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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2010-01-20 20:49:44 (GMT) |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-01-20 20:49:44 (GMT) |
| commit | e9a172f074ba85de144e63b0786c7c5c5ba93c3a (patch) | |
| tree | 71462a56fc512ecfd6ad52e09a5b9a7f145b0be9 /drivers | |
| parent | 34b8c66173666025020e3a6f8d4a5c238b19cde5 (diff) | |
| download | linux-e9a172f074ba85de144e63b0786c7c5c5ba93c3a.tar.xz | |
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')
| -rw-r--r-- | drivers/spi/spi_mpc8xxx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi_mpc8xxx.c b/drivers/spi/spi_mpc8xxx.c index 1fb2a6e..08065fb 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); |