linux/drivers/mmc/core
Adrian Hunter 1c447116d0 mmc: mmc: Fix partition switch timeout for some eMMCs
Some eMMCs set the partition switch timeout too low.

Now typically eMMCs are considered a critical component (e.g. because
they store the root file system) and consequently are expected to be
reliable.  Thus we can neglect the use case where eMMCs can't switch
reliably and we might want a lower timeout to facilitate speedy
recovery.

Although we could employ a quirk for the cards that are affected (if
we could identify them all), as described above, there is little
benefit to having a low timeout, so instead simply set a minimum
timeout.

The minimum is set to 300ms somewhat arbitrarily - the examples that
have been seen had a timeout of 10ms but were sometimes taking 60-70ms.

Cc: stable@vger.kernel.org
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-05-16 11:31:28 +02:00
..
bus.c mmc: enable MMC/SD/SDIO device to suspend/resume asynchronously 2015-12-22 11:32:16 +01:00
bus.h mmc: rename dev_to_mmc_card() to mmc_dev_to_card() 2010-10-23 21:11:12 +08:00
core.c mmc: core: Do regular power cycle when lacking eMMC HW reset support 2016-05-02 10:33:24 +02:00
core.h mmc: fix mmc_{un,}register_pm_notifier prototypes 2015-12-22 11:32:09 +01:00
debugfs.c mmc: debugfs: Add a restriction to mmc debugfs clock setting 2016-02-29 11:02:49 +01:00
host.c mmc: core: Convert from IDR to IDA for host indexes 2016-05-02 10:33:36 +02:00
host.h mmc: host: Add facility to support re-tuning 2015-06-01 09:06:53 +02:00
Kconfig mmc: pwrseq: convert to proper platform device 2016-05-02 10:33:30 +02:00
Makefile mmc: pwrseq: convert to proper platform device 2016-05-02 10:33:30 +02:00
mmc_ops.c mmc: remove unnecessary assignment statements before return 2016-02-29 11:02:47 +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: Fix partition switch timeout for some eMMCs 2016-05-16 11:31:28 +02:00
pwrseq_emmc.c mmc: pwrseq: convert to proper platform device 2016-05-02 10:33:30 +02:00
pwrseq_simple.c mmc: pwrseq: convert to proper platform device 2016-05-02 10:33:30 +02:00
pwrseq.c mmc: pwrseq: convert to proper platform device 2016-05-02 10:33:30 +02:00
pwrseq.h mmc: pwrseq: convert to proper platform device 2016-05-02 10:33:30 +02:00
quirks.c mmc: core: Remove MMC_CLKGATE 2015-10-26 16:00:09 +01:00
sd_ops.c mmc: remove unnecessary assignment statements before return 2016-02-29 11:02:47 +01:00
sd_ops.h mmc: add erase, secure erase, trim and secure trim operations 2010-08-12 08:43:30 -07:00
sd.c mmc: core: remove redundant memset of mmc_decode_cid 2016-03-17 14:54:41 +01:00
sd.h mmc: drop the speed mode of card's state 2014-05-12 18:05:53 -04:00
sdio_bus.c mmc: enable MMC/SD/SDIO device to suspend/resume asynchronously 2015-12-22 11:32:16 +01:00
sdio_bus.h
sdio_cis.c mmc: sdio: fall back to SDIO 1.0 for broken 1.1 cards 2016-05-16 11:31:27 +02:00
sdio_cis.h
sdio_io.c mmc: sdio: Use multiple scatter/gather list 2012-12-06 13:54:43 -05:00
sdio_irq.c mmc: core: Remove MMC_CLKGATE 2015-10-26 16:00:09 +01:00
sdio_ops.c mmc: remove unnecessary assignment statements before return 2016-02-29 11:02:47 +01:00
sdio_ops.h mmc: Add mmc_is_io_op helper function 2015-10-26 16:00:01 +01:00
sdio.c mmc: core: remove redundant memset of sdio_read_cccr 2016-03-17 14:54:41 +01:00
slot-gpio.c mmc: slot-gpio: Allow host driver to provide isr for card-detect interrupts 2015-01-19 09:56:29 +01:00
slot-gpio.h mmc: slot-gpio: Make mmc_gpio_alloc() available for MMC core 2015-01-19 09:56:17 +01:00