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2015-12-15ser_gigaset: turn nonsense checks into WARN_ONAlan Cox
These checks do nothing useful to protect the code from races. On the other hand if the old code has been masking a real bug we would like to know about it. The check for tiocmset is kept because it is valid for a tty driver to have a NULL tiocmset method. That in itself is probably a mistake given modern coding practices - but needs fixing in the tty layer. Signed-off-by: Alan Cox <alan@linux.intel.com> Acked-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-15ser_gigaset: fix up NULL checksTilman Schmidt
Commit f34d7a5b7010 ("tty: The big operations rework") changed tty->driver to tty->ops but left NULL checks for tty->driver untouched. Fix. Signed-off-by: Tilman Schmidt <tilman@imap.cc> [pebolle: removed Fixes tag] Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-15Merge branch 'linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto fix from Herbert Xu: "This fixes a boundary condition in the blkcipher SG walking code that can lead to a crash when used with the new chacha20 algorithm" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: skcipher - Copy iv from desc even for 0-len walks
2015-12-15Fix user-visible spelling errorLinus Torvalds
Pavel Machek reports a warning about W+X pages found in the "Persisent" kmap area. After grepping for it (using the correct spelling), and not finding it, I noticed how the debug printk was just misspelled. Fix it. The actual mapping bug that Pavel reported is still open. It's apparently a separate issue from the known EFI page tables, looks like it's related to the HIGHMEM mappings. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-12-15qlcnic: fix a timeout loopDan Carpenter
The problem here is that at the end of the loop we test for if idc->vnic_wait_limit is zero, but since idc->vnic_wait_limit-- is a post-op, it actually ends up set to (u8)-1. I have fixed this by moving the decrement inside the loop. Fixes: 486a5bc77a4a ('qlcnic: Add support for 83xx suspend and resume.') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-15sfc: fix a timeout loopDan Carpenter
We test for if "tries" is zero at the end but "tries--" is a post-op so it will end with "tries" set to -1. I have changed it to a pre-op instead. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-15qlge: fix a timeout loop in ql_change_rx_buffers()Dan Carpenter
The problem here is that after the loop we test for "if (!i) " but because "i--" is a post-op we exit with i set to -1. I have fixed this by changing it to a pre-op instead. I had to change the starting value from 3 to 4 so that we still iterate 3 times. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-15amd-xgbe: fix a couple timeout loopsDan Carpenter
At the end of the loop we test "if (!count)" but because "count--" is a post-op then the loop will end with count set to -1. I have fixed this by changing it to --count. Fixes: c5aa9e3b8156 ('amd-xgbe: Initial AMD 10GbE platform driver') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-15mISDN: fix a loop countDan Carpenter
There are two issue here. 1) cnt starts as maxloop + 1 so all these loops iterate one more time than intended. 2) At the end of the loop we test for "if (maxloop && !cnt)" but for the first two loops, we end with cnt equal to -1. Changing this to a pre-op means we end with cnt set to 0. Fixes: cae86d4a4e56 ('mISDN: Add driver for Infineon ISDN chipset family') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-15Merge branch 'for-chris-4.4' of ↵Chris Mason
git://git.kernel.org/pub/scm/linux/kernel/git/fdmanana/linux into for-linus-4.4
2015-12-15Btrfs: check prepare_uptodate_page() error code earlierChris Mason
prepare_pages() may end up calling prepare_uptodate_page() twice if our write only spans a single page. But if the first call returns an error, our page will be unlocked and its not safe to call it again. This bug goes all the way back to 2011, and it's not something commonly hit. While we're here, add a more explicit check for the page being truncated away. The bare lock_page() alone is protected only by good thoughts and i_mutex, which we're sure to regret eventually. Reported-by: Dave Jones <dsj@fb.com> Signed-off-by: Chris Mason <clm@fb.com>
2015-12-15Btrfs: check for empty bitmap list in setup_cluster_bitmapsChris Mason
Dave Jones found a warning from kasan in setup_cluster_bitmaps() ================================================================== BUG: KASAN: stack-out-of-bounds in setup_cluster_bitmap+0xc4/0x5a0 at addr ffff88039bef6828 Read of size 8 by task nfsd/1009 page:ffffea000e6fbd80 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0x8000000000000000() page dumped because: kasan: bad access detected CPU: 1 PID: 1009 Comm: nfsd Tainted: G W 4.4.0-rc3-backup-debug+ #1 ffff880065647b50 000000006bb712c2 ffff88039bef6640 ffffffffa680a43e 0000004559c00000 ffff88039bef66c8 ffffffffa62638d1 ffffffffa61121c0 ffff8803a5769de8 0000000000000296 ffff8803a5769df0 0000000000046280 Call Trace: [<ffffffffa680a43e>] dump_stack+0x4b/0x6d [<ffffffffa62638d1>] kasan_report_error+0x501/0x520 [<ffffffffa61121c0>] ? debug_show_all_locks+0x1e0/0x1e0 [<ffffffffa6263948>] kasan_report+0x58/0x60 [<ffffffffa6814b00>] ? rb_last+0x10/0x40 [<ffffffffa66f8af4>] ? setup_cluster_bitmap+0xc4/0x5a0 [<ffffffffa6262ead>] __asan_load8+0x5d/0x70 [<ffffffffa66f8af4>] setup_cluster_bitmap+0xc4/0x5a0 [<ffffffffa66f675a>] ? setup_cluster_no_bitmap+0x6a/0x400 [<ffffffffa66fcd16>] btrfs_find_space_cluster+0x4b6/0x640 [<ffffffffa66fc860>] ? btrfs_alloc_from_cluster+0x4e0/0x4e0 [<ffffffffa66fc36e>] ? btrfs_return_cluster_to_free_space+0x9e/0xb0 [<ffffffffa702dc37>] ? _raw_spin_unlock+0x27/0x40 [<ffffffffa666a1a1>] find_free_extent+0xba1/0x1520 Andrey noticed this was because we were doing list_first_entry on a list that might be empty. Rework the tests a bit so we don't do that. Signed-off-by: Chris Mason <clm@fb.com> Reprorted-by: Andrey Ryabinin <ryabinin.a.a@gmail.com> Reported-by: Dave Jones <dsj@fb.com>
2015-12-15arm64: reduce stack use in irq_handlerJames Morse
The code for switching to irq_stack stores three pieces of information on the stack, fp+lr, as a fake stack frame (that lets us walk back onto the interrupted tasks stack frame), and the address of the struct pt_regs that contains the register values from kernel entry. (which dump_backtrace() will print in any stack trace). To reduce this, we store fp, and the pointer to the struct pt_regs. unwind_frame() can recognise this as the irq_stack dummy frame, (as it only appears at the top of the irq_stack), and use the struct pt_regs values to find the missing interrupted link-register. Suggested-by: Will Deacon <will.deacon@arm.com> Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-12-15net/mlx4_core: fix handling return value of mlx4_slave_convert_portAndrzej Hajda
The function can return negative values, so its result should be assigned to signed variable. The problem has been detected using proposed semantic patch scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1]. [1]: http://permalink.gmane.org/gmane.linux.kernel/2046107 Fixes: fc48866f7 ('net/mlx4: Adapt code for N-Port VF') Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-15KVM: s390: consider system MHA for guest storageGuenther Hutzl
Verify that the guest maximum storage address is below the MHA (maximum host address) value allowed on the host. Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Guenther Hutzl <hutzl@linux.vnet.ibm.com> Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> [adopt to match recent limit,size changes] Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-12-15KVM: s390: fix mismatch between user and in-kernel guest limitDominik Dingel
While the userspace interface requests the maximum size the gmap code expects to get a maximum address. This error resulted in bigger page tables than necessary for some guest sizes, e.g. a 2GB guest used 3 levels instead of 2. At the same time we introduce KVM_S390_NO_MEM_LIMIT, which allows in a bright future that a guest spans the complete 64 bit address space. We also switch to TASK_MAX_SIZE for the initial memory size, this is a cosmetic change as the previous size also resulted in a 4 level pagetable creation. Reported-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-12-15KVM: s390: obey kptr_restrict in tracesChristian Borntraeger
The s390dbf and trace events provide a debugfs interface. If kptr_restrict is active, we should not expose kernel pointers. We can fence the debugfs output by using %pK instead of %p. Cc: Kees Cook <keescook@chromium.org> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-12-15KVM: s390: use assignment instead of memcpyChristian Borntraeger
Replace two memcpy with proper assignment. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-12-15perf record: Add record.build-id config optionNamhyung Kim
Post processing at 'perf record' takes a long time on big machines. What it does is to find the build-id of binaries found in the event stream, so that it can make sure, at 'report' time, that the symtabs (be it ELF, kallsyms, etc) being used to resolve symbols are the ones matching the binaries found at 'record' time. Sometimes we just want to skip this processing of events at the end of the session to get quicker results, making sure the binaries haven't changed from 'record' to 'report' time. Add a new config option to control this behavior. The record.build-id config variable can have one of the following values: - cache: post-process data and save/update the binaries into the build-id cache (in ~/.debug). This is the default. - no-cache: post-process the data but not update the build-id cache. Same effect as using the -N option. - skip: skip post-processing and do not update the cache. Same effect as using the -B option. Reported-and-Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Taeung Song <treeze.taeung@gmail.com> Link: http://lkml.kernel.org/r/1450144196-22957-1-git-send-email-namhyung@kernel.org [ Added some more text to the documentation ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-15ALSA: hda - Add a fixup for Thinkpad X1 Carbon 2ndTakashi Iwai
Apply the same fixup for Thinkpad with dock to Thinkpad X1 Carbon 2nd, too. This reduces the annoying loud cracking noise problem, as well as the support of missing docking port. Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=958439 Reported-and-tested-by: Benjamin Poirier <bpoirier@suse.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-15ALSA: hda - Set codec to D3 at reboot/shutdown on ThinkpadsTakashi Iwai
Lenovo Thinkpads with Realtek codecs may still have some loud crackling noises at reboot/shutdown even though a few previous fixes have been applied. It's because the previous fix (disabling the default shutup callback) takes effect only at transition of the codec power state. Meanwhile, at reboot or shutdown, we don't take down the codec power as default, thus it triggers the same problem unless the codec is powered down casually by runtime PM. This patch tries to address the issue. It gives two things: - implement the separate reboot_notify hook to struct alc_spec, and call it optionally if defined. - turn off the codec to D3 for Thinkpad models via this new callback Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=958439 Reported-and-tested-by: Benjamin Poirier <bpoirier@suse.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-15ALSA: hda - Apply click noise workaround for Thinkpads genericallyTakashi Iwai
It seems that a workaround for Thinkpad T440s crackling noise can be applied generically to all Thinkpad models: namely, disabling the default alc269 shutup callback. This patch moves it to the existing alc_fixup_tpt440_dock() while also replacing the rest code with another existing alc_fixup_disable_aamix(). It resulted in a good code reduction. Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=958439 Reported-and-tested-by: Benjamin Poirier <bpoirier@suse.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-15ALSA: hda - Fix headphone mic input on a few Dell ALC293 machinesDavid Henningsson
These laptops support both headphone, headset and mic modes for the 3.5mm jack. Cc: stable@vger.kernel.org BugLink: https://bugs.launchpad.net/bugs/1526330 Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-15pinctrl: pxa: pxa2xx: add pin control skeletonRobert Jarzmik
The wrong free functions were used to release temporary buffers. This didn't show up in the normal driver's life. Yet in suspend to RAM, the managed resource list is walked, and as memory was released, the list is corrupted and make the kernel Oops. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-15mac80211: handle width changes from opmode notification IE in beaconEyal Shapira
An AP can send an operating channel width change in a beacon opmode notification IE as long as there's a change in the nss as well (See 802.11ac-2013 section 10.41). So don't limit updating to nss only from an opmode notification IE. Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-15mac80211: suppress unchanged "limiting TX power" messagesJohannes Berg
When the AP is advertising limited TX power, the message can be printed over and over again. Suppress it when the power level isn't changing. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=106011 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-15mac80211: reprogram in interface orderJohannes Berg
During reprogramming, mac80211 currently first adds all the channel contexts, then binds them to the vifs and then goes to reconfigure all the interfaces. Drivers might, perhaps implicitly, rely on the operation order for certain things that typically happen within a single function elsewhere in mac80211. To avoid problems with that, reorder the code in mac80211's restart/reprogramming to work fully within the interface loop so that the order of operations is like in normal operation. For iwlwifi, this fixes a firmware crash when reprogramming with an AP/GO interface active. Reported-by: David Spinadel <david.spinadel@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-15mac80211: run scan completed work on reconfig failureJohannes Berg
When reconfiguration during resume fails while a scan is pending for completion work, that work will never run, and the scan will be stuck forever. Factor out the code to recover this and call it also in ieee80211_handle_reconfig_failure(). Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-15nl80211: Fix potential memory leak in nl80211_connectOla Olsson
Free cached keys if the last early return path is taken. Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-15nl80211: Fix potential memory leak in nl80211_set_wowlanOla Olsson
Compared to cfg80211_rdev_free_wowlan in core.h, the error goto label lacks the freeing of nd_config. Fix that. Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-15nl80211: fix a few memory leaks in reg.cOla Olsson
The first leak occurs when entering the default case in the switch for the initiator in set_regdom. The second leaks a platform_device struct if the platform registration in regulatory_init succeeds but the sub sequent regulatory hint fails due to no memory. Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-15ARM: 8475/1: SWP emulation: Restore original *data when failedShengjiu Wang
__user_swpX_asm maybe failed in first STREX operation, emulate_swpX will try again, but the *data has been changed in first time. which causes the result is wrong. This patch is to fix this issue. When STREX succeed, change the *data. if it fail, *data is not changed. Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-12-15ARM: 8471/1: need to save/restore arm register(r11) when it is corruptedAnson Huang
In cpu_v7_do_suspend routine, r11 is used while it is NOT saved/restored, different compiler may have different usage of ARM general registers, so it may cause issues during calling cpu_v7_do_suspend. We meet kernel fault occurs when using GCC 4.8.3, r11 contains valid value before calling into cpu_v7_do_suspend, but when returned from this routine, r11 is corrupted and lead to kernel fault. Doing save/restore for those corrupted registers is a must in assemble code. Signed-off-by: Anson Huang <Anson.Huang@freescale.com> Reviewed-by: Nicolas Pitre <nico@linaro.org> Cc: <stable@vger.kernel.org> # v3.3+ Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-12-15ARM: fix uaccess_with_memcpy() with SW_DOMAIN_PANRussell King
The uaccess_with_memcpy() code is currently incompatible with the SW PAN code: it takes locks within the region that we've changed the DACR, potentially sleeping as a result. As we do not save and restore the DACR across co-operative sleep events, can lead to an incorrect DACR value later in this code path. Reported-by: Peter Rosin <peda@axentia.se> Tested-by: Peter Rosin <peda@axentia.se> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-12-15Merge branch 'aarch64/efi' into aarch64/for-next/coreWill Deacon
Merge in EFI memblock changes from Ard, which form the preparatory work for UEFI support on 32-bit ARM.
2015-12-15clocksource/drivers/tango-xtal: Replace code by clocksource_mmio_initDaniel Lezcano
The current code to initialize, register and read the clocksource is already factored out in mmio.c via the clocksource_mmio_init function. Factor out the code with the clocksource_mmio_init function. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15clocksource/drivers/h8300: Increase the compilation test coverageDaniel Lezcano
Add the COMPILE_TEST option so the drivers can be compiled on different architecture with the 'allyesconfig' kernel configuration. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15h8300: Rename ctlr_out/in[bwl] to raw_read/write[bwl]Daniel Lezcano
For the sake of consistency, let rename all ctrl_out/in calls to the write/read calls so we have the same API consistent with the other architectures hence open the door for the increasing of the test compilation coverage. The unsigned long coercive cast is removed because all variables are set to the right type "void __iomem *". Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15ARM: dts: imx6: Fix Ethernet PHY mode on Ventana boardsKrzysztof Hałasa
Gateworks Ventana boards seem to need "RGMII-ID" (internal delay) PHY mode, instead of simple "RGMII", for their Marvell 88E1510 transceiver. Otherwise, the Ethernet MAC doesn't work with Marvell PHY driver (TX doesn't seem to work correctly). Tested on GW5400 rev. C. This bug affects ARM Fedora 23. Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl> Acked-by: Tim Harvey <tharvey@gateworks.com> Cc: <stable@vger.kernel.org> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2015-12-15ARM: dts: imx: Fix the assigned-clock mismatch issue on imx6q/dlBai Ping
The 'assigned-clock-parents' and 'assigned-clock-rates' list should corresponding to the 'assigned-clocks' property clock list. Signed-off-by: Bai Ping <b51503@freescale.com> Fixes: ed339363de1b ("ARM: dts: imx6qdl-sabreauto: Allow HDMI and LVDS to work simultaneously") Cc: <stable@vger.kernel.org> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2015-12-15clocksource/drivers/h8300_timer8: Separate the Kconfig option from the archDaniel Lezcano
The current Kconfig option is the H8300 arch option. In order to comply to the current rule, let's create a specific option for the timer8 and select it from the arch's Kconfig. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_initDaniel Lezcano
The current code to initialize, register and read the clocksource is already factored out in mmio.c via the clocksource_mmio_init function. The only difference is the readl vs readl_relaxed. Factor out the code with the clocksource_mmio_init function. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2015-12-15clocksource/drivers/h8300_timer16: Remove pointless lockDaniel Lezcano
The lock in the timer16_clocksource_read is not needed, remove it. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15clocksource/drivers/h8300_timer16: Fix irq return value checkDaniel Lezcano
The function irq_of_parse_and_map returns zero in case of failure. Fix the return code test to check against zero. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15clocksource/drivers/h8300_timer16: Remove unused fields in timer16_privDaniel Lezcano
The fields are not used in the code, remove them. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15clocksource/drivers/h8300_timer16: Remove unused macrosDaniel Lezcano
The macros are no longer used in the code, remove them. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15clocksource/drivers/h8300_timer16: Remove pointless headersDaniel Lezcano
The headers are not needed, remove them. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15clocksource/drivers/h8300_timer8: Retrieve the clock rate at init timeDaniel Lezcano
The current code retrieves the rate value when the timer is enabled which occurs each time a timer is re-armed. Except if the clock frequency has changed magically I don't see why this should be done each time. Retrieve the clock rate value at init time only. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15clocksource/drivers/h8300_timer8: Remove irq and lock legacy codeDaniel Lezcano
The time framawork takes care of disabling the interrupts and takes a lock to prevent races. Remove the legacy code in the driver taking care of the races. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-12-15clocksource/drivers/h8300_timer8: Remove pointless irq re-entrant safe codeDaniel Lezcano
The current code assumes the interrupt function is re-entrant. That is not correct. An interrupt handler is never invoked concurrently. The interrupt line is masked on all processors. Remove the chewing flags in the code. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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