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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2010-01-20 13:49:44 -0700
committerGrant Likely <grant.likely@secretlab.ca>2010-01-20 13:49:44 -0700
commite9a172f074ba85de144e63b0786c7c5c5ba93c3a (patch)
tree71462a56fc512ecfd6ad52e09a5b9a7f145b0be9 /drivers/spi
parent34b8c66173666025020e3a6f8d4a5c238b19cde5 (diff)
downloadlinux-e9a172f074ba85de144e63b0786c7c5c5ba93c3a.tar.bz2
spi/mpc8xxx: don't check platform_get_irq's return value against zero
platform_get_irq returns -ENXIO on failure, so !irq was probably always true. Make irq a signed variable and compare irq <= 0. Note that a return value of zero is still handled as error even though this could mean irq0. This is a followup to 305b3228f9ff4d59f49e6d34a7034d44ee8ce2f0 that changed the return value of platform_get_irq from 0 to -ENXIO on error. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi_mpc8xxx.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi_mpc8xxx.c b/drivers/spi/spi_mpc8xxx.c
index 1fb2a6ea328c..08065fb15817 100644
--- a/drivers/spi/spi_mpc8xxx.c
+++ b/drivers/spi/spi_mpc8xxx.c
@@ -1328,7 +1328,7 @@ static struct of_platform_driver of_mpc8xxx_spi_driver = {
static int __devinit plat_mpc8xxx_spi_probe(struct platform_device *pdev)
{
struct resource *mem;
- unsigned int irq;
+ int irq;
struct spi_master *master;
if (!pdev->dev.platform_data)
@@ -1339,7 +1339,7 @@ static int __devinit plat_mpc8xxx_spi_probe(struct platform_device *pdev)
return -EINVAL;
irq = platform_get_irq(pdev, 0);
- if (!irq)
+ if (irq <= 0)
return -EINVAL;
master = mpc8xxx_spi_probe(&pdev->dev, mem, irq);