linux-toradex.git/arch/mips/kernel/irq-msc01.c, branch v4.9.129

MIPS: MSC: Prevent out-of-bounds writes to MIPS SC ioremap'd region

2014-06-26T09:48:23+00:00

Previously, the lower limit for the MIPS SC initialization loop was
set incorrectly allowing one extra loop leading to writes
beyond the MSC ioremap'd space. More precisely, the value of the 'imp'
in the last loop increased beyond the msc_irqmap_t boundaries and
as a result of which, the 'n' variable was loaded with an incorrect
value. This value was used later on to calculate the offset in the
MSC01_IC_SUP which led to random crashes like the following one:

CPU 0 Unable to handle kernel paging request at virtual address e75c0200,
epc == 8058dba4, ra == 8058db90
[...]
Call Trace:
[<8058dba4>] init_msc_irqs+0x104/0x154
[<8058b5bc>] arch_init_irq+0xd8/0x154
[<805897b0>] start_kernel+0x220/0x36c

Kernel panic - not syncing: Attempted to kill the idle task!

This patch fixes the problem

Signed-off-by: Markos Chandras 
Reviewed-by: James Hogan 
Cc: stable@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7118/
Signed-off-by: Ralf Baechle

MIPS: MT: Remove SMTC support

2014-05-23T22:07:01+00:00

Nobody is maintaining SMTC anymore and there also seems to be no userbase.
Which is a pity - the SMTC technology primarily developed by Kevin D.
Kissell  is an ingenious demonstration for the MT
ASE's power and elegance.

Based on Markos Chandras  patch
https://patchwork.linux-mips.org/patch/6719/ which while very similar did
no longer apply cleanly when I tried to merge it plus some additional
post-SMTC cleanup - SMTC was a feature as tricky to remove as it was to
merge once upon a time.

Signed-off-by: Ralf Baechle

MIPS: Whitespace cleanup.

2013-02-01T09:00:22+00:00

Having received another series of whitespace patches I decided to do this
once and for all rather than dealing with this kind of patches trickling
in forever.

Signed-off-by: Ralf Baechle

mips: remove needless include of module.h from core kernel files.

2011-10-31T23:30:57+00:00

None of these files are using modular infrastructure, and build
tests reveal that none of these files are really relying on any
implicit inclusions via. module.h either.  So delete them.

Signed-off-by: Paul Gortmaker

MIPS: Convert the irq functions to the new names

2011-03-29T12:48:07+00:00

Scripted with coccinelle.

Signed-off-by: Thomas Gleixner

MIPS: MSC01: Convert to new irq_chip functions

2011-03-25T17:45:17+00:00

Signed-off-by: Thomas Gleixner 
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2188/
Signed-off-by: Ralf Baechle

MIPS: Enable GENERIC_HARDIRQS_NO__DO_IRQ for all platforms

2009-03-30T12:49:44+00:00

__do_IRQ() is deprecated and will go away.

Signed-off-by: Ralf Baechle

[MIPS] Fix some sparse warnings on traps.c and irq-msc01.c

2008-04-28T16:14:32+00:00

* Declare board_bind_eic_interrupt, board_watchpoint_handler in traps.h
* Make msc_bind_eic_interrupt static and fix its argument types.
* Make msc_levelirq_type, msc_edgeirq_type static.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

[MIPS] Fix "no space between function name and open parenthesis" warnings.

2007-10-11T22:46:15+00:00

Signed-off-by: Ralf Baechle

[MIPS] SMTC: Make ack_bad_irq() safe with no IM backstop.

2007-09-24T17:13:02+00:00

Issue reported and original patch by Kevin Kissel, cleaner (imho)
implementation by me.

Signed-off-by: Ralf Baechle