From 37d5a6d6f406322ed0850fc2af1d377aced16340 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Mon, 21 Oct 2024 20:57:17 +0200 Subject: [PATCH] gpio: sysfs: demote warning messages on invalid user input to debug We should not emit a non-ratelimited warning everytime a user passes an invalid value to /sys/class/gpio/export as it's an easy way to spam the kernel log. Change the relevant messages to pr_debug_ratelimited(). Link: https://lore.kernel.org/r/20241021185717.96449-1-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski --- drivers/gpio/gpiolib-sysfs.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c index 0c713baa7784..203fc3394afe 100644 --- a/drivers/gpio/gpiolib-sysfs.c +++ b/drivers/gpio/gpiolib-sysfs.c @@ -463,7 +463,7 @@ static ssize_t export_store(const struct class *class, desc = gpio_to_desc(gpio); /* reject invalid GPIOs */ if (!desc) { - pr_warn("%s: invalid GPIO %ld\n", __func__, gpio); + pr_debug_ratelimited("%s: invalid GPIO %ld\n", __func__, gpio); return -EINVAL; } @@ -473,7 +473,7 @@ static ssize_t export_store(const struct class *class, offset = gpio_chip_hwgpio(desc); if (!gpiochip_line_is_valid(guard.gc, offset)) { - pr_warn("%s: GPIO %ld masked\n", __func__, gpio); + pr_debug_ratelimited("%s: GPIO %ld masked\n", __func__, gpio); return -EINVAL; } @@ -520,7 +520,7 @@ static ssize_t unexport_store(const struct class *class, desc = gpio_to_desc(gpio); /* reject bogus commands (gpiod_unexport() ignores them) */ if (!desc) { - pr_warn("%s: invalid GPIO %ld\n", __func__, gpio); + pr_debug_ratelimited("%s: invalid GPIO %ld\n", __func__, gpio); return -EINVAL; }