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[v3,04/14] scsi: ufs: exynos: add check inside exynos_ufs_config_smu()

Message ID 20241031150033.3440894-5-peter.griffin@linaro.org
State New
Headers show
Series UFS cleanups and enhancements to ufs-exynos for gs101 | expand

Commit Message

Peter Griffin Oct. 31, 2024, 3 p.m. UTC 
Move the EXYNOS_UFS_OPT_UFSPR_SECURE check inside exynos_ufs_config_smu().

This way all call sites will benefit from the check. This fixes a bug
currently in the exynos_ufs_resume() path on gs101 as it calls
exynos_ufs_config_smu() and we end up accessing registers that can only
be accessed from secure world which results in a serror.

Fixes: d11e0a318df8 ("scsi: ufs: exynos: Add support for Tensor gs101 SoC")
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Cc: stable@vger.kernel.org
---
v3: CC stable and be more verbose in commit message (Tudor)
---
 drivers/ufs/host/ufs-exynos.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
index 33de7ff747a2..f4454e89040f 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -719,6 +719,9 @@  static void exynos_ufs_config_smu(struct exynos_ufs *ufs)
 {
 	u32 reg, val;
 
+	if (ufs->opts & EXYNOS_UFS_OPT_UFSPR_SECURE)
+		return;
+
 	exynos_ufs_disable_auto_ctrl_hcc_save(ufs, &val);
 
 	/* make encryption disabled by default */
@@ -1454,8 +1457,8 @@  static int exynos_ufs_init(struct ufs_hba *hba)
 	if (ret)
 		goto out;
 	exynos_ufs_specify_phy_time_attr(ufs);
-	if (!(ufs->opts & EXYNOS_UFS_OPT_UFSPR_SECURE))
-		exynos_ufs_config_smu(ufs);
+
+	exynos_ufs_config_smu(ufs);
 
 	hba->host->dma_alignment = DATA_UNIT_SIZE - 1;
 	return 0;