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[1/1] scsi: ufs: Enable quirk to ignore sending WRITE_SAME command

Message ID 1516767755-22855-1-git-send-email-asutoshd@codeaurora.org (mailing list archive)
State Accepted
Headers show

Commit Message

Asutosh Das (asd) Jan. 24, 2018, 4:22 a.m. UTC 
From: Sujit Reddy Thumma <sthumma@codeaurora.org>

WRITE_SAME command is not supported by UFS. Enable a quirk for
the upper level drivers to not send WRITE SAME command.

Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
---
 drivers/scsi/ufs/ufshcd.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Martin K. Petersen Jan. 31, 2018, 2:21 a.m. UTC | #1 
Asutosh,

>  	/* WRITE_SAME command is not supported*/
>  	sdev->no_write_same = 1;
>  
> +	/* WRITE_SAME command is not supported*/
> +	sdev->no_write_same = 1;
> +

Uhm...

I applied this change to 4.16/scsi-fixes by hand.
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Patch

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 8af2af3..5a8dc3b 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -4356,6 +4356,9 @@  static int ufshcd_slave_alloc(struct scsi_device *sdev)
 	/* WRITE_SAME command is not supported*/
 	sdev->no_write_same = 1;
 
+	/* WRITE_SAME command is not supported*/
+	sdev->no_write_same = 1;
+
 	ufshcd_set_queue_depth(sdev);
 
 	ufshcd_get_lu_power_on_wp_status(hba, sdev);