From: Can Guo Date: Mon, 26 Apr 2021 03:48:38 +0000 (-0700) Subject: scsi: ufs: core: Do not put UFS power into LPM if link is broken X-Git-Tag: v5.11.22~156 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd7e06d6d711bd22292d1caab1880e2636f67772;p=thirdparty%2Fkernel%2Fstable.git scsi: ufs: core: Do not put UFS power into LPM if link is broken [ Upstream commit 23043dd87b153d02eaf676e752d32429be5e5126 ] During resume, if link is broken due to AH8 failure, make sure ufshcd_resume() does not put UFS power back into LPM. Link: https://lore.kernel.org/r/1619408921-30426-2-git-send-email-cang@codeaurora.org Fixes: 4db7a2360597 ("scsi: ufs: Fix concurrency of error handler and other error recovery paths") Reviewed-by: Daejun Park Signed-off-by: Can Guo Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index e53a3f89e8635..9f811fc5916d0 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -8577,7 +8577,7 @@ static void ufshcd_vreg_set_lpm(struct ufs_hba *hba) } else if (!ufshcd_is_ufs_dev_active(hba)) { ufshcd_toggle_vreg(hba->dev, hba->vreg_info.vcc, false); vcc_off = true; - if (!ufshcd_is_link_active(hba)) { + if (ufshcd_is_link_hibern8(hba) || ufshcd_is_link_off(hba)) { ufshcd_config_vreg_lpm(hba, hba->vreg_info.vccq); ufshcd_config_vreg_lpm(hba, hba->vreg_info.vccq2); } @@ -8599,7 +8599,7 @@ static int ufshcd_vreg_set_hpm(struct ufs_hba *hba) !hba->dev_info.is_lu_power_on_wp) { ret = ufshcd_setup_vreg(hba, true); } else if (!ufshcd_is_ufs_dev_active(hba)) { - if (!ret && !ufshcd_is_link_active(hba)) { + if (!ufshcd_is_link_active(hba)) { ret = ufshcd_config_vreg_hpm(hba, hba->vreg_info.vccq); if (ret) goto vcc_disable;