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2012-07-11powerpc/kvm: Fix "PR" KVM implementation of H_CEDEBenjamin Herrenschmidt
H_CEDE should enable the vcpu's MSR:EE bit. It does on "HV" KVM (it's burried in the assembly code though) and as far as I can tell, qemu does it as well. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2012-07-11regulator: s2mps11: Add samsung s2mps11 regulator driverSangbeom Kim
This patch add Samsung S2MPS11 regulator driver. The S2MPS11 can support 10 Bucks and 38 LDOs and RTC. Especially, S2MPS11 is designed for high performance Samsung application processor. Signed-off-by: Sangbeom Kim <sbkim73@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-11Merge tag 'imx-soc' of git://git.pengutronix.de/git/imx/linux-2.6 into next/socArnd Bergmann
From Sascha Hauer <s.hauer@pengutronix.de>: ARM i.MX SoC updates for 3.6 * tag 'imx-soc' of git://git.pengutronix.de/git/imx/linux-2.6: ARM: imx: fix mx51 ehci setup errors ARM: imx: make ehci power/oc polarities configurable ARM: imx: add rtc support to mx35_3ds ARM: imx: enable support for mx35 rtc ARM: imx: fix i.MX35 CPU architecture ARM: i.MX51 iomux: added missing pin definitions Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-11Merge tag 'v3.5-rc6' into next/socArnd Bergmann
Linux 3.5-rc6 Dependency for imx/soc changes
2012-07-11PM / Domains: Replace plain integer with NULL pointer in domain.c fileSachin Kamat
Fixes the following sparse warning: drivers/base/power/domain.c:1679:55: warning: Using plain integer as NULL pointer Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-11KVM: Fix device assignment threaded irq handlerAlex Williamson
The kernel no longer allows us to pass NULL for the hard handler without also specifying IRQF_ONESHOT. IRQF_ONESHOT imposes latency in the exit path that we don't need for MSI interrupts. Long term we'd like to inject these interrupts from the hard handler when possible. In the short term, we can create dummy hard handlers that return us to the previous behavior. Credit to Michael for original patch. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=43328 Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-11Input: xpad - add signature for Razer Onza Tournament EditionIlia Katsnelson
Signed-off-by: Ilia Katsnelson <k0009000@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-07-11Input: xpad - handle all variations of Mad Catz Beat PadYuri Khan
The device should be handled by xpad driver instead of generic HID driver. Signed-off-by: Yuri Khan <yurivkhan@gmail.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-07-11Merge tag 'v3.5-rc6' into x86/mceIngo Molnar
Merge Linux 3.5-rc6 before merging more code. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-07-10bnx2: Fix bug in bnx2_free_tx_skbs().Michael Chan
In rare cases, bnx2x_free_tx_skbs() can unmap the wrong DMA address when it gets to the last entry of the tx ring. We were not using the proper macro to skip the last entry when advancing the tx index. Reported-by: Zongyun Lai <zlai@vmware.com> Reviewed-by: Jeffrey Huang <huangjw@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10IPoIB: fix skb truesize underestimatiomEric Dumazet
Or Gerlitz reported triggering of WARN_ON_ONCE(delta < len); in skb_try_coalesce() This warning tracks drivers that incorrectly set skb->truesize IPoIB indeed allocates a full page to store a fragment, but only accounts in skb->truesize the used part of the page (frame length) This patch fixes skb truesize underestimation, and also fixes a performance issue, because RX skbs have not enough tailroom to allow IP and TCP stacks to pull their header in skb linear part without an expensive call to pskb_expand_head() Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Or Gerlitz <ogerlitz@mellanox.com> Cc: Erez Shitrit <erezsh@mellanox.com> Cc: Shlomo Pongartz <shlomop@mellanox.com> Cc: Roland Dreier <roland@purestorage.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10net: Fix memory leak - vlan_info structAmir Hanania
In driver reload test there is a memory leak. The structure vlan_info was not freed when the driver was removed. It was not released since the nr_vids var is one after last vlan was removed. The nr_vids is one, since vlan zero is added to the interface when the interface is being set, but the vlan zero is not deleted at unregister. Fix - delete vlan zero when we unregister the device. Signed-off-by: Amir Hanania <amir.hanania@intel.com> Acked-by: John Fastabend <john.r.fastabend@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10Merge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-mergeDavid S. Miller
Included changes: - fix a bug generated by the wrong interaction between the GW feature and the Bridge Loop Avoidance
2012-07-10mmc: dt: Add reg/interrupts to mmc.txt for clarity.Chris Ball
Even though these aren't parsed by the MMC driver, make clear that they're required by the OF core. (Also, a few typo fixes.) Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10mmc: dt: Deduplicate binding docs by referencing mmc.txtChris Ball
Now that we have common bindings for MMC, rewrite the individual bindings to inherit from mmc.txt and describe their differences. Acked-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10mmc: core: Export regulator_* functions as GPLChris Ball
The regulator API functions we're wrapping are exported as GPL, so our wrappers for the same functions should be too. Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10mmc: block: replace __blk_end_request() with blk_end_request()Subhash Jadavani
For completing any block request, MMC block driver is calling: spin_lock_irq(queue) __blk_end_request() spin_unlock_irq(queue) But if we analyze the sources of latency in kernel using ftrace, __blk_end_request() function at times may take up to 6.5ms with spinlock held and irq disabled. __blk_end_request() calls couple of functions and ftrace output shows that blk_update_bidi_request() function is almost taking 6ms. There are 2 function to end the current request: ___blk_end_request() and blk_end_request(). Both these functions do same thing except that blk_end_request() function doesn't take up the spinlock while calling the blk_update_bidi_request(). This patch replaces all __blk_end_request() calls with blk_end_request() and __blk_end_request_all() calls with blk_end_request_all(). Testing done: 20 process concurrent read/write on sd card and eMMC. Ran this test for almost a day on multicore system and no errors observed. This change is not meant for improving MMC throughput; it's basically about becoming fair to other threads/interrupts in the system. By holding spin lock and interrupts disabled for longer duration, we won't allow other threads/interrupts to run at all. Actually slight performance degradation at file system level can be expected as we are not holding the spin lock during blk_update_bidi_request() which means our mmcqd thread may get preempted for other high priority thread or any interrupt in the system. These are performance numbers (100MB file write) with eMMC running in DDR mode: Without this patch: Name of the Test Value Unit LMDD Read Test 53.79 MBPS LMDD Write Test 18.86 MBPS IOZONE Read Test 51.65 MBPS IOZONE Write Test 24.36 MBPS With this patch: Name of the Test Value Unit LMDD Read Test 52.94 MBPS LMDD Write Test 16.70 MBPS IOZONE Read Test 52.08 MBPS IOZONE Write Test 23.29 MBPS Read numbers are fine. Write numbers are bit down (especially LMDD write), may be because write requests normally have large transfer size and which means there are chances that while mmcq is executing blk_update_bidi_request(), it may get interrupted by interrupts or other high priority thread. Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10mmc: core: Fix the HPI execution sequenceVenkatraman S
mmc_execute_hpi should send the HPI command only once, and only if the card is in PRG state. According to eMMC spec, the command's completion time is not dependent on OUT_OF_INTERRUPT_TIME. Only the transition out of PRG STATE is guarded by OUT_OF_INTERRUPT_TIME - which is defined to begin at the end of sending the command itself. Specify the default timeout for the actual sending of HPI command, and then use OUT_OF_INTERRUPT_TIME to wait for the transition out of PRG state. Reported-by: Alex Lemberg <Alex.Lemberg@sandisk.com> Signed-off-by: Venkatraman S <svenkatr@ti.com> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10mmc: extend and rename cd-gpio helpers to handle more slot GPIO functionsGuennadi Liakhovetski
GPIOs can be used in MMC/SD-card slots not only for hotplug detection, but also to implement the write-protection pin. Rename cd-gpio helpers to slot-gpio to make addition of further slot GPIO functions possible. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10mmc: tmio: use MMC opcode defines instead of numbersGuennadi Liakhovetski
mmc.h defines macros for most frequently used MMC opcodes. Use them instead of hard-coded numbers. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10mmc: cd-gpio: pass IRQF_ONESHOT to request_threaded_irq()Guennadi Liakhovetski
Fix a boot regression on Mackerel boards with sh_mobile_sdhi in existing kernels causing: genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq XXX caused by 1c6c6952 (genirq: Reject bogus threaded irq requests). This is backported from Guennadi's patch: "mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions" Reported-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10mmc: core: Revert "skip card initialization if power class selection fails"Venkatraman S
This reverts commit 3d93576e(skip card initialization if power class selection fails). Problem has been reported when this is used with eMMC4.41 card with Tegra Platform. Till the issue is root caused, bus width selection failure should not be treated as fatal. Reported-by: Marc Dietrich <marvin24@gmx.de> Signed-Off-by: Venkatraman S <svenkatr@ti.com> CC: Ulf Hansson <ulf.hansson@stericsson.com> CC: Subhash Jadavani <subhashj@codeaurora.org> CC: Saugata Das <saugata.das@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10gpio/gpio-tps65910: gpio_chip.of_node referenced without CONFIG_OF_GPIO definedJerry Snitselaar
commit 626f9914 added code to initialize gpio_chip.of_node, but if CONFIG_OF_GPIO is not defined gps-tps65910 fails to build with an error complaining gpio_chip has no member of_node. I ran into this while doing a allyesconfig build on linux-next. Signed-off-by: Gerard Snitselaar <dev@snitselaar.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-07-10Merge tag 'fixes-for-v3.5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO fixes from Linus Walleij: "Yes, this is a *LATE* GPIO pull request with fixes for v3.5. Grant moved across the planet and accidentally fell off the grid, so he asked me to take over the GPIO merges for a while 10 days ago. Since then I went over the archives and collected this pile of fixes, and pulled two of them from the TI maintainer Kevin Hilman. Then waited for them to at least hit linux-next once or twice." GPIO fixes for v3.5: - Invalid context restore on bank 0 for OMAP driver in runtime suspend/resume cycle - Check for NULL platform data in sta-2x11 driver - Constrain selection of the V1 MSM GPIO driver to applicable platforms (Kconfig issue) - Make sure the correct output value is set in the wm8994 driver - Export devm_gpio_request_one() so it can be used in modules. Apparently some in-kernel modules can be configured to use this leading to breakage. - Check that the GPIO is valid in the lantiq driver - Fix the flag bits introduced for v3.5, so they don't overlap - Fix a device tree intialization bug for imx21-compatible devices - Carry over the OF node to the TPS65910 GPIO chip struct * tag 'fixes-for-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: tps65910: initialize of_node of gpio_chip gpio/mxc: make irqs work for fsl,imx21-gpio devices gpio: fix bits conflict for gpio flags mips: pci-lantiq: Fix check for valid gpio gpio: export devm_gpio_request_one gpiolib: wm8994: Pay attention to the value set when enabling as output gpio/msm_v1: CONFIG_GPIO_MSM_V1 is only available on three SoCs gpio-sta2x11: don't use pdata if null gpio/omap: fix invalid context restore of gpio bank-0 gpio/omap: fix irq loss while in idle with debounce on
2012-07-10Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc fixes from Benjamin Herrenschmidt: "It looks like my rewrite of our lazy irq scheme is still exposing "interesting" issues left and right. The previous fixes are now causing an occasional BUG_ON to trigger (which this patch turns into a WARN_ON while at it), due to another issue of disconnect of the lazy irq state vs the processor state in the idle loop on pseries and cell. This should fix it properly once for all moving the nasty code to a common helper function. There's also couple more fixes for some debug stuff that didn't build (and helped resolving those problems so it's worth having), along with a compile fix for newer gcc's." * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: tty/hvc_opal: Fix debug function name powerpc/numa: Avoid stupid uninitialized warning from gcc powerpc: Fix build of some debug irq code powerpc: More fixes for lazy IRQ vs. idle
2012-07-10ACPI / PM: Leave Bus Master Arbitration enabled for suspend/resumeJonathan Nieder
This is an old suspend/resume lockup fix: commit 2780cc4660e1 Author: Len Brown <len.brown@intel.com> Date: Thu Dec 23 13:43:30 2004 -0500 [ACPI] Fix suspend/resume lockup issue by leaving Bus Master Arbitration enabled. The ACPI spec mandates it be disabled only for C3. http://bugzilla.kernel.org/show_bug.cgi?id=3599 Signed-off-by: David Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> The bug snuck back in in commit 2feec47d4c5f (ACPICA: ACPI 5: Support for new FADT SleepStatus, SleepControl registers, 2012-02-14), presumably by copy/pasting a copy of the code without that fix for the legacy case. On affected machines, after that commit, the machine locks up hard on resume from suspend. The same fix as seven years ago still works. Addresses <https://bugzilla.kernel.org/show_bug.cgi?id=43641>. Reported-bisected-and-tested-by: Octavio Alvarez <alvarezp@alvarezp.com> Reported-by: Adrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10Revert "of: match by compatible property first"Linus Torvalds
This reverts commit 107a84e61cdd3406c842a0e4be7efffd3a05dba6. Meelis Roos reports a regression since 3.5-rc5 that stops Sun Fire V100 and Sun Netra X1 sparc64 machines from booting, hanging after enabling serial console. He bisected it to commit 107a84e61cdd. Rob Herring explains: "The problem is match combinations of compatible plus name and/or type fail to match correctly. I have a fix for this, but given how late it is for 3.5 I think it is best to revert this for now. There could be other cases that rely on the current although wrong behavior. I will post an updated version for 3.6." Bisected-and-reported-by: Meelis Roos <mroos@linux.ee> Requested-by: Rob Herring <rob.herring@calxeda.com> Cc: Thierry Reding <thierry.reding@avionic-design.de> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-10PM / Domains: Add missing static storage class specifier in domain.c fileSachin Kamat
Fixes the folloiwng sparse warning: drivers/base/power/domain.c:149:5: warning: symbol '__pm_genpd_poweron' was not declared. Should it be static? Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10PM / crypto / ux500: Use struct dev_pm_ops for power managementRafael J. Wysocki
Make the ux500 crypto driver define its PM callbacks through struct dev_pm_ops objects rather than by using legacy PM hooks in struct platform_driver. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2012-07-10PM / IPMI: Remove empty legacy PCI PM callbacksRafael J. Wysocki
The legacy PM callbacks provided by the IPMI PCI driver are empty routines returning 0, so they can be safely dropped. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Corey Minyard <cminyard@mvista.com>
2012-07-10tpm_nsc: Use struct dev_pm_ops for power managementRafael J. Wysocki
Make the tpm_nsc driver define its PM callbacks through a struct dev_pm_ops object rather than by using legacy PM hooks in struct platform_driver. This allows the driver to use tpm_pm_suspend() and tpm_pm_resume() as its PM callbacks directly, without defining its own PM callback routines. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10tpm_tis: Use struct dev_pm_ops for power managementRafael J. Wysocki
Make the tpm_tis driver define its PM callbacks through a struct dev_pm_ops object rather than by using legacy PM hooks in struct platform_driver. This allows the driver to use tpm_pm_suspend() as its suspend callback directly, without defining its own suspend callback routine. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10tpm_atmel: Use struct dev_pm_ops for power managementRafael J. Wysocki
Make the tpm_atmel driver define its PM callbacks through a struct dev_pm_ops object rather than by using legacy PM hooks in struct platform_driver. This allows the driver to use tpm_pm_suspend() and tpm_pm_resume() as its PM callbacks directly, without defining its own PM callback routines. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10PM / TPM: Drop unused pm_message_t argument from tpm_pm_suspend()Rafael J. Wysocki
The tpm_pm_suspend()'s second argument of type pm_message_t is not used, so remove it. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10omap-rng: Use struct dev_pm_ops for power managementRafael J. Wysocki
Make the omap-rng driver define its PM callbacks through a struct dev_pm_ops object rather than by using legacy PM hooks in struct platform_driver. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10PM / cpuidle: System resume hang fix with cpuidlePreeti U Murthy
On certain bios, resume hangs if cpus are allowed to enter idle states during suspend [1]. This was fixed in apci idle driver [2].But intel_idle driver does not have this fix. Thus instead of replicating the fix in both the idle drivers, or in more platform specific idle drivers if needed, the more general cpuidle infrastructure could handle this. A suspend callback in cpuidle_driver could handle this fix. But a cpuidle_driver provides only basic functionalities like platform idle state detection capability and mechanisms to support entry and exit into CPU idle states. All other cpuidle functions are found in the cpuidle generic infrastructure for good reason that all cpuidle drivers, irrepective of their platforms will support these functions. One option therefore would be to register a suspend callback in cpuidle which handles this fix. This could be called through a PM_SUSPEND_PREPARE notifier. But this is too generic a notfier for a driver to handle. Also, ideally the job of cpuidle is not to handle side effects of suspend. It should expose the interfaces which "handle cpuidle 'during' suspend" or any other operation, which the subsystems call during that respective operation. The fix demands that during suspend, no cpus should be allowed to enter deep C-states. The interface cpuidle_uninstall_idle_handler() in cpuidle ensures that. Not just that it also kicks all the cpus which are already in idle out of their idle states which was being done during cpu hotplug through a CPU_DYING_FROZEN callbacks. Now the question arises about when during suspend should cpuidle_uninstall_idle_handler() be called. Since we are dealing with drivers it seems best to call this function during dpm_suspend(). Delaying the call till dpm_suspend_noirq() does no harm, as long as it is before cpu_hotplug_begin() to avoid race conditions with cpu hotpulg operations. In dpm_suspend_noirq(), it would be wise to place this call before suspend_device_irqs() to avoid ugly interactions with the same. Ananlogously, during resume. References: [1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/674075. [2] http://marc.info/?l=linux-pm&m=133958534231884&w=2 Reported-and-tested-by: Dave Hansen <dave@linux.vnet.ibm.com> Signed-off-by: Preeti U Murthy <preeti@linux.vnet.ibm.com> Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10mei: pci_resume: set IRQF_ONESHOT for msi request_threaded_irqTomas Winkler
when the default irq quick handler is used then IRQF_ONESHOT must be set otherwise the request fails and following error is displayed: mei 0000:00:16.0: irq 48 for MSI/MSI-X genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq 48 mei 0000:00:16.0: request_threaded_irq failed: irq = 48. dpm_run_callback(): pci_pm_resume+0x0/0x140 returns -22 PM: Device 0000:00:16.0 failed to resume async: error -22 Reported-by: Peter Wu <lekensteyn@gmail.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Tested-by: Peter Wu <lekensteyn@gmail.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Cc: stable <stable@vger.kernel.org> # 3.5 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-10NFSv4: Fix an NFSv4 mount regressionTrond Myklebust
The helper nfs_fs_mount() will always call nfs4_try_mount with the mount_info->fill_super argument pointing to nfs_fill_super, which is NFSv2/v3 only. Fix is to have nfs4_try_mount replace it with nfs4_fill_super. The regression was introduced by commit c40f8d1d (NFS: Create a common fs_mount() function) Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-10PCI: EHCI: fix crash during suspend on ASUS computersAlan Stern
Quite a few ASUS computers experience a nasty problem, related to the EHCI controllers, when going into system suspend. It was observed that the problem didn't occur if the controllers were not put into the D3 power state before starting the suspend, and commit 151b61284776be2d6f02d48c23c3625678960b97 (USB: EHCI: fix crash during suspend on ASUS computers) was created to do this. It turned out this approach messed up other computers that didn't have the problem -- it prevented USB wakeup from working. Consequently commit c2fb8a3fa25513de8fedb38509b1f15a5bbee47b (USB: add NO_D3_DURING_SLEEP flag and revert 151b61284776be2) was merged; it reverted the earlier commit and added a whitelist of known good board names. Now we know the actual cause of the problem. Thanks to AceLan Kao for tracking it down. According to him, an engineer at ASUS explained that some of their BIOSes contain a bug that was added in an attempt to work around a problem in early versions of Windows. When the computer goes into S3 suspend, the BIOS tries to verify that the EHCI controllers were first quiesced by the OS. Nothing's wrong with this, but the BIOS does it by checking that the PCI COMMAND registers contain 0 without checking the controllers' power state. If the register isn't 0, the BIOS assumes the controller needs to be quiesced and tries to do so. This involves making various MMIO accesses to the controller, which don't work very well if the controller is already in D3. The end result is a system hang or memory corruption. Since the value in the PCI COMMAND register doesn't matter once the controller has been suspended, and since the value will be restored anyway when the controller is resumed, we can work around the BIOS bug simply by setting the register to 0 during system suspend. This patch (as1590) does so and also reverts the second commit mentioned above, which is now unnecessary. In theory we could do this for every PCI device. However to avoid introducing new problems, the patch restricts itself to EHCI host controllers. Finally the affected systems can suspend with USB wakeup working properly. Reference: https://bugzilla.kernel.org/show_bug.cgi?id=37632 Reference: https://bugzilla.kernel.org/show_bug.cgi?id=42728 Based-on-patch-by: AceLan Kao <acelan.kao@canonical.com> Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Tested-by: Dâniel Fraga <fragabr@gmail.com> Tested-by: Javier Marcet <jmarcet@gmail.com> Tested-by: Andrey Rahmatullin <wrar@wrar.name> Tested-by: Oleksij Rempel <bug-track@fisher-privat.net> Tested-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Cc: stable <stable@vger.kernel.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-10Input: bcm5974 - Add support for 2012 MacBook Pro RetinaHenrik Rydberg
Add support for the 15'' MacBook Pro Retina model (MacBookPro10,1). Patch originally written by clipcarl (forums.opensuse.org). Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-07-10HID: add support for 2012 MacBook Pro RetinaRyan Bourgeois
Add support for the 15'' MacBook Pro Retina. The keyboard is the same as recent models. The patch needs to be synchronized with the bcm5974 patch for the trackpad - as usual. Patch originally written by clipcarl (forums.opensuse.org). [rydberg@euromail.se: Amended mouse ignore lines] Signed-off-by: Ryan Bourgeois <bluedragonx@gmail.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-07-10regulator: tps65910: correct init value of n_voltagesLaxman Dewangan
Recent change in the core driver to get the maximum voltage is based on the (n_voltages -1) steps of voltage. For the tps65910, the (n_voltages -1)th step voltage is calculated based on the callback function list_voltage. This function direct maps the datasheet and adjust the first few steps for initial voltage as per datasheet, and hence initialize the n_voltages based on datasheet. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-10Merge tag 'davinci-v3.6-fixes' of ↵Arnd Bergmann
git://gitorious.org/linux-davinci/linux-davinci into next/fixes-non-critical DaVinci fixes for v3.6 Fix an interrupt handling issue with cp_intc which was causing occasional spurious interrupts with DA850 EVM * tag 'davinci-v3.6-fixes' of git://gitorious.org/linux-davinci/linux-davinci: ARM: davinci: da8xx: fix interrupt handling
2012-07-10Merge tag 'davinci-v3.6-soc' of ↵Arnd Bergmann
git://gitorious.org/linux-davinci/linux-davinci into next/soc From Sekhar Nori <nsekhar@ti.com>: DaVinci SoC updates for v3.6 Add IRQ domain support for cp_intc and runtime PM core support for DaVinci devices. * tag 'davinci-v3.6-soc' of git://gitorious.org/linux-davinci/linux-davinci: ARM: davinci: add runtime PM support for clock management ARM: davinci: cp_intc: Add irq domain support Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-10Merge tag 'davinci-v3.6-cleanup' of ↵Arnd Bergmann
git://gitorious.org/linux-davinci/linux-davinci into next/cleanup From: Sekhar Nori <nsekhar@ti.com> DaVinci cleanups for v3.6 Remove some header files which were marked for removal. These files are not used anymore. * tag 'davinci-v3.6-cleanup' of git://gitorious.org/linux-davinci/linux-davinci: ARM: davinci: remove dummy header files Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-10Merge tag 'omap-fixes-for-v3.5-rc6' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes From Tony Lindgren <tony@atomide.com>: Here is one PM regression fix and a defconfig change to disable echi-omap because the driver currently causes issues with PM. This annoys Kevin as it makes it harder for him to validate that PM is working. The proper fixes for the echi-omap are being discussed, but looks like it will not be properly working with PM until in v3.7. * tag 'omap-fixes-for-v3.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: omap2plus_defconfig: EHCI driver is not stable, disable it ARM: OMAP2+: hwmod code/clockdomain data: fix 32K sync timer Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-10regulator: max8952: Use core GPIO enable supportAxel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-10Merge branch 'next/devel-dma-ops' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/dma From Kukjin Kim <kgene.kim@samsung.com>: Here is updating DMA common operation for Samsung SoCs. Since some DMA client driver such as spi needs to change the configuration after dma_request() so this branch adds dma_config() can configure DMA transmit option which is included in dma_request() after that. Note, according to the changes, needs to update spi and ASoC drivers for Samsung SoCs and only got the ack from Mark Brown not Grant Likely and as I know, he is busy for moving. But I think, the spi change has no problem and it is simple. * 'next/devel-dma-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: SAMSUNG: Fix compiler warning in dma-ops.c file ASoC: follow the updated samsung DMA common operations spi/s3c64xx: Add the use of DMA config operation ARM: SAMSUNG: Add config() function in DMA common operations Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-10Merge branch 'next/cleanup-samsung' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup From Kukjin Kim <kgene.kim@samsung.com>: Samsung cleanup patches for v3.6 and most of them are removing useless codes * 'next/cleanup-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: EXYNOS: Remove the L2 cache latency setting for EXYNOS5 ARM: EXYNOS: Remove leftovers of the Samsung specific power domain control ARM: SAMSUNG: Remove unused variable 'running' on PWM ARM: SAMSUNG: remove unused SPI clock headers ARM: S3C24XX: remove unused header <mach/bast-pmu.h> ARM: S3C24XX: Remove duplicate header file inclusion ARM: SAMSUNG: Remove description corresponding to a deleted element ARM: S5PC100: Remove unused variable in dma.c file ARM: S5P64X0: Remove unused variable in dma.c file Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-10tty/hvc_opal: Fix debug function nameBenjamin Herrenschmidt
udbg_init_debug_opal() should be udbg_init_debug_opal_raw() as the caller in arch/powerpc/kernel/udbg.c expects Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>