From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Mundt Subject: Re: [PATCH] sh: ecovec: switch SDHI controllers to card polling Date: Wed, 28 Mar 2012 15:27:53 +0900 Message-ID: <20120328062753.GU26543@linux-sh.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-sh-owner@vger.kernel.org To: Guennadi Liakhovetski Cc: linux-sh@vger.kernel.org, Magnus Damm , linux-mmc@vger.kernel.org List-Id: linux-mmc@vger.kernel.org On Sat, Jan 28, 2012 at 07:36:24PM +0100, Guennadi Liakhovetski wrote: > Polling for card hotplug events is a better option than using SDHI native > hotplug interrupt, because the latter option forces the controller to stay > permanently powered up and enabled. > > Signed-off-by: Guennadi Liakhovetski > --- > > It is a kind of an RFC. We do in general prefer SDHI polling to SDHI > native hotplug detection for the above reason, but there might well be > other reasons, why this is not a good idea in this specific case. If there > are such, I'd love to hear about them. > I've not heard any more about this one way or the other, so should I assume you still want it applied? At least we can revert it if one of these cases pops up, and in the interim it's always preferable to lean towards better power management for a default. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Mundt Date: Wed, 28 Mar 2012 06:27:53 +0000 Subject: Re: [PATCH] sh: ecovec: switch SDHI controllers to card polling Message-Id: <20120328062753.GU26543@linux-sh.org> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Guennadi Liakhovetski Cc: linux-sh@vger.kernel.org, Magnus Damm , linux-mmc@vger.kernel.org On Sat, Jan 28, 2012 at 07:36:24PM +0100, Guennadi Liakhovetski wrote: > Polling for card hotplug events is a better option than using SDHI native > hotplug interrupt, because the latter option forces the controller to stay > permanently powered up and enabled. > > Signed-off-by: Guennadi Liakhovetski > --- > > It is a kind of an RFC. We do in general prefer SDHI polling to SDHI > native hotplug detection for the above reason, but there might well be > other reasons, why this is not a good idea in this specific case. If there > are such, I'd love to hear about them. > I've not heard any more about this one way or the other, so should I assume you still want it applied? At least we can revert it if one of these cases pops up, and in the interim it's always preferable to lean towards better power management for a default.