Remove checking the mediatek,ufs-support-va09 property to decide whether to try to support the VA09 regulator handling and change the ufs_mtk_init_va09_pwr_ctrl() function to make it call devm_regulator_get_optional(): if the regulator is present, then we set the UFS_MTK_CAP_VA09_PWR_CTRL, effectively enabling the handling of the VA09 regulator based on that. Also, make sure to pass the return value of the call to devm_regulator_get_optional() to the probe function, so that if it returns a probe deferral, the appropriate action will be taken. While at it, remove the error print (disguised as info...) when the va09 regulator was not found. Fixes: ac8c2459091c ("scsi: ufs-mediatek: Decouple features from platform bindings") Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> --- drivers/ufs/host/ufs-mediatek.c | 34 +++++++++++++++++++++++---------- 1 file changed, 24 insertions(+), 10 deletions(-) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index c7a0ab9b1f59..47c7d34b9be9 100644 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -623,27 +623,38 @@ static void ufs_mtk_init_boost_crypt(struct ufs_hba *hba) return; } -static void ufs_mtk_init_va09_pwr_ctrl(struct ufs_hba *hba) +static int ufs_mtk_init_va09_pwr_ctrl(struct ufs_hba *hba) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); + int ret; - host->reg_va09 = regulator_get(hba->dev, "va09"); - if (IS_ERR(host->reg_va09)) - dev_info(hba->dev, "failed to get va09"); - else - host->caps |= UFS_MTK_CAP_VA09_PWR_CTRL; + host->reg_va09 = devm_regulator_get_optional(hba->dev, "va09"); + if (IS_ERR(host->reg_va09)) { + ret = PTR_ERR(host->reg_va09); + + /* Return an error only if this is a deferral */ + if (ret == -EPROBE_DEFER) + return ret; + + return 0; + } + + host->caps |= UFS_MTK_CAP_VA09_PWR_CTRL; + return 0; } -static void ufs_mtk_init_host_caps(struct ufs_hba *hba) +static int ufs_mtk_init_host_caps(struct ufs_hba *hba) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); struct device_node *np = hba->dev->of_node; + int ret; if (of_property_read_bool(np, "mediatek,ufs-boost-crypt")) ufs_mtk_init_boost_crypt(hba); - if (of_property_read_bool(np, "mediatek,ufs-support-va09")) - ufs_mtk_init_va09_pwr_ctrl(hba); + ret = ufs_mtk_init_va09_pwr_ctrl(hba); + if (ret) + return ret; if (of_property_read_bool(np, "mediatek,ufs-disable-ah8")) host->caps |= UFS_MTK_CAP_DISABLE_AH8; @@ -664,6 +675,7 @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba) host->caps |= UFS_MTK_CAP_RTFF_MTCMOS; dev_info(hba->dev, "caps: 0x%x", host->caps); + return 0; } static void ufs_mtk_scale_perf(struct ufs_hba *hba, bool scale_up) @@ -986,7 +998,9 @@ static int ufs_mtk_init(struct ufs_hba *hba) } /* Initialize host capability */ - ufs_mtk_init_host_caps(hba); + err = ufs_mtk_init_host_caps(hba); + if (err) + goto out; ufs_mtk_init_mcq_irq(hba); -- 2.45.2