scsi: ufs: host: mediatek: Change reset sequence for improved stability

Modify the reset sequence to ensure that the device reset pin is set low
before the host is disabled. This change enhances the stability of the
reset process by ensuring the correct order of operations.

Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20250811131423.3444014-10-peter.wang@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
index e3d99981a802246a5d1575e6440687d10054b8ff..647b6eb053982c58e9749de9d969e33d8bc2fa45 100644 (file)
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -1543,11 +1543,11 @@ static int ufs_mtk_device_reset(struct ufs_hba *hba)
 {
        struct arm_smccc_res res;
 
-       /* disable hba before device reset */
-       ufshcd_hba_stop(hba);
-
        ufs_mtk_device_reset_ctrl(0, res);
 
+       /* disable hba in middle of device reset */
+       ufshcd_hba_stop(hba);
+
        /*
         * The reset signal is active low. UFS devices shall detect
         * more than or equal to 1us of positive or negative RST_n