[PATCH v1 3/7] gpiolib: Move validate_desc() and Co upper in the code

Andy Shevchenko
2025-04-15T11:12:35Z

Move validate_desc() and Co upper in the code to be able to use
in the further changes.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/gpio/gpiolib.c | 62 +++++++++++++++++++++---------------------
1 file changed, 31 insertions(+), 31 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 8ea5ddf4704d..1fdf4d2ceb36 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -356,6 +356,37 @@ static int gpiochip_find_base_unlocked(u16 ngpio)
}
}

+/*
+ * This descriptor validation needs to be inserted verbatim into each
+ * function taking a descriptor, so we need to use a preprocessor
+ * macro to avoid endless duplication. If the desc is NULL it is an
+ * optional GPIO and calls should just bail out.
+ */
+static int validate_desc(const struct gpio_desc *desc, const char *func)
+{
+ if (!desc)
+ return 0;
+
+ if (IS_ERR(desc)) {
+ pr_warn("%s: invalid GPIO (errorpointer: %pe)\n", func, desc);
+ return PTR_ERR(desc);
+ }
+
+ return 1;
+}
+
+#define VALIDATE_DESC(desc) do { \
+ int __valid = validate_desc(desc, __func__); \
+ if (__valid <= 0) \
+ return __valid; \
+ } while (0)
+
+#define VALIDATE_DESC_VOID(desc) do { \
+ int __valid = validate_desc(desc, __func__); \
+ if (__valid <= 0) \
+ return; \
+ } while (0)
+
static int gpiochip_get_direction(struct gpio_chip *gc, unsigned int offset)
{
int ret;
@@ -2433,37 +2464,6 @@ static int gpiod_request_commit(struct gpio_desc *desc, const char *label)
return ret;
}

-/*
- * This descriptor validation needs to be inserted verbatim into each
- * function taking a descriptor, so we need to use a preprocessor
- * macro to avoid endless duplication. If the desc is NULL it is an
- * optional GPIO and calls should just bail out.
- */
-static int validate_desc(const struct gpio_desc *desc, const char *func)
-{
- if (!desc)
- return 0;
-
- if (IS_ERR(desc)) {
- pr_warn("%s: invalid GPIO (errorpointer: %pe)\n", func, desc);
- return PTR_ERR(desc);
- }
-
- return 1;
-}
-
-#define VALIDATE_DESC(desc) do { \
- int __valid = validate_desc(desc, __func__); \
- if (__valid <= 0) \
- return __valid; \
- } while (0)
-
-#define VALIDATE_DESC_VOID(desc) do { \
- int __valid = validate_desc(desc, __func__); \
- if (__valid <= 0) \
- return; \
- } while (0)
-
int gpiod_request(struct gpio_desc *desc, const char *label)
{
int ret = -EPROBE_DEFER;
--
2.47.2