This is a note to let you know that I've just added the patch titled
bnxt_en: Wait for FLR to complete during probe
to the 6.7-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:
bnxt_en-wait-for-flr-to-complete-during-probe.patch
and it can be found in the queue-6.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c6cfa8547d19c5c8f5f9a9fe22bd0b1064af03a7
Author: Michael Chan <michael.chan@xxxxxxxxxxxx>
Date: Wed Jan 17 15:45:11 2024 -0800
bnxt_en: Wait for FLR to complete during probe
[ Upstream commit 3c1069fa42872f95cf3c6fedf80723d391e12d57 ]
The first message to firmware may fail if the device is undergoing FLR.
The driver has some recovery logic for this failure scenario but we must
wait 100 msec for FLR to complete before proceeding. Otherwise the
recovery will always fail.
Fixes: ba02629ff6cb ("bnxt_en: log firmware status on firmware init failure")
Reviewed-by: Damodharam Ammepalli <damodharam.ammepalli@xxxxxxxxxxxx>
Signed-off-by: Michael Chan <michael.chan@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240117234515.226944-2-michael.chan@xxxxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index e1f1e646cf48..1019b4dc7bed 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -12298,6 +12298,11 @@ static int bnxt_fw_init_one_p1(struct bnxt *bp)
bp->fw_cap = 0;
rc = bnxt_hwrm_ver_get(bp);
+ /* FW may be unresponsive after FLR. FLR must complete within 100 msec
+ * so wait before continuing with recovery.
+ */
+ if (rc)
+ msleep(100);
bnxt_try_map_fw_health_reg(bp);
if (rc) {
rc = bnxt_try_recover_fw(bp);
