Commit 64a67d47 authored by Martin Fuzzey's avatar Martin Fuzzey Committed by Ulf Hansson

mmc: pwrseq_simple: Make reset-gpios optional to match doc

The DT binding doc says reset-gpios is an optional property but the code
currently bails out if it is omitted.

This is a regression since it breaks previously working device trees.
Fix it by restoring the original documented behaviour.

Fixes: ce037275 ("mmc: pwrseq_simple: use GPIO descriptors array API")
Tested-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarMartin Fuzzey <mfuzzey@parkeon.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 07cbeea5
......@@ -29,15 +29,18 @@ struct mmc_pwrseq_simple {
static void mmc_pwrseq_simple_set_gpios_value(struct mmc_pwrseq_simple *pwrseq,
int value)
{
int i;
struct gpio_descs *reset_gpios = pwrseq->reset_gpios;
if (!IS_ERR(reset_gpios)) {
int i;
int values[reset_gpios->ndescs];
for (i = 0; i < reset_gpios->ndescs; i++)
values[i] = value;
gpiod_set_array_value_cansleep(reset_gpios->ndescs, reset_gpios->desc,
values);
gpiod_set_array_value_cansleep(
reset_gpios->ndescs, reset_gpios->desc, values);
}
}
static void mmc_pwrseq_simple_pre_power_on(struct mmc_host *host)
......@@ -79,6 +82,7 @@ static void mmc_pwrseq_simple_free(struct mmc_host *host)
struct mmc_pwrseq_simple *pwrseq = container_of(host->pwrseq,
struct mmc_pwrseq_simple, pwrseq);
if (!IS_ERR(pwrseq->reset_gpios))
gpiod_put_array(pwrseq->reset_gpios);
if (!IS_ERR(pwrseq->ext_clk))
......@@ -112,7 +116,9 @@ struct mmc_pwrseq *mmc_pwrseq_simple_alloc(struct mmc_host *host,
}
pwrseq->reset_gpios = gpiod_get_array(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(pwrseq->reset_gpios)) {
if (IS_ERR(pwrseq->reset_gpios) &&
PTR_ERR(pwrseq->reset_gpios) != -ENOENT &&
PTR_ERR(pwrseq->reset_gpios) != -ENOSYS) {
ret = PTR_ERR(pwrseq->reset_gpios);
goto clk_put;
}
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment