From mboxrd@z Thu Jan 1 00:00:00 1970 From: dmitry.torokhov@gmail.com (Dmitry Torokhov) Date: Fri, 17 Nov 2017 11:56:59 -0800 Subject: [PATCH 08/10] Input: twl4030-pwrbutton: Handle return value of platform_get_irq In-Reply-To: <1510946132-13554-9-git-send-email-arvind.yadav.cs@gmail.com> References: <1510946132-13554-1-git-send-email-arvind.yadav.cs@gmail.com> <1510946132-13554-9-git-send-email-arvind.yadav.cs@gmail.com> Message-ID: <20171117195659.jb6765dnzobvvlrg@dtor-ws> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Sat, Nov 18, 2017 at 12:45:30AM +0530, Arvind Yadav wrote: > platform_get_irq() can fail here and we must check its return value. > > Signed-off-by: Arvind Yadav > --- > drivers/input/misc/twl4030-pwrbutton.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/input/misc/twl4030-pwrbutton.c b/drivers/input/misc/twl4030-pwrbutton.c > index b307cca..0dcf311 100644 > --- a/drivers/input/misc/twl4030-pwrbutton.c > +++ b/drivers/input/misc/twl4030-pwrbutton.c > @@ -58,6 +58,9 @@ static int twl4030_pwrbutton_probe(struct platform_device *pdev) > int irq = platform_get_irq(pdev, 0); > int err; > > + if (irq < 0) > + return -ENOMEM; Why on earth it would translate to ENOMEM? Also, if we do the check I'd prefer to keep assignment and the check together. > + > pwr = devm_input_allocate_device(&pdev->dev); > if (!pwr) { > dev_err(&pdev->dev, "Can't allocate power button\n"); > -- > 2.7.4 > -- Dmitry