linux-toradex.git/drivers/mmc, branch v2.6.27.12

mmc: increase SD write timeout for crappy cards

2008-11-13T17:56:04+00:00

commit 493890e75d98810a3470b4aae23be628ee5e9667 upstream.

It seems that some cards are slightly out of spec and occasionally
will not be able to complete a write in the alloted 250 ms [1].
Incease the timeout slightly to allow even these cards to function
properly.

[1] http://lkml.org/lkml/2008/9/23/390

Signed-off-by: Pierre Ossman 
Signed-off-by: Greg Kroah-Hartman

atmel-mci: Initialize BLKR before sending data transfer command

2008-10-06T21:26:24+00:00

The atmel-mci driver sometimes fails data transfers like this:

   mmcblk0: error -5 transferring data
   end_request: I/O error, dev mmcblk0, sector 2749769
   end_request: I/O error, dev mmcblk0, sector 2749777

It turns out that this might be caused by the BLKR register (which
contains the block size and the number of blocks being transfered) being
initialized too late. This patch moves the initialization of BLKR so
that it contains the correct value before the block transfer command is
sent.

This error is difficult to reproduce, but if you insert a long delay
(mdelay(10) or thereabouts) between the calls to atmci_start_command()
and atmci_submit_data(), all transfers seem to fail without this patch,
while I haven't seen any failures with this patch.

Reported-by: Hein_Tibosch 
Signed-off-by: Haavard Skinnemoen 
Signed-off-by: Pierre Ossman 
Signed-off-by: Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc

2008-09-21T19:38:45+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  mmc_test: initialize mmc_test_lock statically
  mmc_block: handle error from mmc_register_driver()
  atmel-mci: Set MMC_CAP_NEEDS_POLL if no detect_pin
  atmel-mci: Fix bogus debugfs file size
  atmel-mci: Fix memory leak in atmci_regs_show
  atmel-mci: debugfs: enable clock before dumping regs
  tmio_mmc: fix compilation with debug enabled

mmc_test: initialize mmc_test_lock statically

2008-09-20T11:03:50+00:00

The mutex mmc_test_lock is initialized at every time mmc_test device
is probed. Probing another mmc_test device may break the mutex, if
the probe function is called while the mutex is locked.

This patch fixes it by statically initializing mmc_test_lock.

Signed-off-by: Akinobu Mita 
Signed-off-by: Pierre Ossman

mmc_block: handle error from mmc_register_driver()

2008-09-20T11:03:26+00:00

Check error from mmc_register_driver() and properly unwind
block device registration.

Signed-off-by: Akinobu Mita 
Signed-off-by: Pierre Ossman

atmel-mci: Set MMC_CAP_NEEDS_POLL if no detect_pin

2008-09-20T10:12:23+00:00

This allows the mmc core to detect card insertion/removal for slots that
don't have any CD pin wired up.

Signed-off-by: Haavard Skinnemoen 
Signed-off-by: Pierre Ossman

atmel-mci: Fix bogus debugfs file size

2008-09-20T10:12:09+00:00

We used to store a binary register snapshot in the "regs" file, so we
set the file size to be the size of this snapshot. This is no longer
valid since we switched to using seq_file.

Signed-off-by: Haavard Skinnemoen 
Signed-off-by: Pierre Ossman

atmel-mci: Fix memory leak in atmci_regs_show

2008-09-20T10:11:48+00:00

The debugfs hook atmci_regs_show allocates a temporary buffer for
storing a register snapshot, but it doesn't free it before returning.
Plug this leak.

Signed-off-by: Haavard Skinnemoen 
Signed-off-by: Pierre Ossman

atmel-mci: debugfs: enable clock before dumping regs

2008-09-20T10:11:29+00:00

Make sure that the peripheral clock is enabled before reading the MMIO
registers for the debugfs "regs" dump.

Signed-off-by: Haavard Skinnemoen 
Signed-off-by: Pierre Ossman

tmio_mmc: fix compilation with debug enabled

2008-09-20T10:11:13+00:00

Signed-off-by: Dmitry Baryshkov 
Acked-by: Ian Molton 
Signed-off-by: Pierre Ossman