linux-toradex.git/arch/mn10300/kernel, branch v2.6.27.51

Rename old_readdir to sys_old_readdir

2009-01-18T18:35:31+00:00

commit e55380edf68796d75bf41391a781c68ee678587d upstream.

This way it matches the generic system call name convention.

Signed-off-by: Heiko Carstens 
Signed-off-by: Greg Kroah-Hartman

MN10300: Fix IRQ handling

2008-10-01T16:40:43+00:00

Fix the IRQ handling on the MN10300 arch.

This patch makes a number of significant changes:

 (1) It separates the irq_chip definition for edge-triggered interrupts from
     the one for level-triggered interrupts.

     This is necessary because the MN10300 PIC latches the IRQ channel's
     interrupt request bit (GxICR_REQUEST), even after the device has ceased to
     assert its interrupt line and the interrupt channel has been disabled in
     the PIC.  So for level-triggered interrupts we need to clear this bit when
     we re-enable - which is achieved by setting GxICR_DETECT but not
     GxICR_REQUEST when writing to the register.

     Not doing this results in spurious interrupts occurring because calling
     mask_ack() at the start of handle_level_irq() is insufficient - it fails
     to clear the REQUEST latch because the device that caused the interrupt is
     still asserting its interrupt line at this point.

 (2) IRQ disablement [irq_chip::disable_irq()] shouldn't clear the interrupt
     request flag for edge-triggered interrupts lest it lose an interrupt.

 (3) IRQ unmasking [irq_chip::unmask_irq()] also shouldn't clear the interrupt
     request flag for edge-triggered interrupts lest it lose an interrupt.

 (4) The end() operation is now left to the default (no-operation) as
     __do_IRQ() is compiled out.  This may affect misrouted_irq(), but
     according to Thomas Gleixner it's the correct thing to do.

 (5) handle_level_irq() is used for edge-triggered interrupts rather than
     handle_edge_irq() as the MN10300 PIC latches interrupt events even on
     masked IRQ channels, thus rendering IRQ_PENDING unnecessary.  It is
     sufficient to call mask_ack() at the start and unmask() at the end.

 (6) For level-triggered interrupts, ack() is now NULL as it's not used, and
     there is no effective ACK function on the PIC.  mask_ack() is now the
     same as mask() as the latch continues to latch, even when the channel is
     masked.

Further, the patch discards the disable() op implementation as its now the same
as the mask() op implementation, which is used instead.

It also discards the enable() op implementations as they're now the same as
the unmask() op implementations, which are used instead.

Signed-off-by: David Howells 
Signed-off-by: Linus Torvalds

MN10300: Make sched_clock() report time since boot

2008-09-24T23:38:17+00:00

Make sched_clock() report time since boot rather than time since last
timer interrupt.

Make sched_clock() expand and scale the 32-bit TSC value running at
IOCLK speed (~33MHz) to a 64-bit nanosecond counter, using cnt32_to_63()
acquired from the ARM arch and without using slow DIVU instructions
every call.

Signed-off-by: David Howells 
Signed-off-by: Linus Torvalds

removed unused #include 's

2008-08-23T19:14:12+00:00

This patch lets the files using linux/version.h match the files that
#include it.

Signed-off-by: Adrian Bunk 
Signed-off-by: Linus Torvalds

mn10300: Fix up __bug_table handling in module loader.

2008-08-05T00:22:17+00:00

Platforms that are using GENERIC_BUG must call in to
module_bug_finalize()/module_bug_cleanup() in order to scan modules with
their own __bug_table sections that are otherwise unaccounted.

Signed-off-by: Paul Mundt 
Signed-off-by: David Howells 
Signed-off-by: Linus Torvalds

MN10300: Wire up new system calls

2008-08-01T20:03:48+00:00

Wire up system calls added in the last merge window for the MN10300 arch.

Signed-off-by: David Howells 
Signed-off-by: Linus Torvalds

mn10300: use the common ascii hex helpers

2008-07-26T19:00:05+00:00

Signed-off-by: Harvey Harrison 
Acked-by: David Howells 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

MN10300: Fix MN10300's serial port driver to get at its tty_struct

2008-07-21T00:12:35+00:00

Fix MN10300's serial port driver to get at its tty_struct as this moved
from struct uart_info into struct tty_port in patch:

Signed-off-by: David Howells 
Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

mn10300: provide __ucmpdi2() for MN10300

2008-07-04T17:40:07+00:00

Provide __ucmpdi2() for MN10300 so that allmodconfig can be built.

Signed-off-by: David Howells 
Cc: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mn10300: export certain arch symbols required to build allmodconfig

2008-07-04T17:40:07+00:00

Export kernel_thread() and empty_zero_page so that allmodconfig can be
built for MN10300.

Signed-off-by: David Howells 
Cc: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds