Douglas Anderson 9d9491a7da mmc: dw_mmc: Fix the DTO timeout calculation ... Just like the CTO timeout calculation introduced recently, the DTO timeout calculation was incorrect. It used "bus_hz" but, as far as I can tell, it's supposed to use the card clock. Let's account for the div value, which is documented as 2x the value stored in the register, or 1 if the register is 0. NOTE: This was likely not terribly important until commit 16a34574c6 ("mmc: dw_mmc: remove the quirks flags") landed because "DIV" is documented on Rockchip SoCs (the ones that used to define the quirk) to always be 0 or 1. ...and, in fact, it's documented to only be 1 with EMMC in 8-bit DDR52 mode. Thus before the quirk was applied to everyone it was mostly OK to ignore the DIV value. I haven't personally observed any problems that are fixed by this patch but I also haven't tested this anywhere with a DIV other an 0. AKA: this problem was found simply by code inspection and I have no failing test cases that are fixed by it. Presumably this could fix real bugs for someone out there, though. Fixes: 16a34574c6 ("mmc: dw_mmc: remove the quirks flags") Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>		2017-11-01 15:13:45 +01:00
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core	mmc: Delete bounce buffer handling	2017-10-04 10:22:55 +02:00
host	mmc: dw_mmc: Fix the DTO timeout calculation	2017-11-01 15:13:45 +01:00
Kconfig	mmc: Kconfig: downgrade CONFIG_MMC_DEBUG for host drivers only	2017-08-30 14:01:34 +02:00
Makefile	mmc: Kconfig: downgrade CONFIG_MMC_DEBUG for host drivers only	2017-08-30 14:01:34 +02:00