From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King - ARM Linux Date: Mon, 21 Mar 2011 16:41:56 +0000 Subject: Re: [PATCH 07/20] video: msm: Allow users to request a larger x Message-Id: <20110321164156.GF4340@n2100.arm.linux.org.uk> List-Id: References: <1300484846-26393-1-git-send-email-carlv@codeaurora.org> <1300485381-27201-1-git-send-email-carlv@codeaurora.org> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org On Mon, Mar 21, 2011 at 10:10:09AM +0530, Janorkar, Mayuresh wrote: > > + fix->line_length = var->xres * var->bits_per_pixel / 8; > Why to divide by 8? Atleast use >>3, bitwise operations that would take > less cpu cycles) > As I stated earlier define a new macro for var also. Modern compilers know about such things. >> 3 vs / 8 (probably) makes no difference to the generated code with the toolchains we use.