Hi, On Tue, Mar 14, 2017 at 9:22 AM, Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote: > On 1 March 2017 at 23:11, Guenter Roeck <linux@xxxxxxxxxxxx> wrote: >> HS400-ES devices fail to initialize with the following error messages. >> >> mmc1: power class selection to bus width 8 ddr 0 failed >> mmc1: error -110 whilst initialising MMC card >> >> This was seen on Samsung Chromebook Plus. Code analysis points to >> commit 3d4ef329757c ("mmc: core: fix multi-bit bus width without >> high-speed mode"), which attempts to set the bus width for all but >> HS200 devices unconditionally. However, for HS400-ES, the bus width >> is already selected. >> >> Cc: Anssi Hannula <anssi.hannula@xxxxxxxxxx> >> Cc: Douglas Anderson <dianders@xxxxxxxxxxxx> >> Cc: Brian Norris <briannorris@xxxxxxxxxxxx> >> Fixes: 3d4ef329757c ("mmc: core: fix multi-bit bus width ...") >> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> > > Sorry for the delay. Been traveling. > > Applied for fixes, thanks! +stable The commit 3d4ef329757c ("mmc: core: fix multi-bit bus width without high-speed mode") got backported to many stable branches, so probably this commit 773dc118756b ("mmc: core: Fix access to HS400-ES devices") also needs to get picked to the same stable branches. In the very least v4.9 and v4.4 stable includes the broken patch but not this fix. -Doug