Re: [PATCH 2/2] scsi: ufs: Remove the ufshcd_hba_exit() call from ufshcd_async_scan()

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On 12/19/2023 6:52 AM, Bart Van Assche wrote:
Calling ufshcd_hba_exit() from a function that is called asynchronously
from ufshcd_init() is wrong because this triggers multiple race
conditions. Instead of calling ufshcd_hba_exit(), log an error message.

Reported-by: Daniel Mentz <danielmentz@xxxxxxxxxx>
Fixes: 1d337ec2f35e ("ufs: improve init sequence")
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
  drivers/ufs/core/ufshcd.c | 7 ++-----
  1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 0ad8bde39cd1..7c59d7a02243 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -8982,12 +8982,9 @@ static void ufshcd_async_scan(void *data, async_cookie_t cookie)
out:
  	pm_runtime_put_sync(hba->dev);
-	/*
-	 * If we failed to initialize the device or the device is not
-	 * present, turn off the power/clocks etc.
-	 */
+
  	if (ret)
-		ufshcd_hba_exit(hba);
+		dev_err(hba->dev, "%s failed: %d\n", __func__, ret);
  }
static enum scsi_timeout_action ufshcd_eh_timed_out(struct scsi_cmnd *scmd)

Reviewed-by: Can Guo <quic_cang@xxxxxxxxxxx>




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