[PATCH v2 1/2] ufs: core: add debug log for uic command timeout

[peter.wang at mediatek.com]

From: Peter Wang <peter.wang at mediatek.com>

It is difficult to debug when a UIC command timeout occurs
simultaneously with a UIC command complete interrupt.
Currently, we only see the timeout log without any debug
information, making it unclear whether the UFS device failed
to respond or the host entered an incorrect state.
Add a one-line log to cover this situation.

Signed-off-by: Peter Wang <peter.wang at mediatek.com>
---
 drivers/ufs/core/ufshcd.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 604043a7533d..ec175a099459 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -5564,8 +5564,11 @@ static irqreturn_t ufshcd_uic_cmd_compl(struct ufs_hba *hba, u32 intr_status)
 
 	guard(spinlock_irqsave)(hba->host->host_lock);
 	cmd = hba->active_uic_cmd;
-	if (!cmd)
+	if (!cmd) {
+		dev_err(hba->dev,
+			"No active UIC command. Maybe a timeout occurred?\n");
 		return retval;
+	}
 
 	if (ufshcd_is_auto_hibern8_error(hba, intr_status))
 		hba->errors |= (UFSHCD_UIC_HIBERN8_MASK & intr_status);
-- 
2.45.2