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2011-07-14tg3: Move power state transitions to init_oneMatt Carlson
The tg3 driver is going to require memory mapped register access much sooner than before. This patch makes sure the device is in the D0 power state as soon as possible, and moves the code that enables the memory arbiter outside tg3_get_eeprom_hw_cfg() where it can be more easily monitored. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-14tg3: Detect APE enabled devs earlierMatt Carlson
The following patch will require the driver to communicate with the APE much sooner than before. This patch make sure the APE registers are memory mapped and that the ENABLE_APE bit is set before the first use. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-14af-packet: fix - avoid reading stale dataChetan Loke
Currently we flush tp_status and then flush the remainder of the header+payload. tp_status should be flushed in the end to avoid stale data being read by user-space. Incorrectly re-ordered barriers in v1. Signed-off-by: Chetan Loke <loke.chetan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-14Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/bluetooth/l2cap_core.c
2011-07-14net: Embed hh_cache inside of struct neighbour.David S. Miller
Now that there is a one-to-one correspondance between neighbour and hh_cache entries, we no longer need: 1) dynamic allocation 2) attachment to dst->hh 3) refcounting Initialization of the hh_cache entry is indicated by hh_len being non-zero, and such initialization is always done with the neighbour's lock held as a writer. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-14ALSA: hda - Fix krealloc() replacement in hda_codec.cTakashi Iwai
It was obviously wrong, grr.... Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-07-14ALSA: hda - Re-add need_dac_fix check for multi-io jacks of Realtek codecsTakashi Iwai
During the rewrite, the check of spec->need_dac_fix and the corresponding num_dacs change was dropped from the channel-mode control. This patch re-adds it, and also enables need_dac_fix for ALC880 as default, as this feature was originally introduced to fix h/w bugs of this chip. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-07-14dt: remove extra xsysace platform_driver registrationGrant Likely
After commit 1c48a5c93, "dt: Eliminate of_platform_{,un}register_driver", the xsysace driver attempts to register two platform_drivers with the same name, which a) doesn't work, and b) isn't necessary. This patch merges the two platform_drivers. Reported-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-14ASoC: wm8900: fix a memory leak if wm8900_set_fll failsAxel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-07-14sched: adjust scheduler cpu power for stolen timeGlauber Costa
This patch makes update_rq_clock() aware of steal time. The mechanism of operation is not different from irq_time, and follows the same principles. This lives in a CONFIG option itself, and can be compiled out independently of the rest of steal time reporting. The effect of disabling it is that the scheduler will still report steal time (that cannot be disabled), but won't use this information for cpu power adjustments. Everytime update_rq_clock_task() is invoked, we query information about how much time was stolen since last call, and feed it into sched_rt_avg_update(). Although steal time reporting in account_process_tick() keeps track of the last time we read the steal clock, in prev_steal_time, this patch do it independently using another field, prev_steal_time_rq. This is because otherwise, information about time accounted in update_process_tick() would never reach us in update_rq_clock(). Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Tested-by: Eric B Munson <emunson@mgebm.net> CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> CC: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-14KVM guest: Steal time accountingGlauber Costa
This patch accounts steal time time in account_process_tick. If one or more tick is considered stolen in the current accounting cycle, user/system accounting is skipped. Idle is fine, since the hypervisor does not report steal time if the guest is halted. Accounting steal time from the core scheduler give us the advantage of direct acess to the runqueue data. In a later opportunity, it can be used to tweak cpu power and make the scheduler aware of the time it lost. [avi: <asm/paravirt.h> doesn't exist on many archs] Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Tested-by: Eric B Munson <emunson@mgebm.net> CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> CC: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-14ia64: add jump labels for paravirtGlauber Costa
Since in a later patch I intend to call jump labels inside CONFIG_PARAVIRT, IA64 would fail to compile if they are not provided. This patch provides those jump labels for the IA64 architecture. Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Isaku Yamahata <yamahata@valinux.co.jp> Acked-by: Rik van Riel <riel@redhat.com> CC: Tony Luck <tony.luck@intel.com> CC: Eddie Dong <eddie.dong@intel.com> CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> CC: Peter Zijlstra <peterz@infradead.org> CC: Anthony Liguori <aliguori@us.ibm.com> CC: Eric B Munson <emunson@mgebm.net> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-14KVM guest: Add a pv_ops stub for steal timeGlauber Costa
This patch adds a function pointer in one of the many paravirt_ops structs, to allow guests to register a steal time function. Besides a steal time function, we also declare two jump_labels. They will be used to allow the steal time code to be easily bypassed when not in use. Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Rik van Riel <riel@redhat.com> Tested-by: Eric B Munson <emunson@mgebm.net> CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> CC: Peter Zijlstra <peterz@infradead.org> CC: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-14KVM: Steal time implementationGlauber Costa
To implement steal time, we need the hypervisor to pass the guest information about how much time was spent running other processes outside the VM, while the vcpu had meaningful work to do - halt time does not count. This information is acquired through the run_delay field of delayacct/schedstats infrastructure, that counts time spent in a runqueue but not running. Steal time is a per-cpu information, so the traditional MSR-based infrastructure is used. A new msr, KVM_MSR_STEAL_TIME, holds the memory area address containing information about steal time This patch contains the hypervisor part of the steal time infrasructure, and can be backported independently of the guest portion. [avi, yongjie: export delayacct_on, to avoid build failures in some configs] Signed-off-by: Glauber Costa <glommer@redhat.com> Tested-by: Eric B Munson <emunson@mgebm.net> CC: Rik van Riel <riel@redhat.com> CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> CC: Peter Zijlstra <peterz@infradead.org> CC: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Yongjie Ren <yongjie.ren@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-14HID: ACRUX - add missing hid_hw_stop() in ax_probe() error pathAxel Lin
hid_hw_stop() must be called in ax_probe() error path if hid_hw_start() was successful. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-07-14ASoC: Log WM8994 FIFO errors from the interruptMark Brown
We should spot them anyway on state changes but logging them gives us better time information about when the misconfiguration happened. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-07-14GFS2: Resolve inode eviction and ail list interaction bugSteven Whitehouse
This patch contains a few misc fixes which resolve a recently reported issue. This patch has been a real team effort and has received a lot of testing. The first issue is that the ail lock needs to be held over a few more operations. The lock thats added into gfs2_releasepage() may possibly be a candidate for replacing with RCU at some future point, but at this stage we've gone for the obvious fix. The second issue is that gfs2_write_inode() can end up calling a glock recursively when called from gfs2_evict_inode() via the syncing code, so it needs a guard added. The third issue is that we either need to not truncate the metadata pages of inodes which have zero link count, but which we cannot deallocate due to them still being in use by other nodes, or we need to ensure that those pages have all made it through the journal and ail lists first. This patch takes the former approach, but the latter has also been tested and there is nothing to choose between them performance-wise. So again, we could revise that decision in the future. Also, the inode eviction process is now better documented. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Tested-by: Bob Peterson <rpeterso@redhat.com> Tested-by: Abhijith Das <adas@redhat.com> Reported-by: Barry J. Marson <bmarson@redhat.com> Reported-by: David Teigland <teigland@redhat.com>
2011-07-14TOMOYO: Update kernel-doc.Tetsuo Handa
Update comments for scripts/kernel-doc and fix some of errors reported by scripts/checkpatch.pl . Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-07-13drm/i915: Add quirk to disable SSC on Lenovo U160 LVDSKeith Packard
We've tried several times to make this machine 'just work', but every patch that does causes many other machines to fail. This adds a quirk which special cases this hardware and forces ssc to be disabled. There's no way to override this from the command line; that would be a significantly more invasive change. This patch fixes #36656 on fdo bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=36656 Signed-off-by: Keith Packard <keithp@keithp.com> References: https://bugs.freedesktop.org/show_bug.cgi?id=36656 Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-07-14drm/radeon: Don't clobber error return value in page flipping cleanup paths.Michel Dänzer
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-07-14drm/radeon: Don't generate new fence for page flip.Michel Dänzer
Use the fence of the new frontbuffer, if any. Generating a new fence could cause us to wait for completely unrelated rendering to finish before performing the flip. Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-07-14Merge branch 'drm-intel-next' of ↵Dave Airlie
ssh://master.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6 into drm-core-next * 'drm-intel-next' of ssh://master.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6: (52 commits) drm/i915: provide module parameter description drm/i915: add module parameter compiler hints drm/i915/bios: Avoid temporary allocation whilst searching for downclock drm/i915: Cache GT fifo count for SandyBridge i915: Fix opregion notifications drm/i915: TVDAC_STATE_CHG does not indicate successful load-detect drm/i915: Select correct pipe during TV detect drm/i915/ringbuffer: Idling requires waiting for the ring to be empty Revert "drm/i915: enable rc6 by default" drm/i915: Clean up i915_driver_load failure path drm/i915: Enable i915 frame buffer compression by default drm/i915: Share the common work of disabling active FBC before updating drm/i915: Perform intel_enable_fbc() from a delayed task drm/i915: Disable FBC across page-flipping drm/i915: Set persistent-mode for ILK/SNB framebuffer compression drm/i915: Use of a CPU fence is mandatory to update FBC regions upon CPU writes drm/i915: Remove vestigial pitch from post-gen2 FBC control routines drm/i915: Replace direct calls to vfunc.disable_fbc with intel_disable_fbc() drm/i915: Only export the generic intel_disable_fbc() interface drm/i915: Enable GPU reset on Ivybridge. ...
2011-07-14Merge branches 'd3cold', 'bugzilla-37412' and 'bugzilla-38152' into releaseLen Brown
2011-07-13ACPI: Fixes device power states array overflowLin Ming
Commit 28c2103 added new state ACPI_STATE_D3_COLD, so the device power states array must be expanded by one also. v2: Use ACPI_D_STATE_COUNT instead of number 5 for the array size. Reported-by: Dan Carpenter <error27@gmail.com> Suggested-by: Oldřich Jedlička <oldium.pro@seznam.cz> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-07-14gpio/da9052: remove a redundant assignment for gpio->da9052Axel Lin
We just set it twice in da9052_gpio_probe. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-13ACPI, APEI, HEST, Detect duplicated hardware error source IDHuang Ying
The firmware on some machine will report duplicated hardware error source ID in HEST. This is considered a firmware bug. To provide better warning message, this patch adds duplicated hardware error source ID detecting and corresponding printk. This patch fixes #37412 on kernel bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=37412 Reported-by: marconifabio@ubuntu-it.org Signed-off-by: Huang Ying <ying.huang@intel.com> Tested-by: Mathias <janedo.spam@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-07-13drm/i915: provide module parameter descriptionBen Widawsky
Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Keith Packard <keithp@keithp.com>
2011-07-13drm/i915: add module parameter compiler hintsBen Widawsky
Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Keith Packard <keithp@keithp.com>
2011-07-13ftrace: Fix dynamic selftest failure on some archsSteven Rostedt
Archs that do not implement CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST, will fail the dynamic ftrace selftest. The function tracer has a quick 'off' variable that will prevent the call back functions from being called. This variable is called function_trace_stop. In x86, this is implemented directly in the mcount assembly, but for other archs, an intermediate function is used called ftrace_test_stop_func(). In dynamic ftrace, the function pointer variable ftrace_trace_function is used to update the caller code in the mcount caller. But for archs that do not have CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST set, it only calls ftrace_test_stop_func() instead, which in turn calls __ftrace_trace_function. When more than one ftrace_ops is registered, the function it calls is ftrace_ops_list_func(), which will iterate over all registered ftrace_ops and call the callbacks that have their hash matching. The issue happens when two ftrace_ops are registered for different functions and one is then unregistered. The __ftrace_trace_function is then pointed to the remaining ftrace_ops callback function directly. This mean it will be called for all functions that were registered to trace by both ftrace_ops that were registered. This is not an issue for archs with CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST, because the update of ftrace_trace_function doesn't happen until after all functions have been updated, and then the mcount caller is updated. But for those archs that do use the ftrace_test_stop_func(), the update is immediate. The dynamic selftest fails because it hits this situation, and the ftrace_ops that it registers fails to only trace what it was suppose to and instead traces all other functions. The solution is to delay the setting of __ftrace_trace_function until after all the functions have been updated according to the registered ftrace_ops. Also, function_trace_stop is set during the update to prevent function tracing from calling code that is caused by the function tracer itself. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-13ftrace: Update filter when tracing enabled in set_ftrace_filter()Steven Rostedt
Currently, if set_ftrace_filter() is called when the ftrace_ops is active, the function filters will not be updated. They will only be updated when tracing is disabled and re-enabled. Update the functions immediately during set_ftrace_filter(). Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-13ftrace: Balance records when updating the hashSteven Rostedt
Whenever the hash of the ftrace_ops is updated, the record counts must be balance. This requires disabling the records that are set in the original hash, and then enabling the records that are set in the updated hash. Moving the update into ftrace_hash_move() removes the bug where the hash was updated but the records were not, which results in ftrace triggering a warning and disabling itself because the ftrace_ops filter is updated while the ftrace_ops was registered, and then the failure happens when the ftrace_ops is unregistered. The current code will not trigger this bug, but new code will. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-13Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: mmc: core: Bus width testing needs to handle suspend/resume
2011-07-14ASoC: SAMSUNG: 24-bit audio playback on Exynos4210Giridhar Maruthy
Using 256fs or 512fs will result in distortion of 24-bit audio samples. This is because the lrclk generated is not proper. Using 384 fs generates proper output. Signed-off-by: Giridhar Maruthy <giridhar.maruthy@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-07-13[media] tuner-core: fix a 2.6.39 regression with mt20xxMauro Carvalho Chehab
As Simon reported, digital TV broke with mt20xx tuner due to commit ad020dc2fe9039628cf6cef42cd1b76531ee8411. The mt20xx tuner passes V4L2_TUNER_DIGITAL_TV to tuner core. However, the check_mode code now doesn't handle it well. Change the logic there to avoid the breakage, and fix a test for analog-only at g_tuner. Reported-by: Simon Arlott <simon@fire.lp0.eu> Tested-by: Simon Arlott <simon@fire.lp0.eu> Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-14sfc: Remove 'Communications' after 'Solarflare' in references to hardwareBen Hutchings
Branding can now be abbreviated. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2011-07-13[media] dvb_frontend: fix race condition in stopping/starting frontendDevin Heitmueller
Attached is a patch which addresses a race condition in the DVB core related to closing/reopening the DVB frontend device in quick succession. This is the reason that devices such as the HVR-1300, HVR-3000, and HVR-4000 have been failing to scan properly under MythTV and w_scan. The gory details of the race are described in the patch. Devin There is a race condition exhibited when channel scanners such as w_scan and MythTV quickly close and then reopen the frontend device node. Under normal conditions, the behavior is as follows: 1. Application closes the device node 2. DVB frontend ioctl calls dvb_frontend_release which sets fepriv->release_jiffies 3. DVB frontend thread *eventually* calls dvb_frontend_is_exiting() which compares fepriv->release_jiffies, and shuts down the thread if timeout has expired 4. Thread goes away 5. Application opens frontend device 6. DVB frontend ioctl() calls ts_bus_ctrl(1) 7. DVB frontend ioctl() creates new frontend thread, which calls dvb_frontend_init(), which has demod driver init() routine setup initial register state for demod chip. 8. Tuning request is issued. The race occurs when the application in step 5 performs the new open() call before the frontend thread is shutdown. In this case the ts_bus_ctrl() call is made, which strobes the RESET pin on the demodulator, but the dvb_frontend_init() function never gets called because the frontend thread hasn't gone away yet. As a result, the initial register config for the demod is *never* setup, causing subsequent tuning requests to fail. If there is time between the close and open (enough for the dvb frontend thread to be torn down), then in that case the new frontend thread is created and thus the dvb_frontend_init() function does get called. The fix is to set the flag which forces reinitialization if we did in fact call ts_bus_ctrl(). This problem has been seen on the HVR-1300, HVR-3000, and HVR-4000, and is likely occuring on other designs as well where ts_bus_ctrl() actually strobes the reset pin on the demodulator. Note that this patch should supercede any patches submitted for the 1300/3000/4000 which remove the code that removes GPIO code in cx8802_dvb_advise_acquire(), which have been circulating by users for some time now... Canonical tracking this issue in Launchpad 439163: Thanks to Jon Sayers from Hauppauge and Florent Audebert from Anevia S.A. for providing hardware to test/debug with. Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com> Cc: Jon Sayers <j.sayers@hauppauge.co.uk> Cc: Florent Audebert <florent.audebert@anevia.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-13[media] media: fix radio-sf16fmr2 build when SND is not enabledRandy Dunlap
When CONFIG_SND is not enabled, radio-sf16fmr2 build fails with: so make this driver depend on SND. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Hans Verkuil <hverkuil@xs4all.nl> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: linux-media@vger.kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-13[CPUFREQ] s5pv210: make needlessly global symbols staticAxel Lin
The following symbols are needlessly defined global: s5pv210_verify_speed s5pv210_getspeed Make them static. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] exynos4210: make needlessly global symbols staticAxel Lin
The following symbols are needlessly defined global: exynos4_verify_speed exynos4_getspeed exynos4_set_clkdiv Make them static. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] S3C6410: Add some lower frequencies for 800MHz base clock operationMark Brown
By extension from the 667MHz based clocks currently supported add 100MHz and 200MHz operating points. Due to a lack of documentation these have not been confirmed as supported but by extension from the existing frequencies they should be OK, and I've given them quite a bit of runtime testing. The major risk is synchronization with the non-ARM clocks but as we can't currently scale the ARM PLL the risk should be relatively low. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] S5PV210: Add reboot notifier to prevent system hangHuisung Kang
When system reboot, the CPUFREQ level should be 800MHz to prevent system lockup. Signed-off-by: Huisung Kang <hs1218.kang@samsung.com> Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] S5PV210: Adjust udelay prior to voltage scaling downTodd Poynor
Voltage scaling accesses the MAX8998 regulators over bit-banged I2C with lots of udelays. In the case of decreasing CPU speed, the number of loops per us for udelay needs to be adjusted prior to decreasing voltage to avoid delaying for up to 10X too long. Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] S5PV210: Lock a mutex while changing the cpu frequencyArve Hjønnevåg
Without this lock the call to change the frequency for suspend could switch to a new frequency while another thread was still changing the cpu voltage. Signed-off-by: Arve Hjønnevåg <arve@android.com> Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] S5PV210: Add pm_notifier to prevent system unstableHuisung Kang
Minimum 800MHz is needed to enter/exit suspend mode due to voltage mismatch. Signed-off-by: Huisung Kang <hs1218.kang@samsung.com> Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] S5PV210: Add arm/int voltage control supportJonghwan Choi
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] S5PV210: Add additional symantics for "relation" in cpufreq with pmHuisung Kang
Relation has an additional symantics other than standard. s5pv310_target funtion have below additional relation. - DISABLE_FURTHER_CPUFREQ : disable further access to target - ENABLE_FURTHER_CPUFRER : enable access to target Signed-off-by: Huisung Kang <hs1218.kang@samsung.com> Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] S3C64xx: Notify transition complete as soon as frequency changedMark Brown
The CPUFREQ_POSTCHANGE notification is used to update things that depend on the system clock rates. Since this may include the interfaces used to talk to the regulators do the notification before we try to update regulators to reflect lowered system clock rate. The voltage scaling is just a power optimisation and may not happen at all so there's no concern about it not having completed. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] S3C6410: Support 800MHz operation in cpufreqMark Brown
At least some newer S3C6410 silicon supports operation up to 800MHz rather than just 667MHz. Unfortunately I don't have access to any of documentation of this other than some running systems, add a new cpufreq table entry for this based on the behaviour of those systems. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] s5pv210-cpufreq.c: Add missing clk_putJulia Lawall
The successive calls to clk_get each call clk_put in the case of failure, but this is not done for subsequent error handling code. The calls to clk_get are moved to the end of the function, and appropriate gotos are added. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression e1,e2; statement S; @@ e1 = clk_get@p1(...); ... when != e1 = e2 when != clk_put(e1) when any if (...) { ... when != clk_put(e1) when != if (...) { ... clk_put(e1) ... } * return@p3 ...; } else S // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>
2011-07-13[CPUFREQ] Move compile for S3C64XX cpufreq to /drivers/cpufreqKukjin Kim
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Dave Jones <davej@redhat.com>