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authorLinus Torvalds <torvalds@linux-foundation.org>2022-07-17 07:58:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-07-17 07:58:19 -0700
commit2eccaca7b62b2836260c6fb22156a44e3d99a74a (patch)
treea04a48f802ba09cc47a6a0862ac313213634033b
parent8ad4b6fa0f874ec8ec6e92a90116e3ab43cded6c (diff)
parent7329b071729645e243b6207e76bca2f4951c991b (diff)
downloadlinux-2eccaca7b62b2836260c6fb22156a44e3d99a74a.tar.gz
Merge tag 'gpio-fixes-for-v5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fix from Bartosz Golaszewski:

 - fix a configfs attribute of the gpio-sim module

* tag 'gpio-fixes-for-v5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: sim: fix the chip_name configfs item
-rw-r--r--drivers/gpio/gpio-sim.c16
1 files changed, 5 insertions, 11 deletions
diff --git a/drivers/gpio/gpio-sim.c b/drivers/gpio/gpio-sim.c
index 98109839102f..1020c2feb249 100644
--- a/drivers/gpio/gpio-sim.c
+++ b/drivers/gpio/gpio-sim.c
@@ -991,28 +991,22 @@ static struct configfs_attribute *gpio_sim_device_config_attrs[] = {
 };
 
 struct gpio_sim_chip_name_ctx {
-	struct gpio_sim_device *dev;
+	struct fwnode_handle *swnode;
 	char *page;
 };
 
 static int gpio_sim_emit_chip_name(struct device *dev, void *data)
 {
 	struct gpio_sim_chip_name_ctx *ctx = data;
-	struct fwnode_handle *swnode;
-	struct gpio_sim_bank *bank;
 
 	/* This would be the sysfs device exported in /sys/class/gpio. */
 	if (dev->class)
 		return 0;
 
-	swnode = dev_fwnode(dev);
+	if (device_match_fwnode(dev, ctx->swnode))
+		return sprintf(ctx->page, "%s\n", dev_name(dev));
 
-	list_for_each_entry(bank, &ctx->dev->bank_list, siblings) {
-		if (bank->swnode == swnode)
-			return sprintf(ctx->page, "%s\n", dev_name(dev));
-	}
-
-	return -ENODATA;
+	return 0;
 }
 
 static ssize_t gpio_sim_bank_config_chip_name_show(struct config_item *item,
@@ -1020,7 +1014,7 @@ static ssize_t gpio_sim_bank_config_chip_name_show(struct config_item *item,
 {
 	struct gpio_sim_bank *bank = to_gpio_sim_bank(item);
 	struct gpio_sim_device *dev = gpio_sim_bank_get_device(bank);
-	struct gpio_sim_chip_name_ctx ctx = { dev, page };
+	struct gpio_sim_chip_name_ctx ctx = { bank->swnode, page };
 	int ret;
 
 	mutex_lock(&dev->lock);