mmc: sdhci: Don't ignore regulator_enable() return value
Fixes:
/git/arm-soc/drivers/mmc/host/sdhci.c: In function 'sdhci_add_host':
/git/arm-soc/drivers/mmc/host/sdhci.c:2910:19: warning: ignoring
return value of 'regulator_enable', declared with attribute
warn_unused_result [-Wunused-result]
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 81d5294..2ea429c 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2939,12 +2939,17 @@
host->vqmmc = NULL;
}
} else {
- regulator_enable(host->vqmmc);
+ ret = regulator_enable(host->vqmmc);
if (!regulator_is_supported_voltage(host->vqmmc, 1700000,
1950000))
caps[1] &= ~(SDHCI_SUPPORT_SDR104 |
SDHCI_SUPPORT_SDR50 |
SDHCI_SUPPORT_DDR50);
+ if (ret) {
+ pr_warn("%s: Failed to enable vqmmc regulator: %d\n",
+ mmc_hostname(mmc), ret);
+ host->vqmmc = NULL;
+ }
}
if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V)