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authorLinus Torvalds <torvalds@linux-foundation.org>2021-03-19 14:07:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-03-19 14:07:19 -0700
commit3149860dc717e8dd339d89d17ebe615cb09e158b (patch)
tree7ca48b7d09ec351dc43bf9adf3f19d64da0d7634
parent6bfea141b3d26898705704efd18401d91afcbb0a (diff)
parent6cb59afe9e5b45a035bd6b97da6593743feefc72 (diff)
downloadlinux-stericsson-3149860dc717e8dd339d89d17ebe615cb09e158b.tar.gz
Merge tag 'gpio-fixes-for-v5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski: "Two fixes for the GPIO subsystem. Both address issues in the core GPIO code: - fix the return value in error path in gpiolib_dev_init() - fix the 'gpio-line-names' property handling correctly this time" * tag 'gpio-fixes-for-v5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: gpiolib: Assign fwnode to parent's if no primary one provided gpiolib: Fix error return code in gpiolib_dev_init()
-rw-r--r--drivers/gpio/gpiolib.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 7ec0822c0505..6367646dce83 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -571,6 +571,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
struct lock_class_key *lock_key,
struct lock_class_key *request_key)
{
+ struct fwnode_handle *fwnode = gc->parent ? dev_fwnode(gc->parent) : NULL;
unsigned long flags;
int ret = 0;
unsigned i;
@@ -594,6 +595,12 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
of_gpio_dev_init(gc, gdev);
+ /*
+ * Assign fwnode depending on the result of the previous calls,
+ * if none of them succeed, assign it to the parent's one.
+ */
+ gdev->dev.fwnode = dev_fwnode(&gdev->dev) ?: fwnode;
+
gdev->id = ida_alloc(&gpio_ida, GFP_KERNEL);
if (gdev->id < 0) {
ret = gdev->id;
@@ -4256,7 +4263,8 @@ static int __init gpiolib_dev_init(void)
return ret;
}
- if (driver_register(&gpio_stub_drv) < 0) {
+ ret = driver_register(&gpio_stub_drv);
+ if (ret < 0) {
pr_err("gpiolib: could not register GPIO stub driver\n");
bus_unregister(&gpio_bus_type);
return ret;