From 23e7c6a765df64cafebff2d50fc51345797ca99a Mon Sep 17 00:00:00 2001 From: Emil Goode Date: Sat, 18 Aug 2012 18:12:48 +0200 Subject: [PATCH] tty: serial: max310x: Check return code of gpiochip_remove MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The gpiochip_remove function may fail to remove a gpio_chip if any GPIOs are still requested. This patch informs the caller of such a senario. Sparse is warning because the function prototype has a __must_check annotation. Sparse warning: drivers/tty/serial/max310x.c:1223:18: warning: ignoring return value of ‘gpiochip_remove’, declared with attribute warn_unused_result [-Wunused-result] Signed-off-by: Emil Goode Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/max310x.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c index 534e44851b7f..06ff5ad75636 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -1207,6 +1207,7 @@ static int __devexit max310x_remove(struct spi_device *spi) { struct device *dev = &spi->dev; struct max310x_port *s = dev_get_drvdata(dev); + int ret = 0; dev_dbg(dev, "Removing port\n"); @@ -1219,8 +1220,11 @@ static int __devexit max310x_remove(struct spi_device *spi) uart_unregister_driver(&s->uart); #ifdef CONFIG_GPIOLIB - if (s->pdata->gpio_base) - gpiochip_remove(&s->gpio); + if (s->pdata->gpio_base) { + ret = gpiochip_remove(&s->gpio); + if (ret) + dev_err(dev, "Failed to remove gpio chip: %d\n", ret); + } #endif dev_set_drvdata(dev, NULL); @@ -1232,7 +1236,7 @@ static int __devexit max310x_remove(struct spi_device *spi) devm_kfree(dev, s); - return 0; + return ret; } static const struct spi_device_id max310x_id_table[] = { -- 2.39.5