This is a note to let you know that I've just added the patch titled
scsi: qla2xxx: Zero undefined mailbox IN registers
to the 5.19-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-qla2xxx-zero-undefined-mailbox-in-registers.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6c96a3c7d49593ef15805f5e497601c87695abc9 Mon Sep 17 00:00:00 2001
From: Bikash Hazarika <bhazarika@xxxxxxxxxxx>
Date: Tue, 12 Jul 2022 22:20:38 -0700
Subject: scsi: qla2xxx: Zero undefined mailbox IN registers
From: Bikash Hazarika <bhazarika@xxxxxxxxxxx>
commit 6c96a3c7d49593ef15805f5e497601c87695abc9 upstream.
While requesting a new mailbox command, driver does not write any data to
unused registers. Initialize the unused register value to zero while
requesting a new mailbox command to prevent stale entry access by firmware.
Link: https://lore.kernel.org/r/20220713052045.10683-4-njavali@xxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
Signed-off-by: Bikash Hazarika <bhazarika@xxxxxxxxxxx>
Signed-off-by: Quinn Tran <qutran@xxxxxxxxxxx>
Signed-off-by: Nilesh Javali <njavali@xxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_mbx.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -238,6 +238,8 @@ qla2x00_mailbox_command(scsi_qla_host_t
ql_dbg(ql_dbg_mbx, vha, 0x1112,
"mbox[%d]<-0x%04x\n", cnt, *iptr);
wrt_reg_word(optr, *iptr);
+ } else {
+ wrt_reg_word(optr, 0);
}
mboxes >>= 1;
Patches currently in stable-queue which might be from bhazarika@xxxxxxxxxxx are
queue-5.19/scsi-qla2xxx-fix-incorrect-display-of-max-frame-size.patch
queue-5.19/scsi-qla2xxx-zero-undefined-mailbox-in-registers.patch
