litmus-rt.git/drivers/mmc, branch v2.6.33-rc5

mfd: tmio_mmc hardware abstraction for CNF area

2010-01-18T11:30:27+00:00

This patch abstracts out the CNF area code from tmio_mmc which
is not present in all hardware that can use this driver. This
is required so that we can support non-toshiba based hardware.

ASIC3 support by Philipp Zabel

Signed-off-by: Ian Molton 
Signed-off-by: Magnus Damm 
Signed-off-by: Samuel Ortiz

mmc: allow for MMC v4.4

2010-01-11T17:34:06+00:00

JEDEC eMMC specification version 4.4 (MMCA 4.4) defines Extended CSD
structure versions up to 5.

Signed-off-by: Adrian Hunter 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mmc_block: fix queue cleanup

2010-01-11T17:34:06+00:00

The main bug was that 'blk_cleanup_queue()' was called while the block
device could still be in use, for example, because the card was removed
while files were still open.

In addition, to be sure that 'mmc_request()' will get called for all new
requests (so it can error them out), the queue is emptied during cleanup.
This is done after the worker thread is stopped to avoid racing with it.

Finally, it is not a device error for this to be happening, so quiet the
(sometimes very many) error messages.

Signed-off-by: Adrian Hunter 
Cc: 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mmc_block: fix probe error cleanup bug

2010-01-11T17:34:06+00:00

If mmc_blk_set_blksize() fails mmc_blk_probe() the request queue and its
thread have been set up and they need to be shut down properly before
putting the disk.

Signed-off-by: Jarkko Lavinen 
Signed-off-by: Adrian Hunter 
Cc: 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mmc_block: add dev_t initialization check

2010-01-11T17:34:06+00:00

When a card is removed before mmc_blk_probe() has called add_disk(), then
the minor field is uninitialized and has value 0.  This caused
mmc_blk_put() to always release devidx 0 even if 0 was still in use.  Then
the next mmc_blk_probe() used the first free idx of 0, which oopses in
sysfs, since it is used by another card.

Signed-off-by: Anna Lemehova 
Signed-off-by: Adrian Hunter 
Cc: 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sdhci-of: add support for the wii sdhci controller

2009-12-17T23:45:32+00:00

Add support for the Secure Digital Host Controller Interface found on the
"Hollywood" chipset of the Nintendo Wii video game console.

Signed-off-by: Albert Herranz 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sdhci-of: reorganize driver to support additional hardware

2009-12-17T23:45:31+00:00

This patch breaks down sdhci-of into a core portion and a eSDHC portion,
clearing the path to easily support additional hardware using the same OF
driver.

Signed-off-by: Albert Herranz 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sdhci-of: rename main driver file prior to reorganization

2009-12-17T23:45:31+00:00

This patch renames sdhci-of.c to sdhci-of-core.c before reorganizing the
driver to support additional hardware.

The driver is still built as sdhci-of despite the rename of the file.  No
functional change.

Signed-off-by: Albert Herranz 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sdhci: protect header file against multi inclusion

2009-12-17T23:45:31+00:00

Signed-off-by: Albert Herranz 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sdio: initialise SDIO functions and update card->sdio_funcs in lockstep

2009-12-17T23:45:31+00:00

Daniel Drake noticed a crash in the error path of mmc_attach_sdio().  This
bug is discussed at http://dev.laptop.org/ticket/9707.

BUG: unable to handle kernel paging request at 6b6b6c57
IP: [] sdio_remove_func+0x9/0x27
Call Trace:
[] ? mmc_sdio_remove+0x34/0x65
[] ? mmc_attach_sdio+0x217/0x240
[] ? mmc_rescan+0x1a2/0x20f
[] ? worker_thread+0x156/0x1e

We need to accurately track how many SDIO functions have been initialised
(and keep card->sdio_funcs in sync) so that we don't try to remove more
functions than we initialised if we hit the error path in
mmc_attach_sdio().

Without this patch if we hit the error path in mmc_attach_sdio() we run
the risk of deferencing invalid memory in sdio_remove_func(), leading to a
crash.

Signed-off-by: Matt Fleming 
Cc: Daniel Drake 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds