On 13 March 2017 at 13:36, Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote: > Add helper functions to enable or disable the Command Queue. > > Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx> > --- > Documentation/mmc/mmc-dev-attrs.txt | 1 + > drivers/mmc/core/mmc.c | 2 ++ > drivers/mmc/core/mmc_ops.c | 28 ++++++++++++++++++++++++++++ > drivers/mmc/core/mmc_ops.h | 2 ++ > include/linux/mmc/card.h | 1 + > 5 files changed, 34 insertions(+) > > diff --git a/Documentation/mmc/mmc-dev-attrs.txt b/Documentation/mmc/mmc-dev-attrs.txt > index 404a0e9e92b0..dcd1252877fb 100644 > --- a/Documentation/mmc/mmc-dev-attrs.txt > +++ b/Documentation/mmc/mmc-dev-attrs.txt > @@ -30,6 +30,7 @@ All attributes are read-only. > rel_sectors Reliable write sector count > ocr Operation Conditions Register > dsr Driver Stage Register > + cmdq_en Command Queue enabled: 1 => enabled, 0 => not enabled > > Note on Erase Size and Preferred Erase Size: > > diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c > index 7fd722868875..5727a0842a59 100644 > --- a/drivers/mmc/core/mmc.c > +++ b/drivers/mmc/core/mmc.c > @@ -790,6 +790,7 @@ static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) > MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); > MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); > MMC_DEV_ATTR(ocr, "%08x\n", card->ocr); > +MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en); Why do we need to be able to change this from userspace? [...] Kind regards Uffe -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
