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authorLars-Peter Clausen <lars@metafoo.de>2016-07-15 12:04:18 +0300
committerMark Brown <broonie@kernel.org>2016-07-15 13:44:59 +0300
commit4db9bf548bb00d84ba7dfd70f124de16386c0c55 (patch)
tree01730038753a3dbdf5ccaaaf55159b543bb2a0dd /drivers/spi/spi-xilinx.c
parent1a695a905c18548062509178b98bc91e67510864 (diff)
downloadlinux-4db9bf548bb00d84ba7dfd70f124de16386c0c55.tar.xz
spi: xilinx: Handle errors from platform_get_irq()
The Xilinx SPI driver can operate without an IRQ, but not every error returned by platform_get_irq() means that no IRQ was specified. It will also return an error if the IRQ specification is invalid or the IRQ provider is not yet available (EPROBE_DEFER). So instead of ignoring all errors only ignore ENXIO, which means no IRQ was specified, and propagate all other errors to device driver core. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-xilinx.c')
-rw-r--r--drivers/spi/spi-xilinx.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index 3009121173cd..e62eb9ace825 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -455,7 +455,10 @@ static int xilinx_spi_probe(struct platform_device *pdev)
xspi->buffer_size = xilinx_spi_find_buffer_size(xspi);
xspi->irq = platform_get_irq(pdev, 0);
- if (xspi->irq >= 0) {
+ if (xspi->irq < 0 && xspi->irq != -ENXIO) {
+ ret = xspi->irq;
+ goto put_master;
+ } else if (xspi->irq >= 0) {
/* Register for SPI Interrupt */
ret = devm_request_irq(&pdev->dev, xspi->irq, xilinx_spi_irq, 0,
dev_name(&pdev->dev), xspi);