android/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

FROMLIST: scsi: ufs: add quirk to handle broken UIC command

Browse Source 
samsung ExynosAuto9 SoC has two types of host controller interface to
support the virtualization of UFS Device.
One is the physical host(PH) that the same as conventaional UFSHCI,
and the other is the virtual host(VH) that support data transfer function
only.

In this structure, the virtual host does not support UIC command.
To support this, we add the quirk and return 0 when the UIC command
send function is called.

Signed-off-by: jongmin jeong <jjmin.jeong@samsung.com>
Link: https://lore.kernel.org/linux-scsi/20210709065711.25195-2-chanho61.park@samsung.com/
Bug: 190689163
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Change-Id: Ie528726b29bcb643149440bf1c90eaa5995c5ac1
This commit is contained in:
jongmin jeong 2021-02-23 18:35:45 +09:00 committed by Todd Kjos
parent 38abaebab7
commit 2d5ae6b787
2 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/scsi/ufs/ufshcd.c
View File

@ -2323,6 +2323,9 @@ int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd)
int ret;
unsigned long flags;
if (hba->quirks & UFSHCD_QUIRK_BROKEN_UIC_CMD)
return 0;
ufshcd_hold(hba, false);
mutex_lock(&hba->uic_cmd_mutex);
ufshcd_add_delay_before_dme_cmd(hba);

6
drivers/scsi/ufs/ufshcd.h
View File

@ -565,6 +565,12 @@ enum ufshcd_quirks {
*/
UFSHCD_QUIRK_ALIGN_SG_WITH_PAGE_SIZE = 1 << 14,
/*
* This quirk needs to be enabled if the host controller does not
* support UIC command
*/
UFSHCD_QUIRK_BROKEN_UIC_CMD = 1 << 15,
/*
* This quirk needs to be enabled if the host controller supports inline
* encryption, but it needs to initialize the crypto capabilities in a