scsi: ufs: Add quirk to handle broken UIC command
authorjongmin jeong <jjmin.jeong@samsung.com>
Mon, 18 Oct 2021 12:42:02 +0000 (21:42 +0900)
committerMartin K. Petersen <martin.petersen@oracle.com>
Thu, 28 Oct 2021 03:10:10 +0000 (23:10 -0400)
commita22bcfdbf10b4182e94ae98a641efa676170feaf
tree19464bc8c3aa54d9e361e81ba4c88a94c7899b12
parent3a71f0f7a51259b3cb95d79cac1e19dcc5e89ce9
scsi: ufs: Add quirk to handle broken UIC command

Samsung ExynosAuto v9 SoC has two types of host controller interface to
support the virtualization of UFS Device.  One is the physical host (PH)
that is the same as conventional UFSHCI, and the other is the virtual host
(VH) that supports data transfer function only.

In this configuration the virtual host does not support UIC commands. Add a
quirk to return 0 when the UIC command send function is called.

Link: https://lore.kernel.org/r/20211018124216.153072-2-chanho61.park@samsung.com
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: James E.J. Bottomley <jejb@linux.ibm.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: jongmin jeong <jjmin.jeong@samsung.com>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/ufs/ufshcd.c
drivers/scsi/ufs/ufshcd.h