linux-toradex.git/arch/mips, branch tegra

MIPS: Call oops_enter, oops_exit in die

2011-10-01T19:36:04+00:00

This allows pause_on_oops and mtdoops to work.

Signed-off-by: Nathan Lynch 
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2810/
Signed-off-by: Ralf Baechle

MIPS: Octeon: Enable C0_UserLocal probing.

2011-09-23T23:44:41+00:00

Octeon2 processor cores have a UserLocal register.  Remove the hard
coded negative probe and allow the standard probing to detect this
feature.

Signed-off-by: David Daney 
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2578/
Signed-off-by: Ralf Baechle

MIPS: No branches in delay slots for huge pages in handle_tlbl

2011-09-21T15:54:07+00:00

For the case PM_DEFAULT_MASK == 0, we were placing a branch in the
delay slot of another branch.  This leads to undefined behavior.

Signed-off-by: David Daney 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2775/
Signed-off-by: Ralf Baechle

MIPS: Don't clobber CP0_STATUS value for CONFIG_MIPS_MT_SMTC

2011-09-21T15:54:02+00:00

Reported-by: Edgar E. Iglesias 
Signed-off-by: David Daney 
Patchwork: https://patchwork.linux-mips.org/patch/2753/
Signed-off-by: Ralf Baechle

MIPS: Octeon: Select CONFIG_HOLES_IN_ZONE

2011-09-21T15:53:56+00:00

Current Octeon systems do in fact have holes in their memory zones.
We need to select HOLES_IN_ZONE.  If we do not, some memory
configurations will result in crashes at boot time like this:

.
.
.
CPU 6 Unable to handle kernel paging request at virtual address 0000000000700000, epc == ffffffff8118fe00, ra == ffffffff8118fe9c
Oops[#1]:
Cpu 6
.
.
.
        ...
Call Trace:
[] setup_per_zone_wmarks+0x1b0/0x338
[] init_per_zone_wmark_min+0x64/0xd0
[] do_one_initcall+0x38/0x160
.
.
.

Reported-by: Jason Kwon 
Signed-off-by: David Daney 
To: linux-mips@linux-mips.org
Cc: Jason Kwon 
Patchwork: https://patchwork.linux-mips.org/patch/2724/
Tested-by: Guenter Roeck
Signed-off-by: Ralf Baechle

MIPS: PM: Use struct syscore_ops instead of sysdevs for PM (v2)

2011-09-21T15:53:51+00:00

Convert some MIPS architecture's code to using struct syscore_ops
objects for power management instead of sysdev classes and sysdevs.

This simplifies the code and reduces the kernel's memory footprint.
It also is necessary for removing sysdevs from the kernel entirely in
the future.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Greg Kroah-Hartman 
Acked-and-tested-by: Lars-Peter Clausen 
Signed-off-by: Lars-Peter Clausen 
Cc: linux-kernel@vger.kernel.org
Cc: "Rafael J.  Wysocki" 
Patchwork: http://patchwork.linux-mips.org/patch/2431/
Signed-off-by: Ralf Baechle

MIPS: Compat: Use 32-bit wrapper for compat_sys_futex.

2011-09-21T15:53:44+00:00

We can't trust userspace to pass signed-extend arguments.  Not correctly
sign-extended arguments to futex-wait result in architecturally undefined
operation of 32-bit arithmetic instructions.

For example, if 'val' is too big and bit-31 is 1, the caller may enter
endless loop at:

futex_wait_setup()
{
	...

	if (uval != val) {
		queue_unlock(q, *hb);
		ret = -EWOULDBLOCK;

	...
}

Signed-off-by: Yong Zhang 
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2714/
Signed-off-by: Ralf Baechle

MIPS: Do not use EXTRA_CFLAGS

2011-09-21T15:53:38+00:00

Usage of these flags has been deprecated for nearly 4 years by:

    commit f77bf01425b11947eeb3b5b54685212c302741b8
    Author: Sam Ravnborg 
    Date:   Mon Oct 15 22:25:06 2007 +0200

        kbuild: introduce ccflags-y, asflags-y and ldflags-y

Moreover, these flags (at least EXTRA_CFLAGS) have been documented for command
line use. By default, gmake(1) do not override command line setting, so this is
likely to result in build failure or unexpected behavior.

Replace their usage by Kbuild's `{as,cc,ld}flags-y'.

To: linux-kernel@vger.kernel.org
Cc: Sam Ravnborg 
Patchwork: https://patchwork.linux-mips.org/patch/2710/
Cc: linux-mips@linux-mips.org
Signed-off-by: Arnaud Lacombe 
Signed-off-by: Ralf Baechle

MIPS: Alchemy: DB1200: Disable cascade IRQ in handler

2011-09-21T15:53:32+00:00

Disable the cascade IRQ in the cascade handler.  This is required to
get the DB1300 working, and also gets rid of all spurious interrupts
previously observed on the DB1200; so Config[OD] can be disabled
again for better performance.

Signed-off-by: Manuel Lauss 
To: Linux-MIPS 
Patchwork: https://patchwork.linux-mips.org/patch/2708/
Signed-off-by: Ralf Baechle

MIPS: Lantiq: Fix setting the PCI bus speed on AR9

2011-09-21T15:53:18+00:00

The bits used to set the PCI bus speed on AR9 are slightly different to
those used on Danube.

Signed-off-by: John Crispin 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2614/
Signed-off-by: Ralf Baechle