Commits · fbe543b412cef02350fab35526a6d4dc3d20d182 · Kirill Smelkov / linux

01 May, 2008 2 commits

Fix a potential issue in mpc52xx uart driver · fbe543b4

Andrew Liu authored Apr 29, 2008

mpc52xx_uart_int and __uart_put_char both try to acquire the
port->lock. Therefore the function sequence of:

mpc52xx_uart_int--> ...-->flush_to_ldisc-->...-->__uart_put_char

can potentially trigger a deadlock. To avoid this deadlock a fix
similar to that found in the 8250.c serial driver is applied. The
deadlock is avoided by releasing the lock before pushing a buffer
and reacquiring it when completed.
Signed-off-by: Andrew Liu <shengping.liu@windriver.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

fbe543b4

[POWERPC] mpc5200: Allow for fixed speed MII configurations · 80791be1

Grant Likely authored May 01, 2008

Various improvements for configuring the MPC5200 MII link from the
device tree:
* Look for 'current-speed' property for fixed speed MII links
* Look for 'fsl,7-wire-mode' property for boards using the 7 wire mode
* move definition of private data structure out of the header file
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>

80791be1

30 Apr, 2008 9 commits

[POWERPC] Fix crashkernel= handling when no crashkernel= specified · eabd9094

Michael Ellerman authored Apr 30, 2008

Commit edd8ce67 (Use extended crashkernel
command line on ppc64), changed the logic in reserve_crashkernel()
which deals with the crashkernel= command line option.

This introduced a bug in the case when there is no crashkernel= option,
or it is incorrect. We would fall through and calculate the crash_size
based on the existing values in crashk_res. If both start and end are 0,
the default, we calculate the crash_size as 1 byte - which is wrong.

Rework the logic so that we use crashk_res, regardless of whether it's
set by the command line or via the device tree (see prom.c). Then check
if we have an empty range (end == start), and if so make sure to set
both end and start to zero (this is checked in machine_kexec_64.c). Then
we calculate the crash_size once we know we have a non-zero range.

Finally we always want to warn the user if they specify a base != 32MB,
so remove the special case for that in the command line parsing case.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

eabd9094

[POWERPC] Make emergency stack safe for current_thread_info() use · 3243d874

Michael Ellerman authored Apr 30, 2008

The current_thread_info() macro, used by preempt_count(), assumes the
base address and size of the stack are THREAD_SIZE aligned.

The emergency stack currently isn't either of these things, which
could potentially cause problems anytime we're running on the
emergency stack.  That includes when we detect a bad kernel stack
pointer, and also during early_setup_secondary().
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

3243d874

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs · 595f403c
Paul Mackerras authored Apr 30, 2008

595f403c
[POWERPC] spufs: add .gitignore for spu_save_dump.h & spu_restore_dump.h · d0eb801c
Kumar Gala authored Apr 25, 2008
```
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
```
d0eb801c

[POWERPC] spufs: trace spu_acquire_saved events · 3734dfc6

Julio M. Merino Vidal authored Apr 30, 2008

The sputrace module contained a trace entry for spu_acquire_saved, but
this marker was not placed anywhere. Fix this by adding a marker to the
routine.
Signed-off-by: Julio M. Merino Vidal <jmerino@ac.upc.edu>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

3734dfc6

[POWERPC] spufs: fix marker name for find_victim · 8a476d49

Julio M. Merino Vidal authored Apr 30, 2008

Fix a typo in the marker for the find_victim function, which prevented
it from being traced. It previously read find_vitim.
Signed-off-by: Julio M. Merino Vidal <jmerino@ac.upc.edu>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

8a476d49

[POWERPC] spufs: add marker for destroy_spu_context · 53457881

Julio M. Merino Vidal authored Apr 30, 2008

The sputrace module contained a reference to a marker for
destroy_spu_context, but this marker did not appear in the code. Fix
this by adding a marker in the function.
Signed-off-by: Julio M. Merino Vidal <jmerino@ac.upc.edu>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

53457881

[POWERPC] spufs: add sputrace marker parameter names · d6508aaf

Julio M. Merino Vidal authored Apr 30, 2008

The markers facility defines the marker parameters to be of the form
'name %format'. Add parameter names to sputrace, to specify the context
and %spu paramerters,  instead of just specifying the '%format' part.
Signed-off-by: Julio M. Merino Vidal <jmerino@ac.upc.edu>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

d6508aaf

[POWERPC] spufs: add context switch notification log · 5158e9b5

Christoph Hellwig authored Apr 29, 2008

There are userspace instrumentation tools that need to monitor spu
context switches. This patch adds a new file called 'switch_log' to
each spufs context directory that can be used to monitor the context
switches.

Context switch in/out and exit from spu_run are monitored after the
file was first opened and can be read from it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

5158e9b5

29 Apr, 2008 29 commits

[POWERPC] mpc5200: defconfigs for CM5200, Lite5200B, Motion-PRO and TQM5200 · 82225252

Bartlomiej Sieka authored Apr 15, 2008

Board-specific defconfigs based on current mpc5200_defconfig, archival
lite5200_defconfig, and [cm5200|motionpro|tqm5200]_defconfig from the
linux-2.6-denx tree. Kernels build using these defconfigs were verified
to boot with root filesystem mounted over NFS on Motion-PRO, TQM5200
and Lite5200B boards. CM5200 target was not tested due to hardware
unavailability.
Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

82225252

[POWERPC] mpc5200: Switch mpc5200 dts files to dts-v1 format · a2884f37
Grant Likely authored Apr 29, 2008
```
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
```
a2884f37

[POWERPC] mpc5200: Fix FEC error handling on FIFO errors · 8f3ba2dc

Sascha Hauer authored Apr 16, 2008

The error handling for the mpc5200 fec interrupt is broken. The intended
behaviour is like this:

* If one of FEC_IEVENT_RFIFO_ERROR and FEC_IEVENT_XFIFO_ERROR happens,
  the datasheet says (MPC5200B User's Guide R1.2, p. 14-13): "When this
  occurs, software must ensure both the FIFO Controller and BestComm are
  soft-reset".

* On any other error (non-TFINT) interrupt, just issue a debug message.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

8f3ba2dc

[POWERPC] mpc5200: add Phytec pcm030 board support · 106757b3

s.hauer@pengutronix.de authored Apr 25, 2008

Add board support for the Phytec pcm030 mpc5200b based board. It
does not need any platform specific fixups and as such is handled
as a mpc5200 simple platform.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

106757b3

[POWERPC] mpc5200: add gpiolib support for mpc5200 · 3cd2550c

s.hauer@pengutronix.de authored Apr 25, 2008

This patch adds gpiolib support for mpc5200 SOCs.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

3cd2550c

[POWERPC] mpc5200: add interrupt type function · f800ab44

Sascha Hauer authored Apr 16, 2008

Add a set_type function for external (GPIO) interrupts.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

f800ab44

[POWERPC] mpc5200: Fix unterminated of_device_id table · bc775eac

Grant Likely authored Apr 29, 2008

If CONFIG_PPC_MPC5121 is not set, then the of_device_id table for the
mpc5200 serial driver will not get terminated with a NULL entry.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

bc775eac