Many controllers have an upper limit on the number of blocks that can be
transferred in one request. Allow the host drivers to specify this and make
sure we avoid hitting this limit.
Also change the max_sectors field to avoid confusion. This makes it map
less directly to the block layer limits, but as they didn't apply directly
on MMC cards anyway, this isn't a great loss.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Currently on SD/MMC card removal the system exhibits the following message (the platform is ARM Versatile):
prev->state: 2 != TASK_RUNNING??
mmcqd/762[CPU#0]: BUG in __schedule at linux-2.6/kernel/sched.c:3826
(akpm: someone tried to fix this, but it's still wrong)
Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/drzeus/mmc:
mmc: correct request error handling
mmc: Flush block queue when removing card
mmc: sdhci high speed support
mmc: Support for high speed SD cards
mmc: Fix mmc_delay() function
mmc: Add support for mmc v4 wide-bus modes
[PATCH] mmc: Add support for mmc v4 high speed mode
trivial change for mmc/Kconfig: MMC_PXA does not mean only PXA255
Make general code cleanups
Add MMC_CAP_{MULTIWRITE,BYTEBLOCK} flags
Platform device error handling cleanup
Move register definitions away from the header file
Change OMAP_MMC_{READ,WRITE} macros to use the host pointer
Replace base with virt_base and phys_base
mmc: constify mmc_host_ops vectors
mmc: remove kernel_thread()
Converts from using struct "class_device" to "struct device" making
everything show up properly in /sys/devices/ with symlinks from the
/sys/class directory.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
After mmc_block's remove function has exited, we must not
touch the card structure in any way. This means we not only
must remove the gendisk, we must also flush out any
remaning requests already queued up.
We previously removed the disk, but didn't flush it,
causing oops:es when removing a card in the middle of a
transfer.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Replace kernel_thread() with kthread_run()/kthread_stop().
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Right now ->flags is a bit of a mess: some are request types, and
others are just modifiers. Clean this up by splitting it into
->cmd_type and ->cmd_flags. This allows introduction of generic
Linux block message types, useful for sending generic Linux commands
to block devices.
Signed-off-by: Jens Axboe <axboe@suse.de>
Patch from Juha [êölä
When the block queue is plugged, mq->req must be set to NULL.
Otherwise mq->req might be left non-NULL, even though mmcqd is
not processing a request, thus preventing the MMC queue thread from
being woken up when new requests do arrive.
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
