mei: vsc: Prevent timeout error with added delay post-firmware download

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@vger.kernel.org # for 6.8+
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Tested-by: Jason Chen <jason.z.chen@intel.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://lore.kernel.org/r/20240625081047.4178494-3-wentong.wu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/mei/platform-vsc.c b/drivers/misc/mei/platform-vsc.c
index 1ec65d87488a3361b2487d43abffe2b2caad2423..d02f6e881139f1289e712275f64417d294d74498 100644 (file)
--- 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))