From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrzej Hajda Subject: [PATCH 02/19] spi: davinci: fix handling platform_get_irq result Date: Thu, 24 Sep 2015 16:00:10 +0200 Message-ID: <1443103227-25612-3-git-send-email-a.hajda@samsung.com> References: <1443103227-25612-1-git-send-email-a.hajda@samsung.com> Cc: Andrzej Hajda , Bartlomiej Zolnierkiewicz , Marek Szyprowski , Mark Brown , linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Return-path: In-reply-to: <1443103227-25612-1-git-send-email-a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: 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 --- 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/spi/spi-davinci.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c index 3cf9faa..a85d863 100644 --- a/drivers/spi/spi-davinci.c +++ b/drivers/spi/spi-davinci.c @@ -992,11 +992,12 @@ static int davinci_spi_probe(struct platform_device *pdev) goto free_master; } - dspi->irq = platform_get_irq(pdev, 0); - if (dspi->irq <= 0) { + ret = platform_get_irq(pdev, 0); + if (ret == 0) ret = -EINVAL; + if (ret < 0) goto free_master; - } + dspi->irq = ret; ret = devm_request_threaded_irq(&pdev->dev, dspi->irq, davinci_spi_irq, dummy_thread_fn, 0, dev_name(&pdev->dev), dspi); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html