[PATCH 01/17] mmc: host: omap_hsmmc: use devm_regulator_get_optional() for vmmc

[Kishon Vijay Abraham I]

Since vmmc can be optional for some platforms, use
devm_regulator_get_optional() for vmmc. Now return error only
in the case of -EPROBE_DEFER and for all other cases set
host->vcc to NULL.

Signed-off-by: Kishon Vijay Abraham I <kishon at ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 4d12032..b673e59 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -344,11 +344,13 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
 	struct regulator *reg;
 	int ocr_value = 0;
 
-	reg = devm_regulator_get(host->dev, "vmmc");
+	reg = devm_regulator_get_optional(host->dev, "vmmc");
 	if (IS_ERR(reg)) {
-		dev_err(host->dev, "unable to get vmmc regulator %ld\n",
+		if (PTR_ERR(reg) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+		host->vcc = NULL;
+		dev_dbg(host->dev, "unable to get vmmc regulator %ld\n",
 			PTR_ERR(reg));
-		return PTR_ERR(reg);
 	} else {
 		host->vcc = reg;
 		ocr_value = mmc_regulator_get_ocrmask(reg);
-- 
1.7.9.5