From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Tobias Schandinat Date: Wed, 24 Aug 2011 13:59:03 +0000 Subject: Re: [PATCH 4/6] udlfb: Add module option to do without shadow framebuffer Message-Id: <4E5503A7.9070707@gmx.de> List-Id: References: <1313958862-5640-7-git-send-email-bernie@plugable.com> In-Reply-To: <1313958862-5640-7-git-send-email-bernie@plugable.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-fbdev@vger.kernel.org On 08/21/2011 08:34 PM, bernie@plugable.com wrote: > From: Stuart Hopkins > > By default, udlfb allocates a 2nd buffer to shadow what's across > the bus on the USB device. It can operate without this shadow, > but then it cannot tell which pixels have changed, and must send all. > > Saves host memory, but worsens the USB 2.0 bus bottleneck. > > This option allows users in very low memory situations (e.g. > bifferboard) to optionally turn off this shadow framebuffer. > > Signed-off-by: Bernie Thompson > Signed-off-by: Stuart Hopkins The order of the Signed-offs looks a bit strange here so I reordered them. I applied the ?/6 series. Thanks, Florian Tobias Schandinat