kernel/linux.git/drivers/char/serial167.c, branch linux-2.6.22.y

drivers/char: use __set_current_state()

2007-05-08T18:15:13+00:00

use __set_current_state(TASK_*) instead of current->state = TASK_*, Signed-off-by: Milind Arun Choudhary Cc: Jiri Slaby Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Char: serial167, cleanup

2007-02-11T18:51:28+00:00

serial167, cleanup - Lindent the code - remove 3 pointers from paranoia_check Signed-off-by: Jiri Slaby Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] tty: switch to ktermios

2006-12-08T16:28:57+00:00

This is the grungy swap all the occurrences in the right places patch that goes with the updates. At this point we have the same functionality as before (except that sgttyb() returns speeds not zero) and are ready to begin turning new stuff on providing nobody reports lots of bugs If you are a tty driver author converting an out of tree driver the only impact should be termios->ktermios name changes for the speed/property setting functions from your upper layers. If you are implementing your own TCGETS function before then your driver was broken already and its about to get a whole lot more painful for you so please fix it 8) Also fill in c_ispeed/ospeed on init for most devices, although the current code will do this for you anyway but I'd like eventually to lose that extra paranoia [akpm@osdl.org: bluetooth fix] [mp3@de.ibm.com: sclp fix] [mp3@de.ibm.com: warning fix for tty3270] [hugh@veritas.com: fix tty_ioctl powerpc build] [jdike@addtoit.com: uml: fix ->set_termios declaration] Signed-off-by: Alan Cox Signed-off-by: Martin Peschke Acked-by: Peter Oberparleiter Cc: Cornelia Huck Signed-off-by: Hugh Dickins Signed-off-by: Jeff Dike Cc: Paolo 'Blaisorblade' Giarrusso Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] drivers/{char|isdn}: work_struct-induced breakage

2006-12-06T19:09:08+00:00

part 1 of fsck-knows-how-many Signed-off-by: Al Viro Signed-off-by: Linus Torvalds

[PATCH] serial167 __user annotations, NULL noise removal

2006-10-15T18:00:58+00:00

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

[PATCH] m68k/MVME167: SERIAL167 tty flip buffer updates

2006-10-09T21:54:46+00:00

Compile fixes related to changed tty flip buffer handling. Signed-off-by: Kars de Jong Signed-off-by: Geert Uytterhoeven Signed-off-by: Linus Torvalds

[PATCH] m68k/MVME167: SERIAL167 is no longer broken

2006-10-09T21:54:46+00:00

- SERIAL167 is no longer broken - Removed some unused variables from the driver to fix compiler warnings Signed-off-by: Kars de Jong Signed-off-by: Geert Uytterhoeven Signed-off-by: Linus Torvalds

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

2006-10-05T14:10:12+00:00

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] Char: serial167, remove useless tty check

2006-10-04T14:55:13+00:00

serial167, remove useless tty check tty is dereferenced before it is checked to be non-NULL. Remove such check. Signed-off-by: Jiri Slaby Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] char: kill unneeded memsets

2006-10-04T14:55:13+00:00

char, another tmp_buf cleanup No need to allocate one page as a side buffer. It's no more used. Clean this (de)allocs of this useless memory pages in char subtree. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds