Commit Graph

233053 Commits

Author SHA1 Message Date
Colin Cross
14133add42 ARM: tegra: clock: Don't BUG on changing an enabled PLL
When updating the CPU PLL frequency, keeping the PLL enabled avoids
ramping the PLL all the way down and back up again.  Remove the BUG_ON
in tegra2_pll_clk_set_rate to allow the rate to change while the PLL
is enabled.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 23:36:50 -08:00
Dima Zavin
2b84cb4faa ARM: tegra: clock: enable clk reset for non-peripheral clocks
Add a new 'reset' clk op. This can be provided for any clock,
not just peripherals.

Signed-off-by: Dima Zavin <dima@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 23:36:49 -08:00
Simon Glass
375b19cd34 ARM: tegra: Fix hang on reboot
This seems to be a regression in 2.6.37.

We cannot use writel() here since the resulting wmb() calls l2x0_cache_sync()
which uses a spinlock and L1 cache may be off at this point.

http://lists.infradead.org/pipermail/linux-arm-kernel/2011-February/041909.html

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 20:04:16 -08:00
Stephen Warren
1ca00347c5 ARM: tegra: APB DMA: Enable clock and remove reset.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 20:04:15 -08:00
Stephen Warren
499ef7a5c4 ARM: tegra: Prevent requeuing in-progress DMA requests
If a request already in the queue is passed to tegra_dma_enqueue_req,
tegra_dma_req.node->{next,prev} will end up pointing to itself instead
of at tegra_dma_channel.list, which is the way a the end-of-list
should be set up. When the DMA request completes and is list_del'd,
the list head will still point at it, yet the node's next/prev will
contain the list poison values. When the next DMA request completes,
a kernel panic will occur when those poison values are dereferenced.

This makes the DMA driver more robust in the face of buggy clients.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-19 14:35:52 -08:00
Colin Cross
fe92a026e3 Merge branch 'tegra-arch' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound-2.6 into outside-for-next 2011-02-19 14:35:16 -08:00
Mike Rapoport
cca414b263 ARM: tegra: add TrimSlice board
Add basic support for CompuLab TrimSlice platform

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10 18:36:51 -08:00
Colin Cross
535371c3fb ARM: tegra: Use writel_relaxed in tegra_init_cache
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10 17:50:43 -08:00
Olof Johansson
f2b6133ffc ARM: tegra: add tegra_defconfig
Adding one single defconfig for the tegra family of boards, to over time
cover the superset of supported platform and drivers.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10 17:50:42 -08:00
Colin Cross
5789fee934 ARM: tegra: dma: Fix critical data corruption bugs
Sometimes, due to high interrupt latency in the continuous mode
of DMA transfer, the half buffer complete interrupt is handled
after DMA has transferred the full buffer.  When this is detected,
stop DMA immediately and restart with the next buffer if the next
buffer is ready.

originally fixed by Victor(Weiguo) Pan <wpan@nvidia.com>

In place of using the simple spin_lock()/spi_unlock() in the
interrupt thread, using the spin_lock_irqsave() and
spin_unlock_irqrestore(). The lock is shared between the normal
process context and interrupt context.

originally fixed by Laxman Dewangan (ldewangan@nvidia.com)

The use of shadow registers caused memory corruption at physical
address 0 because the enable bit was not shadowed, and assuming it
needed to be set would enable an unconfigured dma block.  Most of the
register accesses don't need to know the previous state of the
registers, and the few places that do need to modify only a few bits
in the registers are the same ones that were sometimes incorrectly
setting the enable bit.  This patch convert tegra_dma_update_hardware
to set the entire register, and the other users to read-modify-write,
and drops the shadow registers completely.

Also fixes missing locking in tegra_dma_allocate_channel

Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10 17:50:41 -08:00
Colin Cross
699fe145d6 ARM: tegra: Allow overriding arch_reset
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10 17:50:41 -08:00
Colin Cross
1eb2ecf1d5 ARM: tegra: cpufreq: Disable cpufreq during suspend
On Tegra, calling clk_set_rate on the CPU clock may call into the
regulator API.  If the regulator driver that controls the CPU
voltage rail has been suspended, this can lead to attempted
communication with a hardware block that has already been turned
off.

Adds a SUSPEND_PREPARE notification hook to drop the frequency to
the lowest possible during suspend.

Also adds 216MHz (off of PLLP) as the lowest CPU frequency, which
allows PLLX to be turned off.

Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10 17:50:40 -08:00
Gary King
537f5af0f6 ARM: tegra: iomap: Add missing devices
Adds gart, hdmi, avp, host1x, and pwm controllers to mach/iomap.h

Signed-off-by: Gary King <gking@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10 17:50:23 -08:00
Colin Cross
26d902c0c6 ARM: tegra: irq: Implement retrigger
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-09 22:18:30 -08:00
Colin Cross
3524b70ef3 ARM: tegra: irq: Add support for suspend wake sources
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-09 22:18:21 -08:00
Colin Cross
093617851c ARM: tegra: timer: Add idle and suspend support to timers
Implement read_persistent_clock by reading the Tegra RTC
registers that stay running during suspend.

Save and restore the timer configuration register in
suspend.

Signed-off-by: Colin Cross <ccross@android.com>
2011-02-09 22:17:38 -08:00
Gary King
3c3895b4bf ARM: tegra: pinmux: Add missing drive pingroups and fix suspend
Adds missing drive pingroups, saves all drive pingroups in
suspend, and restores the pinmux registers in the proper order.

Signed-off-by: Gary King <gking@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-09 21:57:02 -08:00
Colin Cross
cea62c878d ARM: tegra: clock: Suspend fixes, and add new clocks
Save and restore pll and osc state during suspend
Add digital audio clocks
Update clk dev associations
Correct max clock frequencies
Add pll_p as additional cpu clock state
Add values to plld table
Fix register offset for sdmmc4 clock
Add blink timer to tegra2_clocks

Signed-off-by: Colin Cross <ccross@android.com>
2011-02-09 21:57:02 -08:00
Colin Cross
2ea67fd145 ARM: tegra: Add prototypes for subsystem suspend functions
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-09 21:57:01 -08:00
Colin Cross
538bd3cc19 ARM: tegra: irqs: Update irq list
Fixes typo in INT_CPU1_PMU_INTR (original fix from Will Deacon)
Adds board irqs

Signed-off-by: Colin Cross <ccross@android.com>
2011-02-09 21:57:01 -08:00
Colin Cross
ce1e326269 ARM: tegra: Add api to control internal powergating
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-09 21:57:00 -08:00
Colin Cross
d377eb0d95 ARM: tegra: Centralize macros to define debug uart base
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-09 21:56:59 -08:00
Linus Torvalds
100b33c8bd Linux 2.6.38-rc4 2011-02-07 16:03:55 -08:00
Linus Torvalds
65d9055ea3 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  ALSA: AACI: allow writes to MAINCR to take effect
  ARM: Update mach-types
  ARM: 6652/1: ep93xx: correct the end address of the AC97 memory resource
  ARM: mxs/imx28: remove now unused clock lookup "fec.0"
  ARM: mxs: fix clock base address missing
  ARM: mxs: acknowledge gpio irq
  ARM: mach-imx/mach-mx25_3ds: Fix section type
  ARM: imx: Add VPR200 and MX51_3DS entries to uncompress.h
  ARM i.MX23: use correct register for setting the rate
  ARM i.MX23/28: remove secondary field from struct clk. It's unused
  ARM i.MX28: use correct register for setting the rate
  ARM i.MX28: fix bit operation
2011-02-07 15:20:11 -08:00
Linus Torvalds
cb5520f02c Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (33 commits)
  Btrfs: Fix page count calculation
  btrfs: Drop __exit attribute on btrfs_exit_compress
  btrfs: cleanup error handling in btrfs_unlink_inode()
  Btrfs: exclude super blocks when we read in block groups
  Btrfs: make sure search_bitmap finds something in remove_from_bitmap
  btrfs: fix return value check of btrfs_start_transaction()
  btrfs: checking NULL or not in some functions
  Btrfs: avoid uninit variable warnings in ordered-data.c
  Btrfs: catch errors from btrfs_sync_log
  Btrfs: make shrink_delalloc a little friendlier
  Btrfs: handle no memory properly in prepare_pages
  Btrfs: do error checking in btrfs_del_csums
  Btrfs: use the global block reserve if we cannot reserve space
  Btrfs: do not release more reserved bytes to the global_block_rsv than we need
  Btrfs: fix check_path_shared so it returns the right value
  btrfs: check return value of btrfs_start_ioctl_transaction() properly
  btrfs: fix return value check of btrfs_join_transaction()
  fs/btrfs/inode.c: Add missing IS_ERR test
  btrfs: fix missing break in switch phrase
  btrfs: fix several uncheck memory allocations
  ...
2011-02-07 14:06:18 -08:00
Linus Torvalds
eee4da2cef Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Fix hcall tracepoint recursion
  powerpc/numa: Fix bug in unmap_cpu_from_node
  powerpc/numa: Disable VPHN on dedicated processor partitions
  powerpc/numa: Add length when creating OF properties via VPHN
  powerpc/numa: Check for all VPHN changes
  powerpc/numa: Only use active VPHN count fields
  powerpc/pseries: Remove unnecessary variable initializations in numa.c
  powerpc/pseries: Fix brace placement in numa.c
  powerpc/pseries: Fix typo in VPHN comments
  powerpc: Fix some 6xx/7xxx CPU setup functions
  powerpc: Pass the right cpu_spec to ->setup_cpu() on 64-bit
  powerpc/book3e: Protect complex macro args in mmu-book3e.h
  powerpc: Fix pfn_valid() when memory starts at a non-zero address
2011-02-07 14:05:38 -08:00
Linus Torvalds
b8f049ae55 Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  arm: omap4: panda: remove usb_nop_xceiv_register(v1)
  OMAP1: Fix non-working LCD on OMAP310
  OMAP3: Devkit8000: Change lcd power pin
  omap1: remove duplicated #include
  arm: mach-omap2: mux: free allocated memory on error exit
  arm: mach-omap2: board-rm680: fix rm680_vemmc regulator constraints
  OMAP: PM: SmartReflex: Fix possible null pointer read access
  OMAP: PM: SmartReflex: Fix possible memory leak
  arm: mach-omap2: voltage: debugfs: fix memory leak
  OMAP3: PM: fix save secure RAM to restore MPU power state
  OMAP: PM: SmartReflex: Add missing IS_ERR test
2011-02-07 14:05:24 -08:00
Linus Torvalds
06262a6b8c Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, nx: Mark the ACPI resume trampoline code as +x
2011-02-07 14:04:43 -08:00
Tetsuo Handa
fb2b2a1d37 CRED: Fix memory and refcount leaks upon security_prepare_creds() failure
In prepare_kernel_cred() since 2.6.29, put_cred(new) is called without
assigning new->usage when security_prepare_creds() returned an error.  As a
result, memory for new and refcount for new->{user,group_info,tgcred} are
leaked because put_cred(new) won't call __put_cred() unless old->usage == 1.

Fix these leaks by assigning new->usage (and new->subscribers which was added
in 2.6.32) before calling security_prepare_creds().

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-02-07 14:04:00 -08:00
Tetsuo Handa
2edeaa34a6 CRED: Fix BUG() upon security_cred_alloc_blank() failure
In cred_alloc_blank() since 2.6.32, abort_creds(new) is called with
new->security == NULL and new->magic == 0 when security_cred_alloc_blank()
returns an error.  As a result, BUG() will be triggered if SELinux is enabled
or CONFIG_DEBUG_CREDENTIALS=y.

If CONFIG_DEBUG_CREDENTIALS=y, BUG() is called from __invalid_creds() because
cred->magic == 0.  Failing that, BUG() is called from selinux_cred_free()
because selinux_cred_free() is not expecting cred->security == NULL.  This does
not affect smack_cred_free(), tomoyo_cred_free() or apparmor_cred_free().

Fix these bugs by

(1) Set new->magic before calling security_cred_alloc_blank().

(2) Handle null cred->security in creds_are_invalid() and selinux_cred_free().

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-02-07 14:04:00 -08:00
Linus Torvalds
257a65d795 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: remove checks for ses->status == CifsExiting
  cifs: add check for kmalloc in parse_dacl
  cifs: don't send an echo request unless NegProt has been done
  cifs: enable signing flag in SMB header when server has it on
  cifs: Possible slab memory corruption while updating extended stats (repost)
  CIFS: Fix variable types in cifs_iovec_read/write (try #2)
  cifs: fix length vs. total_read confusion in cifs_demultiplex_thread
2011-02-07 14:02:06 -08:00
Yan, Zheng
3a90983dbd Btrfs: Fix page count calculation
take offset of start position into account when calculating page count.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-02-07 14:13:51 -05:00
Russell King
1f63b9546a Merge branch 'fixes' 2011-02-07 19:07:10 +00:00
Jeff Layton
d402539b8f cifs: remove checks for ses->status == CifsExiting
ses->status is never set to CifsExiting, so these checks are
always false.

Tested-by: JG <jg@cms.ac>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-02-07 17:25:55 +00:00
Russell King
d8cff1365e Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes 2011-02-07 15:15:41 +00:00
Russell King
7c289385b8 ALSA: AACI: allow writes to MAINCR to take effect
The AACI TRM requires the MAINCR enable bit to be held zero for two
bitclk cycles plus three apb_pclk cycles.  Use a delay of 1us to
ensure this.

Ensure that writes to MAINCR to change the addressed codec only happen
when required, and that they take effect in a similar manner to the
above, otherwise we seem to occasionally have stuck slot busy bits.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-07 15:15:26 +00:00
Russell King
4a683a2c5e ARM: Update mach-types
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-07 09:04:48 +00:00
H. Peter Anvin
d344e38b2c x86, nx: Mark the ACPI resume trampoline code as +x
We reserve lowmem for the things that need it, like the ACPI
wakeup code, way early to guarantee availability.  This happens
before we set up the proper pagetables, so set_memory_x() has no
effect.

Until we have a better solution, use an initcall to mark the
wakeup code executable.

Originally-by: Matthieu Castet <castet.matthieu@free.fr>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Matthias Hopf <mhopf@suse.de>
Cc: rjw@sisk.pl
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <4D4F8019.2090104@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-02-07 09:07:13 +01:00
Anton Blanchard
57cdfdf829 powerpc: Fix hcall tracepoint recursion
Spinlocks on shared processor partitions use H_YIELD to notify the
hypervisor we are waiting on another virtual CPU. Unfortunately this means
the hcall tracepoints can recurse.

The patch below adds a percpu depth and checks it on both the entry and
exit hcall tracepoints.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: stable@kernel.org
2011-02-07 13:06:08 +11:00
Anton Blanchard
429f4d8d20 powerpc/numa: Fix bug in unmap_cpu_from_node
When converting to the new cpumask code I screwed up:

-       if (cpu_isset(cpu, numa_cpumask_lookup_table[node])) {
-               cpu_clear(cpu, numa_cpumask_lookup_table[node]);
+       if (cpumask_test_cpu(cpu, node_to_cpumask_map[node])) {
+               cpumask_set_cpu(cpu, node_to_cpumask_map[node]);

This was introduced in commit 25863de07a (powerpc/cpumask: Convert NUMA code
to new cpumask API)

Fix it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-02-07 13:06:06 +11:00
Anton Blanchard
fe5cfd6355 powerpc/numa: Disable VPHN on dedicated processor partitions
There is no need to start up the timer and monitor topology changes on a
dedicated processor partition, so disable it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-02-07 13:06:04 +11:00
Anton Blanchard
c0e5e46f39 powerpc/numa: Add length when creating OF properties via VPHN
The rest of the NUMA code expects an OF associativity property with
the first cell containing the length. Without this fix all topology changes
cause us to misparse the property and put the cpu into node 0.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-02-07 13:06:03 +11:00
Anton Blanchard
d69043e806 powerpc/numa: Check for all VPHN changes
The hypervisor uses unsigned 1 byte counters to signal topology changes to
the OS. Since they can wrap we need to check for any difference, not just if
the hypervisor count is greater than the previous count.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-02-07 13:06:01 +11:00
Anton Blanchard
5de1669910 powerpc/numa: Only use active VPHN count fields
VPHN supports up to 8 distance fields but the number of entries in
ibm,associativity-reference-points signifies how many are in use.
Don't look at all the VPHN counts, only distance_ref_points_depth
worth.

Since we already cap our distance metrics at MAX_DISTANCE_REF_POINTS,
use that to size the VPHN arrays and add a BUILD_BUG_ON to avoid it growing
larger than the VPHN maximum of 8.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-02-07 13:05:59 +11:00
Jesse Larrew
cd9d6cc726 powerpc/pseries: Remove unnecessary variable initializations in numa.c
Remove unnecessary variable initializations in VPHN functions.

Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-02-07 13:05:36 +11:00
Jesse Larrew
7639adaafb powerpc/pseries: Fix brace placement in numa.c
Fix brace placement in VPHN code.

Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-02-07 12:58:23 +11:00
Jesse Larrew
bd03403ad5 powerpc/pseries: Fix typo in VPHN comments
Correct a spelling error in VPHN comments in numa.c.

Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-02-07 12:58:21 +11:00
Benjamin Herrenschmidt
1f1936ff3f powerpc: Fix some 6xx/7xxx CPU setup functions
Some of those functions try to adjust the CPU features, for example
to remove NAP support on some revisions. However, they seem to use
r5 as an index into the CPU table entry, which might have been right
a long time ago but no longer is. r4 is the right register to use.

This probably caused some off behaviours on some PowerMac variants
using 750cx or 7455 processor revisions.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: stable@kernel.org
2011-02-07 12:57:11 +11:00
Benjamin Herrenschmidt
af9eef3c7b powerpc: Pass the right cpu_spec to ->setup_cpu() on 64-bit
When calling setup_cpu() on 64-bit, we pass a pointer to the
cputable entry we have found. This used to be fine when cur_cpu_spec
was a pointer to that entry, but nowadays, we copy the entry into
a separate variable, and we do so before we call the setup_cpu()
callback. That means that any attempt by that callback at patching
the CPU table entry (to adjust CPU features for example) will patch
the wrong table.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-02-07 12:47:57 +11:00
Scott Wood
b51cbd41a3 powerpc/book3e: Protect complex macro args in mmu-book3e.h
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-02-07 12:47:56 +11:00