[PATCH v6 05/14] mmc: sdhci: fix null return check of regulator_get

[Kevin Liu <keyuan.liu@gmail.com>]

From: Kevin Liu <kliu5@marvell.com>

regulator_get() returns NULL when CONFIG_REGULATOR not defined,
which should not print out the warning.

Reviewed-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Bin Wang <binw@marvell.com>
Signed-off-by: Kevin Liu <kliu5@marvell.com>
---
 drivers/mmc/host/sdhci.c |   18 ++++++++++++------
 1 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 8e6a6f0..0104ae9 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2845,9 +2845,12 @@ int sdhci_add_host(struct sdhci_host *host)
 
 	/* If vqmmc regulator and no 1.8V signalling, then there's no UHS */
 	host->vqmmc = regulator_get(mmc_dev(mmc), "vqmmc");
-	if (IS_ERR(host->vqmmc)) {
-		pr_info("%s: no vqmmc regulator found\n", mmc_hostname(mmc));
-		host->vqmmc = NULL;
+	if (IS_ERR_OR_NULL(host->vqmmc)) {
+		if (PTR_ERR(host->vqmmc) < 0) {
+			pr_info("%s: no vqmmc regulator found\n",
+				mmc_hostname(mmc));
+			host->vqmmc = NULL;
+		}
 	}
 	else if (regulator_is_supported_voltage(host->vqmmc, 1800000, 1800000))
 		regulator_enable(host->vqmmc);
@@ -2903,9 +2906,12 @@ int sdhci_add_host(struct sdhci_host *host)
 	ocr_avail = 0;
 
 	host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
-	if (IS_ERR(host->vmmc)) {
-		pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
-		host->vmmc = NULL;
+	if (IS_ERR_OR_NULL(host->vmmc)) {
+		if (PTR_ERR(host->vmmc) < 0) {
+			pr_info("%s: no vmmc regulator found\n",
+				mmc_hostname(mmc));
+			host->vmmc = NULL;
+		}
 	} else
 		regulator_enable(host->vmmc);
 
-- 
1.7.0.4