Commit 47398f49 authored by Eric Biggers's avatar Eric Biggers Committed by Martin K. Petersen
Browse files

scsi: ufs: exynos: Don't resume FMP when crypto support is disabled 



If exynos_ufs_fmp_init() did not enable FMP support, then
exynos_ufs_fmp_resume() should not execute the FMP-related SMC calls.

Fixes: c96499fc ("scsi: ufs: exynos: Add support for Flash Memory Protector (FMP)")
Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20240721183840.209284-1-ebiggers@kernel.org


Reviewed-by: default avatarBart Van Assche <bvanassche@acm.org>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 82dbb57a

drivers/ufs/host/ufs-exynos.c

+3 −0
Original line number Diff line number Diff line
@@ -1293,6 +1293,9 @@ static void exynos_ufs_fmp_resume(struct ufs_hba *hba) 
{

	struct arm_smccc_res res;



	if (!(hba->caps & UFSHCD_CAP_CRYPTO))

		return;



	arm_smccc_smc(SMC_CMD_FMP_SECURITY, 0, SMU_EMBEDDED, CFG_DESCTYPE_3,

		      0, 0, 0, 0, &res);

	if (res.a0)