linux.git/arch/mips/include, branch v2.6.30

MIPS: Outline udelay and fix a few issues.

2009-06-08T15:57:51+00:00

Outlining fixes the issue were on certain CPUs such as the R10000 family
the delay loop would need an extra cycle if it overlaps a cacheline
boundary.

The rewrite also fixes build errors with GCC 4.4 which was changed in
way incompatible with the kernel's inline assembly.

Relying on pure C for computation of the delay value removes the need for
explicit.  The price we pay is a slight slowdown of the computation - to
be fixed on another day.

Signed-off-by: Ralf Baechle

MIPS: ioctl.h: Fix headers_check warnings

2009-06-08T15:57:51+00:00

Make ioctl.h compatible with asm-generic/ioctl.h and userspace

fix the following 'make headers_check' warning:

  usr/include/asm-mips/ioctl.h:64: extern's make no sense in userspace

Signed-off-by: Jaswinder Singh Rajput 
Signed-off-by: Ralf Baechle

MIPS: Fix sparse warning in incompatiable argument type of clear_user.

2009-05-22T12:52:05+00:00

The type of the second argument of access_ok should be (void __user *).
The unnecessary conversion of the clear_user address argument was causing
sparse to emit warnings on the __chk_user_ptr check.

Signed-off-by: Wu Zhangjin 
Signed-off-by: Ralf Baechle

MIPS: Rewrite to work with gcc 4.4.0.

2009-05-14T12:50:29+00:00

The inline assembler used on 32-bit kernels was using the "h" constraint
which was considered dangerous and removed for gcc 4.4.0.

Signed-off-by: Ralf Baechle

MIPS: Fix highmem.

2009-05-14T12:50:29+00:00

Commit 351336929ccf222ae38ff0cb7a8dd5fd5c6236a0 (kernel.org) rsp.
b3594a089f1c17ff919f8f78505c3f20e1f6f8ce (linux-mips.org):

> From: Chris Dearman 
> Date: Wed, 19 Sep 2007 00:58:24 +0100
> Subject: [PATCH] [MIPS] Allow setting of the cache attribute at run time.
>
> Slightly tacky, but there is a precedent in the sparc archirecture code.

introduces the variable _page_cachable_default, which defaults to zero and.
is used to create the prototype PTE for __kmap_atomic in
arch/mips/mm/init.c:kmap_init before initialization in
arch/mips/mm/c-r4k.c:coherency_setup, so the default value of 0 will be
used as the CCA of kmap atomic pages which on many processors is not a
defined CCA value and may result in writes to kmap_atomic pages getting
corrupted.  Debugged by Jon Fraser (jfraser@broadcom.com).

Signed-off-by: Ralf Baechle

MIPS: Fix sign-extension bug in 32-bit kernel on 32-bit hardware.

2009-05-14T12:50:29+00:00

Probably nobody does arithmetic on cp0 register values so this has never
bitten.

Signed-off-by: Ralf Baechle

MIPS: IP27: Get rid of #ident. Gcc 4.4.0 doesn't like it.

2009-05-14T12:50:28+00:00

Signed-off-by: Ralf Baechle

MIPS: uaccess: Switch lock annotations to might_fault().

2009-05-14T12:50:28+00:00

Signed-off-by: Ralf Baechle

MIPS: Make uaccess.h slightly more sparse friendly.

2009-05-14T12:50:28+00:00

Signed-off-by: Ralf Baechle

MIPS: Make access_ok() sideeffect proof.

2009-05-14T12:50:27+00:00

Signed-off-by: Ralf Baechle