Messages in this thread | | | Date | Thu, 21 Aug 2014 09:26:54 +0200 | Subject | Re: [PATCH] mmc:sdhci: handle busy-end interrupt during command | From | Ulf Hansson <> |
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On 21 August 2014 03:53, Chanho Min <chanho.min@lge.com> wrote: > It is fully legal for a controller to start handling busy-end interrupt > before it has signaled that the command has completed. So make sure > we do things in the proper order, Or it results that command interrupt > is ignored so it can cause unexpected operations. This is founded at some > toshiba emmc with the bellow warning. > > "mmc0: Got command interrupt 0x00000001 even though > no command operation was in progress." > > This issue has been also reported by Youssef TRIKI: > It is not specific to Toshiba devices, and happens with eMMC devices > as well as SD card which support Auto-CMD12 rather than CMD23. > > Also, similar patch is submitted by: > Gwendal Grignou <gwendal@chromium.org> > > Signed-off-by: Hankyung Yu <hankyung.yu@lge.com> > Signed-off-by: Chanho Min <chanho.min@lge.com> > Tested-by: Youssef TRIKI <youssef.triki@st.com>
Hi Chanho,
This patch has been around for quite some time, sorry for lack of response. Appreciate if we could get this tested on a few more variants of sdhci, I am not able to test myself.
I plan to queue this for 3.18, unless someone objects soon.
Kind regards Uffe
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