mei: gsc: demote unexpected reset print

Discrete graphic card can go to D3cold.
On the exit from D3cold the link reset is performed.
Driver did not expect such link reset and print warning.

Print debug message for unexpected reset in discrete graphic
case and remove infrastructure to print warning is some cases.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250918130435.3327400-6-alexander.usyskin@intel.com

1 files changed, 3 insertions, 39 deletions

diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index 3172dc095b53..d4612c659784 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -494,43 +494,6 @@ static int mei_me_hw_ready_wait(struct mei_device *dev)
 }
 
 /**
- * mei_me_check_fw_reset - check for the firmware reset error and exception conditions
- *
- * @dev: mei device
- */
-static void mei_me_check_fw_reset(struct mei_device *dev)
-{
-	struct mei_fw_status fw_status;
-	char fw_sts_str[MEI_FW_STATUS_STR_SZ] = {0};
-	int ret;
-	u32 fw_pm_event = 0;
-
-	if (!dev->saved_fw_status_flag)
-		goto end;
-
-	if (dev->gsc_reset_to_pxp == MEI_DEV_RESET_TO_PXP_PERFORMED) {
-		ret = mei_fw_status(dev, &fw_status);
-		if (!ret) {
-			fw_pm_event = fw_status.status[1] & PCI_CFG_HFS_2_PM_EVENT_MASK;
-			if (fw_pm_event != PCI_CFG_HFS_2_PM_CMOFF_TO_CMX_ERROR &&
-			    fw_pm_event != PCI_CFG_HFS_2_PM_CM_RESET_ERROR)
-				goto end;
-		} else {
-			dev_err(&dev->dev, "failed to read firmware status: %d\n", ret);
-		}
-	}
-
-	mei_fw_status2str(&dev->saved_fw_status, fw_sts_str, sizeof(fw_sts_str));
-	dev_warn(&dev->dev, "unexpected reset: fw_pm_event = 0x%x, dev_state = %u fw status = %s\n",
-		 fw_pm_event, dev->saved_dev_state, fw_sts_str);
-
-end:
-	if (dev->gsc_reset_to_pxp == MEI_DEV_RESET_TO_PXP_PERFORMED)
-		dev->gsc_reset_to_pxp = MEI_DEV_RESET_TO_PXP_DONE;
-	dev->saved_fw_status_flag = false;
-}
-
-/**
  * mei_me_hw_start - hw start routine
  *
  * @dev: mei device
@@ -540,8 +503,9 @@ static int mei_me_hw_start(struct mei_device *dev)
 {
 	int ret = mei_me_hw_ready_wait(dev);
 
-	if (kind_is_gsc(dev) || kind_is_gscfi(dev))
-		mei_me_check_fw_reset(dev);
+	if ((kind_is_gsc(dev) || kind_is_gscfi(dev)) &&
+	    dev->gsc_reset_to_pxp == MEI_DEV_RESET_TO_PXP_PERFORMED)
+		dev->gsc_reset_to_pxp = MEI_DEV_RESET_TO_PXP_DONE;
 	if (ret)
 		return ret;
 	dev_dbg(&dev->dev, "hw is ready\n");