Adrian Hunter 1815e61b1a mmc: mmc: Improve reliability of mmc_select_hs200() ... Currently mmc_select_hs200() uses __mmc_switch() which checks the success of the switch to HS200 mode using CMD13 (SEND_STATUS). The problem is that it does that using the timing settings of legacy mode. That is prone to error, not least because the timing parameters for legacy mode are tighter than the timing parameters for HS200 mode. In the case when CMD13 polling is used (i.e. not MMC_CAP_WAIT_WHILE_BUSY) with the switch command, it must be assumed that using different modes on the card and host must work. However in the case when CMD13 polling is not used (i.e. MMC_CAP_WAIT_WHILE_BUSY) mmc_select_hs200() can be made more reliable by setting the host to the correct timing before sending CMD13. This patch does that. A complication is that the caller, mmc_select_timing(), will ignore a switch error (indicated by -EBADMSG), assume the old mode is valid and continue, so the old timing must be restored in that case. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: <stable@vger.kernel.org> # 4.2+ Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>		2015-11-09 13:12:08 +01:00
..
bus.c
bus.h
core.c	mmc: core: Add mmc_regulator_set_vqmmc()	2015-10-26 16:00:10 +01:00
core.h	mmc: core: Remove MMC_CLKGATE	2015-10-26 16:00:09 +01:00
debugfs.c	mmc: core: Remove MMC_CLKGATE	2015-10-26 16:00:09 +01:00
host.c	mmc: core: Add DT bindings for eMMC hardware reset support	2015-10-27 10:21:15 +01:00
host.h
Kconfig	mmc: core: Remove MMC_CLKGATE	2015-10-26 16:00:09 +01:00
Makefile
mmc_ops.c	mmc: mmc: extend the mmc_send_tuning()	2015-10-27 10:38:41 +01:00
mmc_ops.h	mmc: core: Convert __mmc_switch() into an internal core function	2015-10-26 15:59:54 +01:00
mmc.c	mmc: mmc: Improve reliability of mmc_select_hs200()	2015-11-09 13:12:08 +01:00
pwrseq_emmc.c	mmc: pwrseq: Use highest priority for eMMC restart handler	2015-10-27 11:11:06 +01:00
pwrseq_simple.c	mmc: pwrseq_simple: use GPIO descriptors array API	2015-10-26 15:59:59 +01:00
pwrseq.c
pwrseq.h
quirks.c	mmc: core: Remove MMC_CLKGATE	2015-10-26 16:00:09 +01:00
sd_ops.c
sd_ops.h
sd.c	mmc: skip reclaiming host on mmc_add_card() error	2015-10-26 16:00:14 +01:00
sd.h
sdio_bus.c	mmc: core: Attach PM domain prior probing of SDIO func driver	2015-06-04 10:03:51 +02:00
sdio_bus.h
sdio_cis.c
sdio_cis.h
sdio_io.c
sdio_irq.c	mmc: core: Remove MMC_CLKGATE	2015-10-26 16:00:09 +01:00
sdio_ops.c
sdio_ops.h	mmc: Add mmc_is_io_op helper function	2015-10-26 16:00:01 +01:00
sdio.c	mmc: core: Remove MMC_CLKGATE	2015-10-26 16:00:09 +01:00
slot-gpio.c
slot-gpio.h