提交 f2f942ce 编写于 作者: S Sachin Kamat 提交者: Chris Ball

mmc: dw_mmc: Check return value of regulator_enable

regulator_enable() is declared with __must_check attribute.
Hence check the return value to ensure that the regulator is enabled.

Fixes the following warning:

drivers/mmc/host/dw_mmc.c:2461:19: warning:
ignoring return value of ‘regulator_enable’, declared with attribute
warn_unused_result [-Wunused-result]
drivers/mmc/host/dw_mmc.c: In function ‘dw_mci_init_slot’:
drivers/mmc/host/dw_mmc.c:1994:19: warning:
ignoring return value of ‘regulator_enable’, declared with attribute
warn_unused_result [-Wunused-result]
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NJaehoon Chung <jh80.chung@samsung.com>
Acked-by: NSeungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>
上级 b0dd099c
......@@ -1997,8 +1997,14 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
if (IS_ERR(host->vmmc)) {
pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
host->vmmc = NULL;
} else
regulator_enable(host->vmmc);
} else {
ret = regulator_enable(host->vmmc);
if (ret) {
dev_err(host->dev,
"failed to enable regulator: %d\n", ret);
goto err_setup_bus;
}
}
if (dw_mci_get_cd(mmc))
set_bit(DW_MMC_CARD_PRESENT, &slot->flags);
......@@ -2464,8 +2470,14 @@ int dw_mci_resume(struct dw_mci *host)
{
int i, ret;
if (host->vmmc)
regulator_enable(host->vmmc);
if (host->vmmc) {
ret = regulator_enable(host->vmmc);
if (ret) {
dev_err(host->dev,
"failed to enable regulator: %d\n", ret);
return ret;
}
}
if (!mci_wait_reset(host->dev, host)) {
ret = -ENODEV;
......
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