linux/drivers/mmc, branch v2.6.19

MMC: Do not set unsupported bits in OCR response

2006-11-09T06:23:54Z

The card might go to inactive state (according to specification), if there are unsupported bits set in the OCR. Signed-off-by: Timo Teras Signed-off-by: Pierre Ossman

MMC: Poll card status after rescanning cards

2006-11-09T06:23:37Z

Some broken cards seem to process CMD1 even in stand-by state. The result is that the card replies with ILLEGAL_COMMAND error for the next command sent after rescanning. Currently the next command is select card, which would return the error. But CMD7 does actually succeed and retries of the command will timeout. The workaround is to poll card status after CMD1 to clear the pending error. Signed-off-by: Timo Teras Signed-off-by: Pierre Ossman

[PATCH] missing includes of io.h

2006-10-25T05:01:11Z

Signed-off-by: Al Viro Signed-off-by: Linus Torvalds

[PATCH] passing pointer to setup_timer() should be via unsigned long

2006-10-10T22:37:22Z

Signed-off-by: Al Viro Signed-off-by: Linus Torvalds

[PATCH] tifm __iomem annotations, NULL noise removal

2006-10-09T21:19:08Z

Signed-off-by: Al Viro Signed-off-by: Linus Torvalds

[PATCH] mmc: multi sector write transfers

2006-10-06T15:53:41Z

SD cards extend the protocol by allowing the host to query a card how many blocks were successfully stored on the medium. This allows us to safely write chunks of blocks at once. Signed-off-by: Pierre Ossman Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

IRQ: Maintain regs pointer globally rather than passing to IRQ handlers

2006-10-05T14:10:12Z

Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

[PATCH] mmc: properly use the new multi block-write error handling

2006-10-04T14:55:15Z

Use the new multi block-write error reporting flag and properly tell the block layer how much data was transferred before the error. Signed-off-by: Pierre Ossman Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] mmc: use own work queue

2006-10-04T14:55:15Z

The MMC layer uses the standard work queue for doing card detection. As this queue is shared with other crucial subsystems, the effects of a long (and perhaps buggy) detection can cause the system to be unusable. E.g. the keyboard stops working while the detection routine is running. The solution is to add a specific mmc work queue to run the detection code in. This is similar to how other subsystems handle detection (a full kernel thread is the most common theme). Signed-off-by: Pierre Ossman Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] mmc: avoid some resets without card

2006-10-04T14:55:14Z

Some Ricoh controllers only respect a full reset when there is no card in the slot. As we wait for the reset to complete, we must avoid even requesting those resets on the buggy controllers. Signed-off-by: Pierre Ossman Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds