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 { ...@@ -29,15 +29,18 @@ struct mmc_pwrseq_simple {
static void mmc_pwrseq_simple_set_gpios_value(struct mmc_pwrseq_simple *pwrseq, static void mmc_pwrseq_simple_set_gpios_value(struct mmc_pwrseq_simple *pwrseq,
int value) int value)
{ {
int i;
struct gpio_descs *reset_gpios = pwrseq->reset_gpios; struct gpio_descs *reset_gpios = pwrseq->reset_gpios;
if (!IS_ERR(reset_gpios)) {
int i;
int values[reset_gpios->ndescs]; int values[reset_gpios->ndescs];
for (i = 0; i < reset_gpios->ndescs; i++) for (i = 0; i < reset_gpios->ndescs; i++)
values[i] = value; values[i] = value;
gpiod_set_array_value_cansleep(reset_gpios->ndescs, reset_gpios->desc, gpiod_set_array_value_cansleep(
values); reset_gpios->ndescs, reset_gpios->desc, values);
}
} }
static void mmc_pwrseq_simple_pre_power_on(struct mmc_host *host) 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) ...@@ -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 = container_of(host->pwrseq,
struct mmc_pwrseq_simple, pwrseq); struct mmc_pwrseq_simple, pwrseq);
if (!IS_ERR(pwrseq->reset_gpios))
gpiod_put_array(pwrseq->reset_gpios); gpiod_put_array(pwrseq->reset_gpios);
if (!IS_ERR(pwrseq->ext_clk)) if (!IS_ERR(pwrseq->ext_clk))
...@@ -112,7 +116,9 @@ struct mmc_pwrseq *mmc_pwrseq_simple_alloc(struct mmc_host *host, ...@@ -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); 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); ret = PTR_ERR(pwrseq->reset_gpios);
goto clk_put; goto clk_put;
} }
......
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