From: Uwe Kleine-König Date: Thu, 19 Nov 2020 16:16:04 +0000 (+0100) Subject: spi: Warn when a driver's remove callback returns an error X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7795d4757502d8615bf092d628d424300bb31e5f;p=linux.git spi: Warn when a driver's remove callback returns an error The driver core ignores the return value of struct device_driver::remove (because in general there is nothing that can be done about that). So add a warning when an spi driver returns an error. This simplifies the quest to make struct device_driver::remove return void. A consequent change would be to make struct spi_driver::remove return void, but I'm keeping this quest for later (or someone else). Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20201119161604.2633521-3-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown --- diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 3aeb54a425a91..6ee0f66ddef10 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -408,13 +408,20 @@ static int spi_probe(struct device *dev) static int spi_remove(struct device *dev) { const struct spi_driver *sdrv = to_spi_driver(dev->driver); - int ret = 0; - if (sdrv->remove) + if (sdrv->remove) { + int ret; + ret = sdrv->remove(to_spi_device(dev)); + if (ret) + dev_warn(dev, + "Failed to unbind driver (%pe), ignoring\n", + ERR_PTR(ret)); + } + dev_pm_domain_detach(dev, true); - return ret; + return 0; } static void spi_shutdown(struct device *dev)