[PATCH v1 3/3] scsi: ufs-mediatek: Print host information for failed supsend and resume

From: Stanley Chu
Date: Mon Jun 15 2020 - 10:31:34 EST


Print host state and register dumps while suspend or resume flow
is failed.

Signed-off-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx>
---
drivers/scsi/ufs/ufs-mediatek.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index d56ce8d97d4e..b0f626f6f9fe 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -469,22 +469,25 @@ static int ufs_mtk_link_set_hpm(struct ufs_hba *hba)

err = ufshcd_hba_enable(hba);
if (err)
- return err;
+ goto out;

err = ufs_mtk_unipro_set_pm(hba, 0);
if (err)
- return err;
+ goto out;

err = ufshcd_uic_hibern8_exit(hba);
if (!err)
ufshcd_set_link_active(hba);
else
- return err;
+ goto out;

err = ufshcd_make_hba_operational(hba);
if (err)
- return err;
-
+ goto out;
+out:
+ if (err)
+ ufshcd_print_info(hba, UFS_INFO_HOST_STATE |
+ UFS_INFO_HOST_REGS | UFS_INFO_PWR);
return 0;
}

@@ -494,6 +497,9 @@ static int ufs_mtk_link_set_lpm(struct ufs_hba *hba)

err = ufs_mtk_unipro_set_pm(hba, 1);
if (err) {
+ ufshcd_print_info(hba, UFS_INFO_HOST_STATE |
+ UFS_INFO_HOST_REGS | UFS_INFO_PWR);
+
/* Resume UniPro state for following error recovery */
ufs_mtk_unipro_set_pm(hba, 0);
return err;
--
2.18.0