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2010-05-22Blackfin: acvilon: fix timeout usage for I2CWolfram Sang
The timeout value is in jiffies, so it should be using HZ, not a plain number. As '10000' is ambiguous, 1HZ is used as conservative default. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Valentin Yakovenkov <yakovenkov@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: fix typo in BF537 IRQ commentMichael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: unify duplicate MEM_MT48LC32M8A2_75 kconfig optionsMike Frysinger
Reported-by: Christoph Egger <siccegge@cs.fau.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: set ARCH_KMALLOC_MINALIGNFUJITA Tomonori
Architectures that handle DMA-non-coherent memory need to set ARCH_KMALLOC_MINALIGN to make sure that kmalloc'ed buffer is DMA-safe: the buffer doesn't share a cache with the others. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: use atomic kmalloc in L1 alloc so it too can be atomicMike Frysinger
Some drivers allocate L1 SRAM in atomic contexts, so make sure these functions also use GFP_ATOMIC to avoid BUG()'s. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: another year of changes (update copyright in boot log)Mike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: optimize strncpy a bitRobin Getz
Add a little strncpy optimization which can easily cut boot time by 20%. When the kernel is booting with initramfs, it builds up the filesystem from a cpio archive by calling strncpy_from_user() via fs/namei.c's do_getname() on every file in the archive (which can be lots) with a length of PATH_MAX (1024). This causes the dest of the strncpy to be padded with many NUL bytes. This optimization mostly causes these NUL bytes to be padded with a call to memset() which is already optimized for filling memory quickly, but the hardware loop helps a little bit as well. Boot time measured with 'loglevel=0' so UART speed doesn't get in the way. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: isram: clean up ITEST_COMMAND macro and improve the selftestsMike Frysinger
The IADDR2DTEST() macro had some duplicated logic with bit 11 and some incorrect comments, so scrub all of that. In order to verify these aren't a problem (and won't be in the future), extend the self tests to operate on as much L1 SRAM as possible. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: move string functions to normal lib/ assemblyRobin Getz
Since 'extern inline' doesn't work correctly in the context of the Linux kernel (too many overriding defines), move the string functions to normal lib/ assembly files (like the existing mem funcs). This avoids the forced inline all over the kernel and allows us to place them constantly in L1. This also avoids some module failures when gcc inserts calls to string functions but the kernel build system doesn't fully consult the library archives. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: SIC: cut down on IAR MMR reads a bitMike Frysinger
Tweak the for loops that operate on the SIC IAR system MMRs to avoid re-reading them multiple times in a row. System MMRs are a little slower to access, so avoid the penalty when possible. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: bf537-minotaur: fix build errors due to header changesMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: kgdb: pass up the CC register instead of a 0 stubMike Frysinger
While the CC pseudo register can be deduced from the ASTAT register, make sure we set its value correctly instead of always stubbing it out as 0. GDB itself looks at this pseudo register instead of ASTAT, so we have to supply the right value. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: handle HW errors in the new "FAULT" printing codeRobin Getz
Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: show the whole accumulator in the pseudo DBG insnRobin Getz
Rather than print just part of the accumulator register, show the whole 40 bits. This matches the simulator behavior better. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: support all possible registers in the pseudo instructionsRobin Getz
Rather than decoding just the common R/P registers, handle all of them. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: add support for the DBG (debug output) pseudo insnRobin Getz
Another pseudo insn used by Blackfin simulators. Also factor some now common register lookup code out of the DBGA handlers. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: change the BUG opcode to an unused 16-bit opcodeRobin Getz
The current BUG opcode includes the bit that flags the insn as a 32bit opcode, but it wasn't declaring it as 32bits. So pick an unused 16bit. URL: http://blackfin.uclinux.org/gf/tracker/5973 Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: allow NMI watchdog to be used w/RETN as a scratch regGraf Yang
NMIs are not safe to return from because many anomaly workarounds are implemented by disabling interrupts. The NMI obviously violates this assumption. Since the NMI watchdog never returns, we don't have to worry about it clobbering RETN when it is being used as a scratch register with the exception stack. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-22Blackfin: add support for the DBGA (debug assert) pseudo insnRobin Getz
A few pseudo debug insns exist to make testing of simulators easier. Since these don't actually exist in the hardware, we have to have the exception handler take care of emulating these. This allows sim test cases to be executed unmodified under Linux and thus simplify debugging greatly. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-05-229p: Optimize TCREATE by eliminating a redundant fid clone.Venkateswararao Jujjuri
This patch removes a redundant fid clone on the directory fid and hence reduces a server transaction while creating new filesystem object. Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-05-229p: cleanup: remove unneeded assignmentDan Carpenter
We never use "v9ses" and so we can remove it. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-05-229p: Add mksock supportVenkateswararao Jujjuri
Without this patch, an attempt to mksock will get an EINVAL. Before this patch: [root@localhost 1dir]# mksock mysock mksock: error making mysock: Invalid argument With this patch: [root@localhost 1dir]# mksock mysock [root@localhost 1dir]# ls -l mysock s--------- 1 root root 0 2010-03-31 17:44 mysock Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-05-22fs/9p: Make sure we properly instantiate dentry.Aneesh Kumar K.V
For lookup if we get ENOENT error from the server we still instantiate the dentry. We need to make sure we have dentry operations set in that case so that a later dput on the dentry does the expected. Without the patch we get the below error #ln -sf abc abclink ln: creating symbolic link `abclink': No such file or directory Now on the host do $ touch abclink Guest now gives ENOENT error. # ls ls: cannot access abclink: No such file or directory Debugged-by:Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-05-22uml: Pushdown the bkl from harddog_kern ioctlFrederic Weisbecker
Pushdown the bkl to harddog_ioctl. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Uml <user-mode-linux-devel@lists.sourceforge.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de>
2010-05-22sunrpc: Pushdown the bkl from sunrpc cache ioctlFrederic Weisbecker
Pushdown the bkl to cache_ioctl_pipefs. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Neil Brown <neilb@suse.de> Cc: Nfs <linux-nfs@vger.kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de>
2010-05-22sunrpc: Pushdown the bkl from ioctlFrederic Weisbecker
Pushdown the bkl to rpc_pipe_ioctl. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Neil Brown <neilb@suse.de> Cc: Nfs <linux-nfs@vger.kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de>
2010-05-22autofs4: Pushdown the bkl from ioctlFrederic Weisbecker
Pushdown the bkl to autofs4_root_ioctl. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ian Kent <raven@themaw.net> Cc: Autofs <autofs@linux.kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de>
2010-05-22sh: fix up sh7786 dmaengine build.Paul Mundt
The asm/dmaengine.h header is gone now, update accordingly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: guard cookie consistency across termination in the DMA driverGuennadi Liakhovetski
If all descriptors on a channel are terminated or the channel is released, update the completed cookie counter to match the last cookie. This prevents inconsistency warning on resumed DMA operation. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: prevent the DMA driver from unloading, while in useGuennadi Liakhovetski
This prevents the driver from unloading, while it is in use. Unloading of the driver, while its DMA channels are held, leads to a kernel Oops. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: fix Oops in the serial SCI driverGuennadi Liakhovetski
Fix an Oops, triggering, if the DMA buffer allocation for the Rx channel in sh-sci.c fails. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: allow platforms to specify SD-card supported voltagesGuennadi Liakhovetski
Boards can have different supplied voltages on different SD card slots. This information has to be passed down to the SD/MMC driver. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Ian Molton <ian@mnementh.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22mmc: let MFD's provide supported Vdd card voltages to tmio_mmcGuennadi Liakhovetski
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Ian Molton <ian@mnementh.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: disable SD-card write-protection detection on kfr2r09Guennadi Liakhovetski
kfr2r09 board has a micro-SD card slot, therefore card write-protection detection cannot work there, disable it. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Ian Molton <ian@mnementh.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22mfd: pass platform flags down to the tmio_mmc driverGuennadi Liakhovetski
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Ian Molton <ian@mnementh.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22tmio: add a platform flag to disable card write-protection detectionGuennadi Liakhovetski
Write-protection status is not always available, e.g., micro-SD cards do not have a write-protection switch at all. This patch adds a flag to let platforms force tmio_mmc to consider the card writable. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Ian Molton <ian@mnementh.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22Merge branches 'slab/align', 'slab/cleanups', 'slab/fixes', 'slab/memhotadd' ↵Pekka Enberg
and 'slub/fixes' into slab-for-linus
2010-05-22slub: Use alloc_pages_exact_node() for page allocationMinchan Kim
The alloc_slab_page() in SLUB uses alloc_pages() if node is '-1'. This means that node validity check in alloc_pages_node is unnecessary and we can use alloc_pages_exact_node() to avoid comparison and branch as commit 6484eb3e2a81807722 ("page allocator: do not check NUMA node ID when the caller knows the node is valid") did for the page allocator. Cc: Christoph Lameter <cl@linux-foundation.org> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Minchan Kim <minchan.kim@gmail.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2010-05-22slub: __kmalloc_node_track_caller should trace kmalloc_large_node caseXiaotian Feng
commit 94b528d (kmemtrace: SLUB hooks for caller-tracking functions) missed tracing kmalloc_large_node in __kmalloc_node_track_caller. We should trace it same as __kmalloc_node. Acked-by: David Rientjes <rientjes@google.com> Cc: Matt Mackall <mpm@selenic.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Xiaotian Feng <dfeng@redhat.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2010-05-22slub: Potential stack overflowEric Dumazet
I discovered that we can overflow stack if CONFIG_SLUB_DEBUG=y and use slabs with many objects, since list_slab_objects() and process_slab() use DECLARE_BITMAP(map, page->objects). With 65535 bits, we use 8192 bytes of stack ... Switch these allocations to dynamic allocations. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2010-05-22sh: Add SDHI DMA support to migorGuennadi Liakhovetski
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: Add SDHI DMA support to kfr2r09Guennadi Liakhovetski
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: Add SDHI DMA support to ms7724seGuennadi Liakhovetski
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: Add SDHI DMA support to ecovecGuennadi Liakhovetski
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22mmc: add DMA support to tmio_mmc driver, when used on SuperHGuennadi Liakhovetski
SDHI controllers on SuperH, served by the tmio_mmc driver, can use slave DMA for data transfer. This patch adds support for the dmaengine API to the tmio_mmc driver. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Ian Molton <ian@mnementh.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: prepare the SDHI MFD driver to pass DMA configuration to tmio_mmc.cGuennadi Liakhovetski
Pass DMA slave IDs from platform down to the tmio_mmc driver, to be used for dmaengine configuration. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22mmc: prepare tmio_mmc for passing of DMA configuration from the MFD cellGuennadi Liakhovetski
After this patch, if the "dma" pointer in struct tmio_mmc_data is not NULL, it points to a struct, containing two tokens, that have to be passed to the dmaengine driver for channel configuration. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: add DMA slave definitions to sh7724Guennadi Liakhovetski
Add a list of SCIF and SDHI DMA slave definitions to sh7724. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: add DMA slaves for two SDHI controllers to sh7722Guennadi Liakhovetski
SuperH SDHI controllers can use DMA, add slave definitions to sh7722. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-05-22sh: define DMA slaves per CPU type, remove now redundant headerGuennadi Liakhovetski
Now that DMA slave IDs are only used used in platform specific code and have become opaque cookies for the rest of the code, we can make the, CPU specific too. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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