From mboxrd@z Thu Jan 1 00:00:00 1970 From: frowand.list@gmail.com Subject: [PATCH 15/16] of: unittest: initialize args before calling of_irq_parse_one() Date: Thu, 4 Oct 2018 21:12:46 -0700 Message-ID: <1538712767-30394-16-git-send-email-frowand.list@gmail.com> References: <1538712767-30394-1-git-send-email-frowand.list@gmail.com> Return-path: In-Reply-To: <1538712767-30394-1-git-send-email-frowand.list@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Rob Herring , Pantelis Antoniou , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Alan Tull , Moritz Fischer , Guenter Roeck Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-fpga@vger.kernel.org List-Id: devicetree@vger.kernel.org From: Frank Rowand Callers of of_irq_parse_one() blindly use the pointer args.np without checking whether of_irq_parse_one() had an error and thus did not set the value of args.np. Initialize args to zero so that using the format "%pOF" to show the value of args.np will show "(null)" when of_irq_parse_one() has an error and does not set args.np instead of trying to dereference a random value. Reported-by: Guenter Roeck Signed-off-by: Frank Rowand --- drivers/of/unittest.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 6d80f474c8f2..b61a33f30a56 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -780,7 +780,7 @@ static void __init of_unittest_parse_interrupts(void) for (i = 0; i < 4; i++) { bool passed = true; - args.args_count = 0; + memset(&args, 0, sizeof(args)); rc = of_irq_parse_one(np, i, &args); passed &= !rc; @@ -801,7 +801,7 @@ static void __init of_unittest_parse_interrupts(void) for (i = 0; i < 4; i++) { bool passed = true; - args.args_count = 0; + memset(&args, 0, sizeof(args)); rc = of_irq_parse_one(np, i, &args); /* Test the values from tests-phandle.dtsi */ @@ -854,6 +854,7 @@ static void __init of_unittest_parse_interrupts_extended(void) for (i = 0; i < 7; i++) { bool passed = true; + memset(&args, 0, sizeof(args)); rc = of_irq_parse_one(np, i, &args); /* Test the values from tests-phandle.dtsi */ -- Frank Rowand