Nicolas Pitre [Sat, 6 Sep 2008 01:53:30 +0000 (21:53 -0400)]
[ARM] remove a common set of __virt_to_bus definitions
Let's provide an overridable default instead of having every machine
class define __virt_to_bus and __bus_to_virt to the same thing. What
most platforms are using is bus_addr == phys_addr so such is the default.
One exception is ebsa110 which has no DMA what so ever, so the actual
definition is not important except only for proper compilation. Also
added a comment about the special footbridge bus translation.
Let's also remove comments alluding to set_dma_addr which is not
(and should not) be commonly used.
Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Nicolas Pitre [Fri, 5 Sep 2008 20:05:14 +0000 (16:05 -0400)]
[ARM] unconditionally define __virt_to_phys and __phys_to_virt
There is no machine class overriding this. If non linear translations
are implemented again for some machines then this could be restored at
that time.
Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Nicolas Pitre [Thu, 11 Sep 2008 15:52:02 +0000 (11:52 -0400)]
[ARM] remove bogus #ifdef CONFIG_HIGHMEM in show_pte()
The restriction on !CONFIG_HIGHMEM is unneeded since page tables are
currently never allocated with highmem pages, and actually disable PTE
dump whenever highmem is configured. Let's have a dynamic test to better
describe the current limitation instead.
Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Nicolas Pitre [Fri, 19 Sep 2008 14:43:06 +0000 (10:43 -0400)]
[ARM] prevent the vmalloc cmdline argument from eating all memory
Commit 8d5796d2ec6b5a4e7a52861144e63af438d6f8f7 allows for the vmalloc
area to be resized from the kernel cmdline. Make sure it cannot overlap
with RAM entirely.
Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Nicolas Pitre [Tue, 2 Sep 2008 15:44:21 +0000 (11:44 -0400)]
[ARM] split highmem into its own memory bank
Doing so will greatly simplify the bootmem initialization code as each
bank is therefore entirely lowmem or highmem with no crossing between
those zones.
Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Nicolas Pitre [Mon, 6 Oct 2008 17:24:40 +0000 (13:24 -0400)]
[ARM] rationalize memory configuration code some more
Currently there are two instances of struct meminfo: one in
kernel/setup.c marked __initdata, and another in mm/init.c with
permanent storage. Let's keep only the later to directly populate
the permanent version from arm_add_memory().
Also move common validation tests between the MMU and non-MMU cases
into arm_add_memory() to remove some duplication. Protection against
overflowing the membank array is also moved in there in order to cover
the kernel cmdline parsing path as well.
Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Nicolas Pitre [Tue, 4 Nov 2008 07:42:27 +0000 (02:42 -0500)]
[ARM] fix a couple clear_user_highpage assembly constraints
In all cases the kaddr is assigned an input register even though it is
modified in the assembly code. Let's assign a new variable to the
modified value and mark those inline asm with volatile otherwise they
get optimized away because the output variable is otherwise not used.
Also fix a few conversion errors in copypage-feroceon.c and
copypage-v4mc.c.
Signed-off-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Takashi Iwai [Fri, 28 Nov 2008 14:17:06 +0000 (15:17 +0100)]
ALSA: hda - Don't export symbols when built-in kernel
The global functions in hda_codec.c and other core parts are only
for HD-audio codec and controller drivers. When the HD-audio driver
is built in kernel, all stuff have to be statically linked, thus
we don't need any exports.
This patch introduces a conditional macro to do export only
when needed.
Jan Scholz [Wed, 26 Nov 2008 14:33:45 +0000 (15:33 +0100)]
HID: Apple ALU wireless keyboards are bluetooth devices
While parsing 'hid_blacklist' in the apple alu wireless keyboard is not found.
This happens because in the blacklist it is declared with HID_USB_DEVICE
although the keyboards are really bluetooth devices. The same holds for
'apple_devices' list.
This patch fixes it by changing HID_USB_DEVICE to HID_BLUETOOTH_DEVICE in those
two lists.
Signed-off-by: Jan Scholz <Scholz@fias.uni-frankfurt.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Ingo Molnar [Thu, 27 Nov 2008 13:41:21 +0000 (14:41 +0100)]
x86: ret_from_fork - get rid of jump back
Impact: remove dead code
If we take a closer look at the rff_trace/rff_action ret_from_fork code,
we have to realize that it does all the wrong things: for example it
checks the TIF flag - while later on jumping back to the ret-from-syscall
path - duplicating the check needlessly.
But checking for _TIF_SYSCALL_TRACE is completely unnecessary here because
we clear that flag for every freshly forked task. So the whole "tracing"
code here, for which there is a out of line jump optimization that makes
it even harder to read, is in reality completely dead code ...
Ingo Molnar [Fri, 28 Nov 2008 14:00:37 +0000 (15:00 +0100)]
Merge branch 'x86/debug' into x86/irq
We merge this branch because x86/debug touches code that we started
cleaning up in x86/irq. The two branches started out independent,
but as unexpected amount of activity went into x86/irq, they became
dependent. Resolve that by this cross-merge.
Steven Rostedt [Wed, 26 Nov 2008 20:54:46 +0000 (15:54 -0500)]
powerpc/ppc32: static ftrace fixes for PPC32
Impact: fix for PowerPC 32 code
There were some early init code that was not safe for static
ftrace to boot on my PowerBook. This code must only use relative
addressing, and static mcount performs a compare of the
ftrace_trace_function pointer, and gets that with an absolute address.
In the early init boot up code, this will cause a fault.
This patch removes tracing from the files containing the offending
functions.
Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Steven Rostedt [Tue, 25 Nov 2008 22:06:19 +0000 (14:06 -0800)]
powerpc: ftrace, use create_branch
Impact: clean up
Paul Mackerras pointed out that the code to determine if the branch
can reach the destination is incorrect. Michael Ellerman suggested
to pull out the code from create_branch and use that.
Simply using create_branch is probably the best.
Reported-by: Michael Ellerman <michael@ellerman.id.au> Reported-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Steven Rostedt [Tue, 25 Nov 2008 14:39:18 +0000 (06:39 -0800)]
powerpc: ftrace, fix cast aliasing and add code verification
Impact: clean up and robustness addition
This patch addresses the comments made by Paul Mackerras.
It removes the type casting between unsigned int and unsigned char
pointers, and replaces them with a use of all unsigned int.
Verification that the jump is indeed made to a trampoline has also
been added.
Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Steven Rostedt [Thu, 20 Nov 2008 21:18:55 +0000 (13:18 -0800)]
powerpc: ftrace, do nothing in mcount call for dyn ftrace
Impact: quicken mcount calls that are not replaced by dyn ftrace
Dynamic ftrace no longer does on the fly recording of mcount locations.
The mcount locations are now found at compile time. The mcount
function no longer needs to store registers and call a stub function.
It can now just simply return.
Since there are some functions that do not get converted to a nop
(.init sections and other code that may disappear), this patch should
help speed up that code.
Also, the stub for mcount on PowerPC 32 can not be a simple branch
link register like it is on PowerPC 64. According to the ABI specification:
"The _mcount routine is required to restore the link register from
the stack so that the profiling code can be inserted transparently,
whether or not the profiled function saves the link register itself."
This means that we must restore the link register that was used
to make the call to mcount. The minimal mcount function for PPC32
ends up being:
Where we move the link register used to call mcount into the
ctr register, and then restore the link register from the stack.
Then we use the ctr register to jump back to the mcount caller.
The r0 register is free for us to use.
Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Liming Wang [Fri, 28 Nov 2008 01:52:40 +0000 (09:52 +0800)]
softirq: remove useless function __local_bh_enable
Impact: remove unused code
__local_bh_enable has been replaced with _local_bh_enable.
As comments says "it always nests inside local_bh_enable() sections"
has not been valid now. Also there is no reason to use __local_bh_enable
anywhere, so we can remove this useless function.
Signed-off-by: Liming Wang <liming.wang@windriver.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Patrick McHardy [Fri, 28 Nov 2008 11:05:19 +0000 (03:05 -0800)]
netlink: allow empty nested attributes
validate_nla() currently doesn't allow empty nested attributes. This
makes userspace code unnecessarily complicated when starting and ending
the nested attribute is done by generic upper level code and the inner
attributes are dumped by a module.
Add a special case to accept empty nested attributes. When the nested
attribute is non empty, the same checks as before are performed.
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Fri, 31 Oct 2008 15:08:35 +0000 (15:08 +0000)]
[ARM] copypage: provide our own copy_user_highpage()
We used to override the copy_user_page() function. However, this
is not only inefficient, it also causes additional complexity for
highmem support, since we convert from a struct page to a kernel
direct mapped address and back to a struct page again.
Moreover, with highmem support, we end up pointlessly setting up
kmap entries for pages which we're going to remap. So, push the
kmapping down into the copypage implementation files where it's
required.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Thu, 27 Nov 2008 11:13:58 +0000 (11:13 +0000)]
Allow architectures to override copy_user_highpage()
With aliasing VIPT cache support, the ARM implementation of
clear_user_page() and copy_user_page() sets up a temporary kernel space
mapping such that we have the same cache colour as the userspace page.
This avoids having to consider any userspace aliases from this operation.
However, when highmem is enabled, kmap_atomic() have to setup mappings.
The copy_user_highpage() and clear_user_highpage() call these functions
before delegating the copies to copy_user_page() and clear_user_page().
The effect of this is that each of the *_user_highpage() functions setup
their own kmap mapping, followed by the *_user_page() functions setting
up another mapping. This is rather wasteful.
Thankfully, copy_user_highpage() can be overriden by architectures by
defining __HAVE_ARCH_COPY_USER_HIGHPAGE. However, replacement of
clear_user_highpage() is more difficult because its inline definition
is not conditional. It seems that you're expected to define
__HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE and provide a replacement
__alloc_zeroed_user_highpage() implementation instead.
The allocation itself is fine, so we don't want to override that. What
we really want to do is to override clear_user_highpage() with our own
version which doesn't kmap_atomic() unnecessarily.
Other VIPT architectures (PARISC and SH) would also like to override
this function as well.
Acked-by: Hugh Dickins <hugh@veritas.com> Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Al Viro [Thu, 27 Nov 2008 23:34:07 +0000 (15:34 -0800)]
ixgbe: section fixes
ixgbe_init_interrupt_scheme() is called from ixgbe_resume(). Build that
with CONFIG_PM and without CONFIG_HOTPLUG and you've got a problem.
Several helpers called by it also are misannotated __devinit.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Randy Dunlap [Thu, 27 Nov 2008 23:30:53 +0000 (15:30 -0800)]
sctp: fix missing label when PROC_FS=n
Fix missing label when CONFIG_PROC_FS=n:
net/sctp/protocol.c: In function 'sctp_proc_init':
net/sctp/protocol.c:106: error: label 'out_nomem' used but not defined
make[3]: *** [net/sctp/protocol.o] Error 1
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jan Kara [Tue, 23 Sep 2008 16:24:08 +0000 (18:24 +0200)]
udf: Fix BUG_ON() in destroy_inode()
udf_clear_inode() can leave behind buffers on mapping's i_private list (when
we truncated preallocation). Call invalidate_inode_buffers() so that the list
is properly cleaned-up before we return from udf_clear_inode(). This is ugly
and suggest that we should cleanup preallocation earlier than in clear_inode()
but currently there's no such call available since drop_inode() is called under
inode lock and thus is unusable for disk operations.
Takashi Iwai [Thu, 27 Nov 2008 14:47:11 +0000 (15:47 +0100)]
ALSA: hda - Modularize HD-audio driver
Split the monolithc HD-audio driver into several pieces:
- snd-hda-intel HD-audio PCI controller driver; loaded via udev
- snd-hda-codec HD-audio codec bus driver
- snd-hda-codec-* Specific HD-audio codec drivers
When built as modules, snd-hda-codec (that is invoked by snd-hda-intel)
looks up the codec vendor ID and loads the corresponding codec module
automatically via request_module().
When built in a kernel, each codec drivers are statically hooked up
before probing the PCI.
This patch adds appropriate EXPORT_SYMBOL_GPL()'s and the module
information for each driver, and driver-linking codes between
codec-bus and codec drivers.
TODO:
- Avoid EXPORT_SYMBOL*() when built-in kernel
- Restore __devinit appropriately depending on the condition
The function snd_mixart_create creates a link between mgr and card that
allows snd_mixart_free to free card as well. But if snd_mixart_create
fails, then the link has not been created and card has to be freed explicitly.
The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
statement S,S1;
position p1,p2,p3;
expression E,E1;
type T,T1;
expression *ptr != NULL;
@@
(
if ((x@p1 = snd_card_new(...)) == NULL) S
|
x@p1 = snd_card_new(...);
)
... when != snd_card_free(...,(T)x,...)
when != if (...) { <+... snd_card_free(...,(T)x,...) ...+> }
when != true x == NULL || ...
when != x = E
when != E = (T)x
when any
(
if (x == NULL || ...) S1
|
if@p2 (...) {
... when != snd_card_free(...,(T1)x,...)
when != if (...) { <+... snd_card_free(...,(T1)x,...) ...+> }
when != x = E1
when != E1 = (T1)x
(
return \(0\|<+...x...+>\|ptr\);
|
return@p3 ...;
)
}
)
Takashi Iwai [Thu, 27 Nov 2008 13:17:01 +0000 (14:17 +0100)]
ALSA: hda - Fix PCM reconfigure
The reconfiguration of PCM affected all PCM streams on the bus, but
this this should be done rather only for the target codec.
This patch does the following:
- introduce bitmap indicating the PCM device usages on a hda_bus
- refactor the PCM build functions
- fix __devinit prefix in some fucntions
- add a proper ifdef around HDA-reconfig-specific functions
Russell King [Sat, 8 Nov 2008 20:48:27 +0000 (20:48 +0000)]
[ARM] sa1100: match clock by dev_name(dev)
Continuing the move away from implementations which give an excuse
for other bad implementations, convert SA1100 to lookup its singular
clock by dev_name(dev) rather than by id.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Sun, 26 Oct 2008 10:55:14 +0000 (10:55 +0000)]
[ARM] Arrange for platforms to select appropriate CPU support
Rather than:
config CPU_BLAH
bool
depends on ARCH_FOO || MACH_BAR
default y if ARCH_FOO || MACH_BAR
arrange for ARCH_FOO and MACH_BAR to select CPU_BLAH directly.
Acked-by: Nicolas Pitre <nico@marvell.com> Acked-by: Andrew Victor <linux@maxim.org.za> Acked-by: Brian Swetland <swetland@google.com> Acked-by: Eric Miao <eric.miao@marvell.com> Acked-by: Nicolas Bellido <ml@acolin.be> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Mon, 27 Oct 2008 11:24:09 +0000 (11:24 +0000)]
[ARM] remove memzero()
As suggested by Andrew Morton, remove memzero() - it's not supported
on other architectures so use of it is a potential build breaking bug.
Since the compiler optimizes memset(x,0,n) to __memzero() perfectly
well, we don't miss out on the underlying benefits of memzero().
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Joerg Roedel [Thu, 20 Nov 2008 19:49:56 +0000 (20:49 +0100)]
x86: always define DECLARE_PCI_UNMAP* macros
Impact: fix boot crash on AMD IOMMU if CONFIG_GART_IOMMU is off
Currently these macros evaluate to a no-op except the kernel is compiled
with GART or Calgary support. But we also need these macros when we have
SWIOTLB, VT-d or AMD IOMMU in the kernel. Since we always compile at
least with SWIOTLB we can define these macros always.
This patch is also for stable backport for the same reason the SWIOTLB
default selection patch is.
Takashi Iwai [Thu, 27 Nov 2008 11:40:13 +0000 (12:40 +0100)]
ALSA: hda - make some functions static
Minor clean ups: move snd_hda_codecs_inuse() into hda_intel.c and
make static. Also, make snd_hda_query_supported_pcm() static
as it's used only in hda_codec.c.
i386: get rid of the use of KPROBE_ENTRY / KPROBE_END
entry_32.S is now the only user of KPROBE_ENTRY / KPROBE_END,
treewide. This patch reorders entry_64.S and explicitly generates
a separate section for functions that need the protection. The
generated code before and after the patch is equal.
The KPROBE_ENTRY and KPROBE_END macro's are removed too.
Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
x86_64: get rid of the use of KPROBE_ENTRY / KPROBE_END
Impact: clean up assembly macros and annotations - with some object impact
entry_64.S is the only user of KPROBE_ENTRY / KPROBE_END on
x86_64. This patch reorders entry_64.S and explicitly generates
a separate section for functions that need the protection. The
generated code before and after the patch is equal.
Implicitly changing sections in assembly files makes it more
difficult to follow why the assembler is doing certain things.
For example,
.p2align 5
KPROBE_ENTRY(...)
was not doing what you would expect. Other section changes
(__ex_table, .fixup, .init.rodata) are done explicitly already.
Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Heiko Carstens [Thu, 27 Nov 2008 10:05:58 +0000 (11:05 +0100)]
[S390] Fix alignment of initial kernel stack.
We need an alignment of 16384 bytes for the initial kernel stack if
the kernel is configured for 16384 bytes stacks but the linker script
currently guarantees only an alignment of 8192 bytes.
So fix this and simply use THREAD_SIZE as alignment value which will
always do the right thing.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The faulting instruction is the storage key operation (iske) in
ptep_rcp_copy (called by pte_clear, called by unmap_vmas). iske
reads dirty and reference bit information for a physical page and
requires a valid physical address. Since we are in pte_clear, we
cannot rely on the pte containing a valid address. Fortunately we
dont need these information in pte_clear - after all there is no
mapping. The best fix is to remove the needless call to ptep_rcp_copy
that contains the iske.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
CONFIG_PRINTK_TIME reveals that sched_clock has a wrong offset during boot:
..
[ 0.000000] Movable zone: 0 pages used for memmap
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 775679
[ 0.000000] Kernel command line: dasd=4b6c root=/dev/dasda1 ro noinitrd
[ 0.000000] PID hash table entries: 4096 (order: 12, 32768 bytes)
[6920575.975232] console [ttyS0] enabled
[6920575.987586] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes)
[6920575.991404] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes)
..
The s390 implementation of sched_clock uses the store clock instruction and
subtracts jiffies_timer_cc.
jiffies_timer_cc is a local variable in arch/s390/kernel/time.c and only used
for sched_clock and monotonic clock. For historical reasons there is an offset
on that value. With todays code this offset is unnecessary. By removing that
offset we can get a sched_clock which returns the nanoseconds after time_init.
This improves CONFIG_PRINTK_TIME.
Since sched_clock is the only user, I have also renamed jiffies_timer_cc to
sched_clock_base_cc. In addition, the local variable init_timer_cc is redundant
and can be romved as well.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
syscall_get_nr() currently returns a valid result only if the call
chain of the traced process includes do_syscall_trace_enter(). But
collect_syscall() can be called for any sleeping task, the result of
syscall_get_nr() in general is completely bogus.
To make syscall_get_nr() work for any sleeping task the traps field
in pt_regs is replace with svcnr - the system call number the process
is executing. If svcnr == 0 the process is not on a system call path.
The syscall_get_arguments and syscall_set_arguments use regs->gprs[2]
for the first system call parameter. This is incorrect since gprs[2]
may have been overwritten with the system call number if the call
chain includes do_syscall_trace_enter. Use regs->orig_gprs2 instead.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
tracing/function-graph-tracer: enhancements for the trace output
Impact: enhance the output of the graph-tracer
This patch applies some ideas of Ingo Molnar and Steven Rostedt.
* Output leaf functions in one line with parenthesis, semicolon and duration
output.
* Add a second column (after cpu) for an overhead sign.
if duration > 100 us, "!"
if duration > 10 us, "+"
else " "
* Print output in us with remaining nanosec: u.n
* Print duration on the right end, following the indentation of the functions.
Use also visual clues: "-" on entry call (no duration to output) and "+" on
return (duration output).
The name of the tracer has been fixed as well: function-branch becomes
function_branch.
Here is an example of the new output:
CPU[000] dequeue_entity() { -
CPU[000] update_curr() { -
CPU[000] update_min_vruntime(); + 0.512 us
CPU[000] } + 1.504 us
CPU[000] clear_buddies(); + 0.481 us
CPU[000] update_min_vruntime(); + 0.504 us
CPU[000] } + 4.557 us
CPU[000] hrtick_update() { -
CPU[000] hrtick_start_fair(); + 0.489 us
CPU[000] } + 1.443 us
CPU[000] + } + 14.655 us
CPU[000] + } + 15.678 us
CPU[000] + } + 16.686 us
CPU[000] msecs_to_jiffies(); + 0.481 us
CPU[000] put_prev_task_fair(); + 0.504 us
CPU[000] pick_next_task_fair(); + 0.482 us
CPU[000] pick_next_task_rt(); + 0.504 us
CPU[000] pick_next_task_fair(); + 0.481 us
CPU[000] pick_next_task_idle(); + 0.489 us
CPU[000] _spin_trylock(); + 0.655 us
CPU[000] _spin_unlock(); + 0.609 us
[MTD] [NAND] fsl_upm: fix build problem with 2.6.28-rc2
The patch fixes following build error:
CC drivers/mtd/nand/fsl_upm.o
drivers/mtd/nand/fsl_upm.c: In function 'fun_chip_init':
drivers/mtd/nand/fsl_upm.c:168: warning: passing argument 2 of 'of_mtd_parse_partitions' from incompatible pointer type
drivers/mtd/nand/fsl_upm.c:168: warning: passing argument 3 of 'of_mtd_parse_partitions' from incompatible pointer type
drivers/mtd/nand/fsl_upm.c:168: error: too many arguments to function 'of_mtd_parse_partitions'
make[1]: *** [drivers/mtd/nand/fsl_upm.o] Error 1
While at it, also add a check for the of_mtd_parse_partitions() return
value.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Juha Yrjola [Fri, 14 Nov 2008 13:22:00 +0000 (15:22 +0200)]
OMAP: HSMMC: Implement scatter-gather emulation
Instead of using the bounce buffer, using scatter-gather emulation
(as in the OMAP1/2 MMC driver) removes the need of one extra memory
copy and improves performance.
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Jarkko Lavinen [Fri, 24 Oct 2008 13:30:26 +0000 (16:30 +0300)]
OMAP: HSMMC: Make fclk disable request driven.
Start idle timer only at the end of request or request like operation
such card detect, set_ios, probe, or resume. This will ensure the fclk is
disable quickly after the operation is done, but never too early.
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
projects / linux-2.6-omap-h63xx.git / log