[PATCH 7/7][Unstable] UBUNTU: SAUCE: mei: vsc: Prevent timeout error with added delay post-firmware download

[You-Sheng Yang]

From: Wentong Wu <wentong.wu at intel.com>

BugLink: https://bugs.launchpad.net/bugs/2067364

After completing the firmware download, the firmware requires some
time to become functional. This change introduces additional sleep
time before the first read operation to prevent a confusing timeout
error in vsc_tp_xfer().

Fixes: 566f5ca97680 ("mei: Add transport driver for IVSC device")
Cc: stable at vger.kernel.org # for 6.8+
Signed-off-by: Wentong Wu <wentong.wu at intel.com>
Tested-by: Jason Chen <jason.z.chen at intel.com>
(cherry picked from https://lore.kernel.org/all/20240624014223.4171341-5-wentong.wu@intel.com/)
Signed-off-by: You-Sheng Yang <vicamo.yang at canonical.com>
---
 drivers/misc/mei/platform-vsc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/mei/platform-vsc.c b/drivers/misc/mei/platform-vsc.c
index 1ec65d87488a..d02f6e881139 100644
--- a/drivers/misc/mei/platform-vsc.c
+++ b/drivers/misc/mei/platform-vsc.c
@@ -28,8 +28,8 @@
 
 #define MEI_VSC_MAX_MSG_SIZE		512
 
-#define MEI_VSC_POLL_DELAY_US		(50 * USEC_PER_MSEC)
-#define MEI_VSC_POLL_TIMEOUT_US		(200 * USEC_PER_MSEC)
+#define MEI_VSC_POLL_DELAY_US		(100 * USEC_PER_MSEC)
+#define MEI_VSC_POLL_TIMEOUT_US		(400 * USEC_PER_MSEC)
 
 #define mei_dev_to_vsc_hw(dev)		((struct mei_vsc_hw *)((dev)->hw))
 
-- 
2.43.0