aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpio/gpiolib-of.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpio/gpiolib-of.c')
-rw-r--r--drivers/gpio/gpiolib-of.c15
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,
241 241
242 desc = of_get_named_gpiod_flags(dev->of_node, prop_name, idx, 242 desc = of_get_named_gpiod_flags(dev->of_node, prop_name, idx,
243 &of_flags); 243 &of_flags);
244 /*
245 * -EPROBE_DEFER in our case means that we found a
246 * valid GPIO property, but no controller has been
247 * registered so far.
248 *
249 * This means we don't need to look any further for
250 * alternate name conventions, and we should really
251 * preserve the return code for our user to be able to
252 * retry probing later.
253 */
254 if (IS_ERR(desc) && PTR_ERR(desc) == -EPROBE_DEFER)
255 return desc;
256
244 if (!IS_ERR(desc) || (PTR_ERR(desc) != -ENOENT)) 257 if (!IS_ERR(desc) || (PTR_ERR(desc) != -ENOENT))
245 break; 258 break;
246 } 259 }
@@ -250,7 +263,7 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
250 desc = of_find_spi_gpio(dev, con_id, &of_flags); 263 desc = of_find_spi_gpio(dev, con_id, &of_flags);
251 264
252 /* Special handling for regulator GPIOs if used */ 265 /* Special handling for regulator GPIOs if used */
253 if (IS_ERR(desc)) 266 if (IS_ERR(desc) && PTR_ERR(desc) != -EPROBE_DEFER)
254 desc = of_find_regulator_gpio(dev, con_id, &of_flags); 267 desc = of_find_regulator_gpio(dev, con_id, &of_flags);
255 268
256 if (IS_ERR(desc)) 269 if (IS_ERR(desc))