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[2003:c7:8f2a:8557:476b:8cfa:99ee:514e]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a8d7360f398sm418431166b.5.2024.09.12.12.11.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 12 Sep 2024 12:11:18 -0700 (PDT) Message-ID: <6141d6af-a959-41af-b612-33c8f4e16645@gmail.com> Date: Thu, 12 Sep 2024 21:11:17 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] staging: vt6655: mac.h: Fix possible precedence issue in macros To: =?UTF-8?Q?Dominik_Karol_Pi=C4=85tkowski?= , gregkh@linuxfoundation.org Cc: linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org References: <20240911180149.14474-1-dominik.karol.piatkowski@protonmail.com> Content-Language: en-US From: Philipp Hortmann In-Reply-To: <20240911180149.14474-1-dominik.karol.piatkowski@protonmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 9/11/24 20:02, Dominik Karol Piątkowski wrote: > It is safer to put macro arguments in parentheses. This way, accidental > operator precedence issues can be avoided. > > Signed-off-by: Dominik Karol Piątkowski > --- > drivers/staging/vt6655/mac.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/staging/vt6655/mac.h b/drivers/staging/vt6655/mac.h > index acf931c3f5fd..a33af2852227 100644 > --- a/drivers/staging/vt6655/mac.h > +++ b/drivers/staging/vt6655/mac.h > @@ -537,9 +537,9 @@ > > /*--------------------- Export Macros ------------------------------*/ > > -#define VT6655_MAC_SELECT_PAGE0(iobase) iowrite8(0, iobase + MAC_REG_PAGE1SEL) > +#define VT6655_MAC_SELECT_PAGE0(iobase) iowrite8(0, (iobase) + MAC_REG_PAGE1SEL) > > -#define VT6655_MAC_SELECT_PAGE1(iobase) iowrite8(1, iobase + MAC_REG_PAGE1SEL) > +#define VT6655_MAC_SELECT_PAGE1(iobase) iowrite8(1, (iobase) + MAC_REG_PAGE1SEL) > > #define MAKEWORD(lb, hb) \ > ((unsigned short)(((unsigned char)(lb)) | (((unsigned short)((unsigned char)(hb))) << 8))) Tested-by: Philipp Hortmann