linux-kernel - [PATCH v2 5/5] gpiolib: Move error message out of a spinlock

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Message-Id: <20220408181854.73528-5-andriy.shevchenko@linux.intel.com>
Date:   Fri,  8 Apr 2022 21:18:54 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH v2 5/5] gpiolib: Move error message out of a spinlock

An error path is a slow path, no need to block other CPUs
when printing error messages.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
v2: no changes
 drivers/gpio/gpiolib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index f537597838bb..6af9cd4566fb 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -288,7 +288,6 @@ static int gpiodev_add_to_list(struct gpio_device *gdev)
 		}
 	}
 
-	dev_err(&gdev->dev, "GPIO integer space overlap, cannot add chip\n");
 	return -EBUSY;
 }
 
@@ -722,6 +721,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 	ret = gpiodev_add_to_list(gdev);
 	if (ret) {
 		spin_unlock_irqrestore(&gpio_lock, flags);
+		chip_err(gc, "GPIO integer space overlap, cannot add chip\n");
 		goto err_free_label;
 	}
 
-- 
2.35.1