scsi: ufs: Treat link loss as fatal error

[ Upstream commit c99b9b2301492b665b6e51ba6c06ec362eddcd10 ]

This event is raised when link is lost as specified in UFSHCI spec and that
means communication is not possible. Thus initializing UFS interface needs
to be done.

Make UFS driver considers Link Lost as fatal in the INT_FATAL_ERRORS
mask. This will trigger a host reset whenever a link lost interrupt occurs.

Link: https://lore.kernel.org/r/1642743475-54275-1-git-send-email-kwmad.kim@samsung.com
Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h
index de95be5d11d4e3d1903a722735a063acbf2cc2fe..3ed60068c4ea60b5779046d40e04a3ceebd579c4 100644 (file)
--- a/drivers/scsi/ufs/ufshci.h
+++ b/drivers/scsi/ufs/ufshci.h
@@ -142,7 +142,8 @@ static inline u32 ufshci_version(u32 major, u32 minor)
 #define INT_FATAL_ERRORS       (DEVICE_FATAL_ERROR |\
                                CONTROLLER_FATAL_ERROR |\
                                SYSTEM_BUS_FATAL_ERROR |\
-                               CRYPTO_ENGINE_FATAL_ERROR)
+                               CRYPTO_ENGINE_FATAL_ERROR |\
+                               UIC_LINK_LOST)
 
 /* HCS - Host Controller Status 30h */
 #define DEVICE_PRESENT                         0x1