Benjamin Poirier <bpoirier@xxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Nagalakshmi Nandigama <nagalakshmi.nandigama@xxxxxxxxxxxxx>
Cc: Praveen Krishnamoorthy <praveen.krishnamoorthy@xxxxxxxxxxxxx>
Cc: Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxxx>
Cc: Abhijit Mahajan <abhijit.mahajan@xxxxxxxxxxxxx>
Cc: Hariprasad S <hariprasad@xxxxxxxxxxx>
Cc: Santosh Rastapur <santosh@xxxxxxxxxxx>
Cc: MPT-FusionLinux.pdl@xxxxxxxxxxxxx
Cc: linux-scsi@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxx>
drivers/message/fusion/mptsas.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 711fcb5..3859ac3 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -5382,6 +5382,9 @@ MODULE_DEVICE_TABLE(pci, mptsas_pci_table);

static struct pci_driver mptsas_driver = {
+ .driver = {
+ .delay_probe = true,
+ },
.name = "mptsas",
.id_table = mptsas_pci_table,
.probe = mptsas_probe,

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/