From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Welling Subject: [PATCH 4/4] spi: omap2-mcspi: Handle error on gpio_request Date: Sat, 23 May 2015 21:13:45 -0500 Message-ID: <1432433625-23407-5-git-send-email-mwelling@ieee.org> References: <20150522122544.GL21391@sirena.org.uk> <1432433625-23407-1-git-send-email-mwelling@ieee.org> Cc: Michael Welling To: broonie@kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-next@vger.kernel.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: In-Reply-To: <1432433625-23407-1-git-send-email-mwelling@ieee.org> Sender: linux-next-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org If a valid GPIO is specified but cannot be requested by the driver, print a message and error out of omap2_mcspi_setup. Signed-off-by: Michael Welling --- drivers/spi/spi-omap2-mcspi.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index c4e21ad..5867384 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -1023,9 +1023,12 @@ static int omap2_mcspi_setup(struct spi_device *spi) } if (gpio_is_valid(spi->cs_gpio)) { - if (gpio_request(spi->cs_gpio, dev_name(&spi->dev)) == 0) - gpio_direction_output(spi->cs_gpio, - !(spi->mode & SPI_CS_HIGH)); + ret = gpio_request(spi->cs_gpio, dev_name(&spi->dev)); + if (ret) { + dev_err(&spi->dev, "failed to request gpio\n"); + return ret; + } + gpio_direction_output(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH)); } ret = pm_runtime_get_sync(mcspi->dev); -- 1.7.9.5