linux-stable.git/arch/mips/include, branch linux-2.6.35.y

compat: Make compat_alloc_user_space() incorporate the access_ok()

2010-09-20T20:36:44+00:00

commit c41d68a513c71e35a14f66d71782d27a79a81ea6 upstream.

compat_alloc_user_space() expects the caller to independently call
access_ok() to verify the returned area.  A missing call could
introduce problems on some architectures.

This patch incorporates the access_ok() check into
compat_alloc_user_space() and also adds a sanity check on the length.
The existing compat_alloc_user_space() implementations are renamed
arch_compat_alloc_user_space() and are used as part of the
implementation of the new global function.

This patch assumes NULL will cause __get_user()/__put_user() to either
fail or access userspace on all architectures.  This should be
followed by checking the return value of compat_access_user_space()
for NULL in the callers, at which time the access_ok() in the callers
can also be removed.

Reported-by: Ben Hawkes 
Signed-off-by: H. Peter Anvin 
Acked-by: Benjamin Herrenschmidt 
Acked-by: Chris Metcalf 
Acked-by: David S. Miller 
Acked-by: Ingo Molnar 
Acked-by: Thomas Gleixner 
Acked-by: Tony Luck 
Cc: Andrew Morton 
Cc: Arnd Bergmann 
Cc: Fenghua Yu 
Cc: H. Peter Anvin 
Cc: Heiko Carstens 
Cc: Helge Deller 
Cc: James Bottomley 
Cc: Kyle McMartin 
Cc: Martin Schwidefsky 
Cc: Paul Mackerras 
Cc: Ralf Baechle 
Signed-off-by: Greg Kroah-Hartman

MIPS: Quit using undefined behavior of ADDU in 64-bit atomic operations.

2010-07-26T18:08:18+00:00

For 64-bit, we must use DADDU and DSUBU.

Signed-off-by: David Daney 
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1483/
Signed-off-by: Ralf Baechle

MIPS: N32: Define getdents64.

2010-07-26T18:08:17+00:00

As a relativly new ABI N32 should only have received the getdents64(2) but
instead it only had getdents(2).  This was noticed as a performance anomaly
in glibc.

Signed-off-by: Ralf Baechle

MIPS: BCM47xx: Add NVRAM support devices

2010-07-05T16:17:32+00:00

When trying to netboot a Linksys WRT54GS WLAN router, the bootup fails,
because of following error message:

...
[    0.424000] b44: b44.c:v2.0
[    0.424000] b44: Invalid MAC address found in EEPROM
[    0.432000] b44 ssb0:1: Problem fetching invariants of chip,aborting
[    0.436000] b44: probe of ssb0:1 failed with error -22
...

The router uses a CFE bootloader, but most of the needed environment
variables for network card initialization, are not available from CFE
via printenv and even though not via cfe_getenv().
The required environment variables are saved in a special partition
in flash memory. The attached patch implement nvram_getenv and enables
bootup via NFS root on my router.

Most of the patch is extracted from the OpenWrt subversion repository and
stripped down and cleaned up to just fix this issue.

[Ralf: sorted out header file inclusions.  Lots of unneded headers and such
that should have been included.]

Signed-off-by: Waldemar Brodkorb 
Reviewed-by: Phil Sutter 
To: linux-mips@linux-mips.org
Cc: Hauke Mehrtens 
Patchwork: http://patchwork.linux-mips.org/patch/1359/
Signed-off-by: Ralf Baechle

MIPS: Alchemy: sleepcode without compile-time cputype dependencies

2010-07-05T16:17:30+00:00

Split the low-level sleepcode into per-cpu functions instead of
relying on compile-time-defined cpu type.

Signed-off-by: Manuel Lauss 
To: Linux-MIPS 
Patchwork: http://patchwork.linux-mips.org/patch/1281/
Signed-off-by: Ralf Baechle

MIPS: AR7, BCM63xx: fix gpio_to_irq() return value

2010-07-05T16:17:26+00:00

The return value of gpio_to_irq() is not a pointer but an integer.

Signed-off-by: Yoichi Yuasa 
Cc: linux-mips 
Patchwork: http://patchwork.linux-mips.org/patch/1280/
Signed-off-by: Ralf Baechle

MIPS: AR7: Fix typo in ar7.h

2010-07-05T16:17:18+00:00

This fixes a typo on the AR7_RESET_PERIPHERAL define.

Signed-off-by: Florian Fainelli 
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1247/
Signed-off-by: Ralf Baechle

mips: use use asm-generic/scatterlist.h

2010-05-27T16:12:55+00:00

Signed-off-by: FUJITA Tomonori 
Cc: Ralf Baechle 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

2010-05-21T22:23:54+00:00

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (25 commits)
  MIPS: Use GCC __builtin_prefetch() to implement prefetch().
  MIPS: Octeon: Serial port fixes for OCTEON simulator.
  MIPS: Octeon: Get rid of early serial.
  MIPS: AR7: prevent race between clock initialization and devices registration
  MIPS: AR7: use ar7_has_high_vlynq() to determine watchdog base address
  MIPS: BCM63xx: Avoid namespace clash on GPIO_DIR_{IN,OUT}
  MIPS: MTX-1: Update defconfig
  MIPS: BCM47xx: Update defconfig
  MIPS: RB532: Update defconfig
  MIPS: AR7: Update defconfig
  RTC: rtc-cmos: Fix binary mode support
  MIPS: Oprofile: Loongson: Cleanup the comments
  MIPS: Oprofile: Loongson: Cleanup of the macros
  MIPS: Oprofile: Loongson: Remove unused variable from loongson2_cpu_setup()
  MIPS: Oprofile: Loongson: Remove useless parentheses
  MIPS: Oprofile: Loongson: Unify macro for setting events
  MIPS: nofpu and nodsp only affect CPU0
  MIPS: Clean up tables for bootmem allocation
  MIPS: Coding style cleanups of access of FCSR rounding mode bits
  MIPS: Loongson 2F: Add gpio/gpioilb support
  ...

MIPS: Use GCC __builtin_prefetch() to implement prefetch().

2010-05-21T20:31:23+00:00

GCC's __builtin_prefetch() was introduced a long time ago, all
supported GCC versions have it.  Lets do what the big boys up in
linux/prefetch.h do, except we use '1' as the third parameter to
provoke 'PREF 0,...'  and 'PREF 1,...' instead of other prefetch
hints.

This allows for better code generation.  In theory the existing
embedded asm could be optimized, but the compiler has these builtins,
so there is really no point.

Signed-off-by: David Daney 
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1235/
Signed-off-by: Ralf Baechle