Messages in this thread Patch in this message | | | From | Andrzej Hajda <> | Subject | [PATCH 03/19] libata: samsung_cf: fix handling platform_get_irq result | Date | Thu, 24 Sep 2015 16:00:11 +0200 |
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The function can return negative value.
The problem has been detected using proposed semantic patch scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].
[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> --- Hi,
To avoid problems with too many mail recipients I have sent whole patchset only to LKML. Anyway patches have no dependencies.
Regards Andrzej --- drivers/ata/pata_samsung_cf.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/ata/pata_samsung_cf.c b/drivers/ata/pata_samsung_cf.c index cbb5a47..e028763 100644 --- a/drivers/ata/pata_samsung_cf.c +++ b/drivers/ata/pata_samsung_cf.c @@ -510,8 +510,6 @@ static int __init pata_s3c_probe(struct platform_device *pdev) return -ENOMEM; } - info->irq = platform_get_irq(pdev, 0); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); info->ide_addr = devm_ioremap_resource(dev, res); @@ -551,9 +549,10 @@ static int __init pata_s3c_probe(struct platform_device *pdev) info->cpu_type = cpu_type; + ret = platform_get_irq(pdev, 0); + info->irq = ret > 0 ? ret : 0; if (info->irq <= 0) { ap->flags |= ATA_FLAG_PIO_POLLING; - info->irq = 0; ata_port_desc(ap, "no IRQ, using PIO polling\n"); } -- 1.9.1
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