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pinctrl: baytrail: Do not call WARN_ON for a firmware bug 

WARN_ON causes a backtrace to get logged which is only useful for
kernel bugs. For signalling a firmware bug dev_warn(dev, FW_BUG "...")
should be used.

This fixes users running userspace software to monitor kernel oopses
getting a false positive bug-report every boot because of the wrong
use of WARN_ON.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Hans de Goede 2017-07-12 14:31:01 +02:00 committed by Linus Walleij
parent 26d1f43822
commit b5894d129b
1 changed files with 2 additions and 2 deletions
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4
drivers/pinctrl/intel/pinctrl-baytrail.c
View File

@ -981,12 +981,12 @@ static int byt_gpio_request_enable(struct pinctrl_dev *pctl_dev,
*/
value = readl(reg) & BYT_PIN_MUX;
gpio_mux = byt_get_gpio_mux(vg, offset);
if (WARN_ON(gpio_mux != value)) {
if (gpio_mux != value) {
value = readl(reg) & ~BYT_PIN_MUX;
value |= gpio_mux;
writel(value, reg);
dev_warn(&vg->pdev->dev,
dev_warn(&vg->pdev->dev, FW_BUG
"pin %u forcibly re-configured as GPIO\n", offset);
}