linux.git/drivers/mmc/core, branch v2.6.39

Revert "mmc: fix a race between card-detect rescan and clock-gate work instances"

2011-05-16T15:32:26+00:00

This reverts commit 26fc8775b51484d8c0a671198639c6d5ae60533e, which has
been reported to cause boot/resume-time crashes for some users:

https://bbs.archlinux.org/viewtopic.php?id=118751.

Signed-off-by: Chris Ball 
Cc:

mmc: fix a race between card-detect rescan and clock-gate work instances

2011-04-27T23:16:12+00:00

Currently there is a race in the MMC core between a card-detect
rescan work and the clock-gating work, scheduled from a command
completion. Fix it by removing the dedicated clock-gating mutex
and using the MMC standard locking mechanism instead.

Signed-off-by: Guennadi Liakhovetski 
Cc: Simon Horman 
Cc: Magnus Damm 
Acked-by: Linus Walleij 
Cc: 
Signed-off-by: Chris Ball

mmc: core: mmc_add_card(): fix missing break in switch statement

2011-04-27T23:15:07+00:00

Fixes a cosmetic bug that affects printk() for SD-combo cards.

Reported-by: Prashanth Bhat 
Signed-off-by: Michał Mirosław 
Signed-off-by: Chris Ball

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

mmc: fix mmc_app_send_scr() for dma transfer

2011-03-25T14:30:50+00:00

This patch is based on the commit "af51715079e7fb6b290e1881d63d815dc4de5011":

   * Bugfix to that mmc_send_cxd_data() code:  dma-to-stack is
     unsafe/nonportable, so kmalloc a bounce buffer instead.

The driver may invalidate the mmc_card->csd when host driver uses dma.
So this subroutine also needs a kmalloc buffer.

Signed-off-by: Yoshihiro Shimoda 
Signed-off-by: Chris Ball

mmc: core: reset card voltage after power off

2011-03-17T19:35:13+00:00

At power off, reset OCR mask to be the highest possible voltage
supported for the current mmc host.

This solves the re-initialization during the power up sequence.
The voltage may have been decreased due to the card accepts a lower
voltage than the voltage used during the initialization sequence.
We need to reset the voltage to by the host highest possible value
since according to specification the initialization must always be
done at high voltage.

Reviewed-by: Jonas Aberg 
Signed-off-by: Ulf Hansson 
Signed-off-by: Linus Walleij 
Signed-off-by: Chris Ball

mmc: core: export function mmc_do_release_host()

2011-03-17T19:35:11+00:00

When using mmc_try_claim_host the corresponding release
function is mmc_do_release_host, which then also must
be exported.

Reviewed-by: Jonas Aberg 
Reviewed-by: Sebastian Rasmussen 
Signed-off-by: Ulf Hansson 
Signed-off-by: Linus Walleij 
Signed-off-by: Chris Ball

mmc: sdio: remember new card RCA when redetecting card

2011-03-17T19:35:09+00:00

During redetection of a SDIO card, a request for a new card RCA
was submitted to the card, but was then overwritten by the old RCA.
This caused the card to be deselected instead of selected when using
the incorrect RCA.  This bug's been present since the "oldcard"
handling was introduced in 2.6.32.

Signed-off-by: Stefan Nilsson XK 
Reviewed-by: Ulf Hansson 
Reviewed-by: Pawel Wieczorkiewicz 
Signed-off-by: Linus Walleij 
Cc: 
Signed-off-by: Chris Ball

mmc: check if mmc cards < 2GB do sector addressing

2011-03-16T16:30:25+00:00

Some TOSHIBA MMC cards only support sector addressing even though the
size is < 2GB.  According to JEDEC Spec JESD84-A441-1 the ocr register
(bits 30, 29) determine byte/sector mode.  Use them.

Signed-off-by: Philip Rakity 
Signed-off-by: Chris Ball

mmc: core: comment on why sdio_reset is done at init time

2011-03-16T16:30:11+00:00

sdio_reset sends a CMD52 to reset the sdio card.  This is highly
recommended for sdio cards being reinitialized.  Since we do not
know if the card is being reinitialized we just send the command.
SD/eMMC cards are supposed to ignore the CMD before the CMD0.
Document why we are doing this.

Signed-off-by: Philip Rakity 
Signed-off-by: Chris Ball