From 7d607f917008218564ae44ca3ef47076a9b36e8f Mon Sep 17 00:00:00 2001
From: Kishon Vijay Abraham I <kishon@ti.com>
Date: Thu, 27 Aug 2015 14:43:53 +0530
Subject: [PATCH] mmc: host: omap_hsmmc: use devm_regulator_get_optional() for
vmmc
Since vmmc can be optional for some platforms, use
devm_regulator_get_optional() for vmmc. Now return error only
if the return value of devm_regulator_get_optional() is not the
same as -ENODEV, since with -EPROBE_DEFER, the regulator can be
obtained later and all other errors are fatal.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---
drivers/mmc/host/omap_hsmmc.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 19ae7e693526..9b335aff5882 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -345,15 +345,19 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
{
struct regulator *reg;
int ocr_value = 0;
+ int ret;
if (mmc_pdata(host)->set_power)
return 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",
+ ret = PTR_ERR(reg);
+ if (ret != -ENODEV)
+ return ret;
+ 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);
--
2.34.1