This is a note to let you know that I've just added the patch titled
scsi: csiostor: Add module softdep on cxgb4
to the 5.4-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:
scsi-csiostor-add-module-softdep-on-cxgb4.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7b6048be83a2aa38c1221ca65fec97b1c5c3a955
Author: Rahul Lakkireddy <rahul.lakkireddy@xxxxxxxxxxx>
Date: Mon Sep 27 21:44:08 2021 +0530
scsi: csiostor: Add module softdep on cxgb4
[ Upstream commit 79a7482249a7353bc86aff8127954d5febf02472 ]
Both cxgb4 and csiostor drivers run on their own independent Physical
Function. But when cxgb4 and csiostor are both being loaded in parallel via
modprobe, there is a race when firmware upgrade is attempted by both the
drivers.
When the cxgb4 driver initiates the firmware upgrade, it halts the firmware
and the chip until upgrade is complete. When the csiostor driver is coming
up in parallel, the firmware mailbox communication fails with timeouts and
the csiostor driver probe fails.
Add a module soft dependency on cxgb4 driver to ensure loading csiostor
triggers cxgb4 to load first when available to avoid the firmware upgrade
race.
Link: https://lore.kernel.org/r/1632759248-15382-1-git-send-email-rahul.lakkireddy@xxxxxxxxxxx
Fixes: a3667aaed569 ("[SCSI] csiostor: Chelsio FCoE offload driver")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@xxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/scsi/csiostor/csio_init.c b/drivers/scsi/csiostor/csio_init.c
index a6dd704d7f2d..1b8ccadc7cf6 100644
--- a/drivers/scsi/csiostor/csio_init.c
+++ b/drivers/scsi/csiostor/csio_init.c
@@ -1257,3 +1257,4 @@ MODULE_DEVICE_TABLE(pci, csio_pci_tbl);
MODULE_VERSION(CSIO_DRV_VERSION);
MODULE_FIRMWARE(FW_FNAME_T5);
MODULE_FIRMWARE(FW_FNAME_T6);
+MODULE_SOFTDEP("pre: cxgb4");
