[PATCH v2 2/6] scsi: ufs: Update the return value of supplier pm ops

[Can Guo <cang@codeaurora.org>]

rpm_get_suppliers() is returning an error only if the error is negative.
However, ufshcd_wl_resume() may return a positive error code, e.g., when
hibern8 or SSU cmd fails. Make the positive return value a negative error
code so that consumers are aware of any resume failure from their supplier.
Make the same change to ufshcd_wl_suspend() just to keep symmetry.

Signed-off-by: Can Guo <cang@codeaurora.org>
---
 drivers/scsi/ufs/ufshcd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 3836a0a..809d0cb 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8912,7 +8912,7 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
 		ufshcd_release(hba);
 	}
 	hba->wl_pm_op_in_progress = false;
-	return ret;
+	return ret <= 0 ? ret : -EINVAL;
 }
 
 static int __ufshcd_wl_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
@@ -8999,7 +8999,7 @@ static int __ufshcd_wl_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
 	hba->clk_gating.is_suspended = false;
 	ufshcd_release(hba);
 	hba->wl_pm_op_in_progress = false;
-	return ret;
+	return ret <= 0 ? ret : -EINVAL;
 }
 
 static int ufshcd_wl_runtime_suspend(struct device *dev)
-- 
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