[PATCH v3 08/13] ufs: Clear UECPA once due to LINERESET has happened during LINK_STARTUP

[neil.armstrong at linaro.org]

From: Bhupesh Sharma <bhupesh.linux at gmail.com>

Clear UECPA once in u-boot UFS driver due to LINERESET has happened
during LINK_STARTUP. This makes the u-boot ufs driver behavior related
to UECPA similar to Linux UFS driver.

Ported from Linux kernel commit:
2355b66ed20c ("scsi: ufs: Handle LINERESET indication in err handler")

Signed-off-by: Bhupesh Sharma <bhupesh.sharma at linaro.org>
Tested-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu at amd.com>
---
 drivers/ufs/ufs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/ufs/ufs.c b/drivers/ufs/ufs.c
index d99dcdef7d0..565a6af1404 100644
--- a/drivers/ufs/ufs.c
+++ b/drivers/ufs/ufs.c
@@ -504,6 +504,8 @@ link_startup:
 	if (ret)
 		goto out;
 
+	/* Clear UECPA once due to LINERESET has happened during LINK_STARTUP */
+	ufshcd_readl(hba, REG_UIC_ERROR_CODE_PHY_ADAPTER_LAYER);
 	ret = ufshcd_make_hba_operational(hba);
 out:
 	if (ret)

-- 
2.34.1