| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 20/42] scsi: ufs: Release clock if DMA map fails | Date | Tue, 9 Jun 2020 19:44:26 +0200 |
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From: Can Guo <cang@codeaurora.org>
commit 17c7d35f141ef6158076adf3338f115f64fcf760 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> --- drivers/scsi/ufs/ufshcd.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -1512,6 +1512,7 @@ static int ufshcd_queuecommand(struct Sc err = ufshcd_map_sg(hba, lrbp); if (err) { + ufshcd_release(hba); lrbp->cmd = NULL; clear_bit_unlock(tag, &hba->lrb_in_use); goto out;
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