linux-toradex.git/arch/powerpc/platforms, branch v3.2.28

powerpc/pmac: Fix SMP kernels on pre-core99 UP machines

2012-03-23T18:21:23+00:00

commit 78c5c68a4cf4329d17abfa469345ddf323d4fd62 upstream.

The code for "powersurge" SMP would kick in and cause a crash
at boot due to the lack of a NULL test.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Jeremy Kerr 
Reported-by: Adam Conrad 
Tested-by: Adam Conrad 
Signed-off-by: Greg Kroah-Hartman

powerpc: Fix unpaired probe_hcall_entry and probe_hcall_exit

2012-01-12T19:29:23+00:00

commit e4f387d8db3ba3c2dae4d8bdfe7bb5f4fe1bcb0d upstream.

Unpaired calling of probe_hcall_entry and probe_hcall_exit might happen
as following, which could cause incorrect preempt count.

__trace_hcall_entry => trace_hcall_entry -> probe_hcall_entry =>
get_cpu_var => preempt_disable

__trace_hcall_exit => trace_hcall_exit -> probe_hcall_exit =>
put_cpu_var => preempt_enable

where:
A => B and A -> B means A calls B, but
=> means A will call B through function name, and B will definitely be
called.
-> means A will call B through function pointer, so B might not be
called if the function pointer is not set.

So error happens when only one of probe_hcall_entry and probe_hcall_exit
get called during a hcall.

This patch tries to move the preempt count operations from
probe_hcall_entry and probe_hcall_exit to its callers.

Reported-by: Paul E. McKenney 
Signed-off-by: Li Zhong 
Tested-by: Paul E. McKenney 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman

powerpc/85xx: Fix compile error on p3060_qds.c

2011-11-24T04:55:47+00:00

arch/powerpc/platforms/85xx/p3060_qds.c: In function '__machine_initcall_p3060_qds_declare_of_platform_devices':
arch/powerpc/platforms/85xx/p3060_qds.c:73:1: error: implicit declaration of function 'declare_of_platform_devices'

declare_of_platform_devices should have been corenet_ds_publish_devices.

Signed-off-by: Kumar Gala

powerpc/p3060qds: Fix select of 'MPC8xxx_GPIO'

2011-11-24T04:55:47+00:00

The driver for the Freescale P3060 QDS got added by commit 96cc017c5b
("[...] Add support for P3060QDS board"). Its Kconfig entry selects
MPC8xxx_GPIO. But at the time that driver got added MPC8xxx_GPIO was
already renamed to GPIO_MPC8XXX, by commit c68308dd50c ("gpio: move
mpc8xxx/512x gpio driver to drivers/gpio").

So make this driver select GPIO_MPC8XXX.

Signed-off-by: Paul Bolle 
Acked-by: Wolfram Sang 
Signed-off-by: Kumar Gala

powerpc/ps3: Fix SMP lockdep boot warning

2011-11-16T03:47:54+00:00

Move the PS3 IPI message setup from ps3_smp_setup_cpu() to ps3_smp_probe().

Fixes startup warnings like these:

  ------------[ cut here ]------------
  WARNING: at kernel/lockdep.c:2649
  Modules linked in:
  ...
  ---[ end trace 31fd0ba7d8756001 ]---

Signed-off-by: Geoff Levand 
Signed-off-by: Benjamin Herrenschmidt

powerpc/ps3: Fix lost SMP IPIs

2011-11-16T03:47:54+00:00

Fixes the PS3 bootup hang introduced in 3.0-rc1 by:

  commit 317f394160e9beb97d19a84c39b7e5eb3d7815a
  sched: Move the second half of ttwu() to the remote cpu

Move the PS3's LV1 EOI call lv1_end_of_interrupt_ext() from ps3_chip_eoi()
to ps3_get_irq() for IPI messages.

If lv1_send_event_locally() is called between a previous call to
lv1_send_event_locally() and the coresponding call to
lv1_end_of_interrupt_ext() the second event will not be delivered to the
target cpu.

The PS3's SMP IPIs are implemented using lv1_send_event_locally(), so if two
IPI messages of the same type are sent to the same target in a relatively
short period of time the second IPI event can become lost when
lv1_end_of_interrupt_ext() is called from ps3_chip_eoi().

CC: stable@kernel.org
Signed-off-by: Geoff Levand 
Signed-off-by: Benjamin Herrenschmidt

powerpc/fsl: MCU_MPC8349EMITX wants I2C built-in, modular won't do...

2011-11-16T03:25:19+00:00

Signed-off-by: Al Viro 
Signed-off-by: Benjamin Herrenschmidt

Merge remote-tracking branch 'agust/next' into merge

2011-11-08T03:53:55+00:00

powerpc/ps3: Fix PS3 repository build warnings

2011-11-08T03:51:58+00:00

Fix uninitialized variable warnings in build of repository.c

Signed-off-by: Geoff Levand 
Signed-off-by: Benjamin Herrenschmidt

powerpc/irq: Remove IRQF_DISABLED

2011-11-08T03:51:46+00:00

Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).

So now this flag is a NOOP and can be removed.

Signed-off-by: Yong Zhang 
Acked-by: Arnd Bergmann 
Acked-by: Geoff Levand 
Signed-off-by: Benjamin Herrenschmidt