Messages in this thread | | | Date | Mon, 22 Dec 2014 10:58:23 +0100 | Subject | Re: [PATCH] mmc: core: stop trying to switch width when only one bit is supported | From | Ulf Hansson <> |
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On 17 December 2014 at 19:32, Alexandre Belloni <alexandre.belloni@free-electrons.com> wrote: > mmc_select_bus_width() will try to switch to MMC_BUS_WIDTH_4 even if > MMC_CAP_4_BIT_DATA and MMC_CAP_8_BIT_DATA are not set in host->caps. > Return as soon as possible when those flags are not set > > Fixes: 577fb13199b11d8cd75609183649be4b5561243f (mmc: rework > selection of bus speed mode) > > Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> > Cc: <stable@vger.kernel.org> # 3.17
Thanks! Applied for fixes.
Kind regards Uffe
> --- > drivers/mmc/core/mmc.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c > index 02ad79229f65..7466ce098e60 100644 > --- a/drivers/mmc/core/mmc.c > +++ b/drivers/mmc/core/mmc.c > @@ -886,7 +886,7 @@ static int mmc_select_bus_width(struct mmc_card *card) > unsigned idx, bus_width = 0; > int err = 0; > > - if (!mmc_can_ext_csd(card) && > + if (!mmc_can_ext_csd(card) || > !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) > return 0; > > -- > 2.1.0 >
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