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| author | Thomas Gleixner <tglx@linutronix.de> | 2018-03-14 20:23:25 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-03-14 20:23:25 +0100 |
| commit | 745dd37f9d67c75d6cf1a1bebfcca71bdeb7a34c (patch) | |
| tree | e556543ed86b7f49e4972d8ea048ff9e46592b4d /drivers/gpio/gpiolib-of.c | |
| parent | 02428742639bc3300c8c527b054d0ec0bdf5571d (diff) | |
| parent | 18a955219bf7d9008ce480d4451b6b8bf4483a22 (diff) | |
| download | linux-745dd37f9d67c75d6cf1a1bebfcca71bdeb7a34c.tar.gz linux-745dd37f9d67c75d6cf1a1bebfcca71bdeb7a34c.tar.xz | |
Merge branch 'x86/urgent' into x86/mm to pick up dependencies
Diffstat (limited to 'drivers/gpio/gpiolib-of.c')
| -rw-r--r-- | drivers/gpio/gpiolib-of.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 564bb7a31da4..84e5a9df2344 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -241,6 +241,19 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id, desc = of_get_named_gpiod_flags(dev->of_node, prop_name, idx, &of_flags); + /* + * -EPROBE_DEFER in our case means that we found a + * valid GPIO property, but no controller has been + * registered so far. + * + * This means we don't need to look any further for + * alternate name conventions, and we should really + * preserve the return code for our user to be able to + * retry probing later. + */ + if (IS_ERR(desc) && PTR_ERR(desc) == -EPROBE_DEFER) + return desc; + if (!IS_ERR(desc) || (PTR_ERR(desc) != -ENOENT)) break; } @@ -250,7 +263,7 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id, desc = of_find_spi_gpio(dev, con_id, &of_flags); /* Special handling for regulator GPIOs if used */ - if (IS_ERR(desc)) + if (IS_ERR(desc) && PTR_ERR(desc) != -EPROBE_DEFER) desc = of_find_regulator_gpio(dev, con_id, &of_flags); if (IS_ERR(desc)) |