linux.git/drivers/mmc/core, branch v3.2-rc6

mmc: core: Fix deadlock when the CONFIG_MMC_UNSAFE_RESUME is not defined

2011-12-10T21:18:39+00:00

mmc_suspend_host() tries to claim host during suspend
and release it only when the bus suspend operation is
compeleted. If CONFIG_MMC_UNSAFE_RESUME is defined and
the host is flagged as removable, mmc_suspend_host()
tries to remove the card. In this process, the file system
sync can get blocked trying to acquire host which is already
claimed by mmc_suspend_host() causing deadlock.

Fix this deadlock by releasing host before ->remove() is called.

Signed-off-by: Sujit Reddy Thumma 
Acked-by: Ulf Hansson 
Acked-by: Linus Walleij 
Signed-off-by: Chris Ball

mmc: core: Fix typo at mmc_card_sleep

2011-12-10T21:18:37+00:00

Fix wrong bus_ops->sleep check.  (This isn't expected to have real-world
consequences, because the mmc core always defines both 'awake' and
'sleep' ops.)

Signed-off-by: Kyungmin Park 
Signed-off-by: Chris Ball

mmc: core: Fix power_off_notify during suspend

2011-12-10T21:18:36+00:00

The eMMC 4.5 devices respond to only RESET and AWAKE command in the
sleep state. Hence the mmc switch command to notify power off state
should be sent before the device enters sleep state.

This patch fixes the same.

Signed-off-by: Girish K S 
Signed-off-by: Chris Ball

mmc: core: Fix setting power notify state variable for non-eMMC

2011-12-10T21:18:36+00:00

This patch skips the setting of the power notify state variable
for non eMMC 4.5 devices. Also fixes the problem of omap_hsmmc
noisy/broken for suspend resume reported by Kevin Hilman.

Signed-off-by: Girish K S 
Acked-by: Ulf Hansson 
Signed-off-by: Chris Ball

mmc: core: Add quirk for long data read time

2011-12-10T21:18:35+00:00

Adds a quirk that sets the data read timeout to a fixed value instead
of relying on the information in the CSD. The timeout value chosen
is 300ms since that has proven enough for the problematic cards found,
but could be increased if other cards require this.

This patch also enables this quirk for certain Micron cards known to
have this problem.

Signed-off-by: Stefan Nilsson XK 
Signed-off-by: Ulf Hansson 
Acked-by: Linus Walleij 
Cc: 
Signed-off-by: Chris Ball

mmc: Fix implicit use of stat.h header in associated files

2011-10-31T23:32:07+00:00

Once the implicit use of module.h is prevented, these files will
fail to find the stat.h header content.

Fix up the implicit usage expectations in advance of the cleanup.

Signed-off-by: Paul Gortmaker

mmc: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required

2011-10-31T23:32:06+00:00

These two basic defines were everywhere, simply because module.h
was also everywhere.   But we are cleaning up the latter.  So make
the exporters actually call out their need for the include.

Signed-off-by: Paul Gortmaker

mmc: core: Cleanup eMMC4.5 conditionals

2011-10-27T13:11:33+00:00

Code cleanup, putting all eMMC 4.5 detection cases together.
This patch removes one if-statement and assembles all. And it also
removes variable initialization below else-statement -- all members
of card structure are already set to zero at card-init.

Signed-off-by: Seungwon Jeon 
Signed-off-by: Chris Ball

mmc: core: Prevent too long response times for suspend

2011-10-26T20:32:31+00:00

While trying to suspend the mmc host there could still be
ongoing requests that we need to wait for. At the same time
a device driver must respond to a suspend request rather quickly.

Instead of potentially wait "forever" by claiming the host we now
"try" to claim the host instead. If it fails, -EBUSY is returned.

Signed-off-by: Ulf Hansson 
Reviewed-by: Sujit Reddy Thumma 
Acked-by: Linus Walleij 
Signed-off-by: Chris Ball

mmc: recognise SDIO cards with SDIO_CCCR_REV 3.00

2011-10-26T20:32:31+00:00

Table 6-2: CCCR bit Definitions, address 00h.  Part E1 SDIO Simplified
Specification Version 3.00, Feb. 25, 2011.

This patch has been tested with Marvell WLAN device SD8797.

Signed-off-by: Bing Zhao 
Signed-off-by: Chris Ball