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scsi: ufs: Release clock if DMA map fails 

commit 17c7d35f14 upstream.

In queuecommand path, if DMA map fails, it bails out with clock held.  In
this case, release the clock to keep its usage paired.

[mkp: applied by hand]

Link: https://lore.kernel.org/r/0101016ed3d66395-1b7e7fce-b74d-42ca-a88a-4db78b795d3b-000000@us-west-2.amazonses.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[EB: resolved cherry-pick conflict caused by newer kernels not having
 the clear_bit_unlock() line]
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Can Guo 2019-12-05 02:14:33 +00:00 committed by Greg Kroah-Hartman
parent 95ffc2a5ce
commit d628f7a59e
1 changed files with 1 additions and 0 deletions
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1
drivers/scsi/ufs/ufshcd.c
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@ -2480,6 +2480,7 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
err = ufshcd_map_sg(hba, lrbp);
if (err) {
ufshcd_release(hba);
lrbp->cmd = NULL;
clear_bit_unlock(tag, &hba->lrb_in_use);
goto out;