linux-stable.git/drivers/power, branch linux-3.13.y Linux kernel stable tree power: max17040: Fix NULL pointer dereference when there is no platform_data 2014-02-22T21:34:59+00:00 Krzysztof Kozlowski k.kozlowski@samsung.com 2014-01-30T13:32:45+00:00 02c7c7de9644d17016f292e77110ea8f8b3f405a commit ac323d8d807060f7c95a685a9fe861e7b6300993 upstream. Fix NULL pointer dereference of "chip->pdata" if platform_data was not supplied to the driver. The driver during probe stored the pointer to the platform_data: chip->pdata = client->dev.platform_data; Later it was dereferenced in max17040_get_online() and max17040_get_status(). If platform_data was not supplied, the NULL pointer exception would happen: [ 6.626094] Unable to handle kernel of a at virtual address 00000000 [ 6.628557] pgd = c0004000 [ 6.632868] [00000000] *pgd=66262564 [ 6.634636] Unable to handle kernel paging request at virtual address e6262000 [ 6.642014] pgd = de468000 [ 6.644700] [e6262000] *pgd=00000000 [ 6.648265] Internal error: Oops: 5 [#1] PREEMPT SMP ARM [ 6.653552] Modules linked in: [ 6.656598] CPU: 0 PID: 31 Comm: kworker/0:1 Not tainted 3.10.14-02717-gc58b4b4 #505 [ 6.664334] Workqueue: events max17040_work [ 6.668488] task: dfa11b80 ti: df9f6000 task.ti: df9f6000 [ 6.673873] PC is at show_pte+0x80/0xb8 [ 6.677687] LR is at show_pte+0x3c/0xb8 [ 6.681503] pc : [<c001b7b8>] lr : [<c001b774>] psr: 600f0113 [ 6.681503] sp : df9f7d58 ip : 600f0113 fp : 00000009 [ 6.692965] r10: 00000000 r9 : 00000000 r8 : dfa11b80 [ 6.698171] r7 : df9f7ea0 r6 : e6262000 r5 : 00000000 r4 : 00000000 [ 6.704680] r3 : 00000000 r2 : e6262000 r1 : 600f0193 r0 : c05b3750 [ 6.711194] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 6.718485] Control: 10c53c7d Table: 5e46806a DAC: 00000015 [ 6.724218] Process kworker/0:1 (pid: 31, stack limit = 0xdf9f6238) [ 6.730465] Stack: (0xdf9f7d58 to 0xdf9f8000) [ 6.914325] [<c001b7b8>] (show_pte+0x80/0xb8) from [<c047107c>] (__do_kernel_fault.part.9+0x44/0x74) [ 6.923425] [<c047107c>] (__do_kernel_fault.part.9+0x44/0x74) from [<c001bb7c>] (do_page_fault+0x2c4/0x360) [ 6.933144] [<c001bb7c>] (do_page_fault+0x2c4/0x360) from [<c0008400>] (do_DataAbort+0x34/0x9c) [ 6.941825] [<c0008400>] (do_DataAbort+0x34/0x9c) from [<c000e5d8>] (__dabt_svc+0x38/0x60) [ 6.950058] Exception stack(0xdf9f7ea0 to 0xdf9f7ee8) [ 6.955099] 7ea0: df0c1790 00000000 00000002 00000000 df0c1794 df0c1790 df0c1790 00000042 [ 6.963271] 7ec0: df0c1794 00000001 00000000 00000009 00000000 df9f7ee8 c0306268 c0306270 [ 6.971419] 7ee0: a00f0113 ffffffff [ 6.974902] [<c000e5d8>] (__dabt_svc+0x38/0x60) from [<c0306270>] (max17040_work+0x8c/0x144) [ 6.983317] [<c0306270>] (max17040_work+0x8c/0x144) from [<c003f364>] (process_one_work+0x138/0x440) [ 6.992429] [<c003f364>] (process_one_work+0x138/0x440) from [<c003fa64>] (worker_thread+0x134/0x3b8) [ 7.001628] [<c003fa64>] (worker_thread+0x134/0x3b8) from [<c00454bc>] (kthread+0xa4/0xb0) [ 7.009875] [<c00454bc>] (kthread+0xa4/0xb0) from [<c000eb28>] (ret_from_fork+0x14/0x2c) [ 7.017943] Code: e1a03005 e2422480 e0826104 e59f002c (e7922104) [ 7.024017] ---[ end trace 73bc7006b9cc5c79 ]--- Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Fixes: c6f4a42de60b981dd210de01cd3e575835e3158e Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit ac323d8d807060f7c95a685a9fe861e7b6300993 upstream.

Fix NULL pointer dereference of "chip->pdata" if platform_data was not
supplied to the driver.

The driver during probe stored the pointer to the platform_data:
	chip->pdata = client->dev.platform_data;
Later it was dereferenced in max17040_get_online() and
max17040_get_status().

If platform_data was not supplied, the NULL pointer exception would
happen:

[    6.626094] Unable to handle kernel  of a at virtual address 00000000
[    6.628557] pgd = c0004000
[    6.632868] [00000000] *pgd=66262564
[    6.634636] Unable to handle kernel paging request at virtual address e6262000
[    6.642014] pgd = de468000
[    6.644700] [e6262000] *pgd=00000000
[    6.648265] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[    6.653552] Modules linked in:
[    6.656598] CPU: 0 PID: 31 Comm: kworker/0:1 Not tainted 3.10.14-02717-gc58b4b4 #505
[    6.664334] Workqueue: events max17040_work
[    6.668488] task: dfa11b80 ti: df9f6000 task.ti: df9f6000
[    6.673873] PC is at show_pte+0x80/0xb8
[    6.677687] LR is at show_pte+0x3c/0xb8
[    6.681503] pc : [<c001b7b8>]    lr : [<c001b774>]    psr: 600f0113
[    6.681503] sp : df9f7d58  ip : 600f0113  fp : 00000009
[    6.692965] r10: 00000000  r9 : 00000000  r8 : dfa11b80
[    6.698171] r7 : df9f7ea0  r6 : e6262000  r5 : 00000000  r4 : 00000000
[    6.704680] r3 : 00000000  r2 : e6262000  r1 : 600f0193  r0 : c05b3750
[    6.711194] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
[    6.718485] Control: 10c53c7d  Table: 5e46806a  DAC: 00000015
[    6.724218] Process kworker/0:1 (pid: 31, stack limit = 0xdf9f6238)
[    6.730465] Stack: (0xdf9f7d58 to 0xdf9f8000)
[    6.914325] [<c001b7b8>] (show_pte+0x80/0xb8) from [<c047107c>] (__do_kernel_fault.part.9+0x44/0x74)
[    6.923425] [<c047107c>] (__do_kernel_fault.part.9+0x44/0x74) from [<c001bb7c>] (do_page_fault+0x2c4/0x360)
[    6.933144] [<c001bb7c>] (do_page_fault+0x2c4/0x360) from [<c0008400>] (do_DataAbort+0x34/0x9c)
[    6.941825] [<c0008400>] (do_DataAbort+0x34/0x9c) from [<c000e5d8>] (__dabt_svc+0x38/0x60)
[    6.950058] Exception stack(0xdf9f7ea0 to 0xdf9f7ee8)
[    6.955099] 7ea0: df0c1790 00000000 00000002 00000000 df0c1794 df0c1790 df0c1790 00000042
[    6.963271] 7ec0: df0c1794 00000001 00000000 00000009 00000000 df9f7ee8 c0306268 c0306270
[    6.971419] 7ee0: a00f0113 ffffffff
[    6.974902] [<c000e5d8>] (__dabt_svc+0x38/0x60) from [<c0306270>] (max17040_work+0x8c/0x144)
[    6.983317] [<c0306270>] (max17040_work+0x8c/0x144) from [<c003f364>] (process_one_work+0x138/0x440)
[    6.992429] [<c003f364>] (process_one_work+0x138/0x440) from [<c003fa64>] (worker_thread+0x134/0x3b8)
[    7.001628] [<c003fa64>] (worker_thread+0x134/0x3b8) from [<c00454bc>] (kthread+0xa4/0xb0)
[    7.009875] [<c00454bc>] (kthread+0xa4/0xb0) from [<c000eb28>] (ret_from_fork+0x14/0x2c)
[    7.017943] Code: e1a03005 e2422480 e0826104 e59f002c (e7922104)
[    7.024017] ---[ end trace 73bc7006b9cc5c79 ]---

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Fixes: c6f4a42de60b981dd210de01cd3e575835e3158e
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
max17042_battery: Fix build errors caused by missing REGMAP_I2C config 2013-12-01T22:25:03+00:00 Austin Boyle boyle.austin@gmail.com 2013-11-24T10:41:49+00:00 93353e8088057dd988362e6cae727af43734b494 max17042 now uses regmap interface but does not enable config option. This patch fixes the following build errors: drivers/power/max17042_battery.c:661:15: error: variable ‘max17042_regmap_config’ has initializer but incomplete type drivers/power/max17042_battery.c:662:2: error: unknown field ‘reg_bits’ specified in initializer drivers/power/max17042_battery.c:662:2: warning: excess elements in struct initializer drivers/power/max17042_battery.c:662:2: warning: (near initialization for ‘max17042_regmap_config’) drivers/power/max17042_battery.c:663:2: error: unknown field ‘val_bits’ specified in initializer drivers/power/max17042_battery.c:663:2: warning: excess elements in struct initializer drivers/power/max17042_battery.c:663:2: warning: (near initialization for ‘max17042_regmap_config’) drivers/power/max17042_battery.c:664:2: error: unknown field ‘val_format_endian’ specified in initializer drivers/power/max17042_battery.c:664:23: error: ‘REGMAP_ENDIAN_NATIVE’ undeclared here (not in a function) drivers/power/max17042_battery.c:664:2: warning: excess elements in struct initializer drivers/power/max17042_battery.c:664:2: warning: (near initialization for ‘max17042_regmap_config’) drivers/power/max17042_battery.c: In function ‘max17042_probe’: drivers/power/max17042_battery.c:684:2: error: implicit declaration of function ‘devm_regmap_init_i2c’ Signed-off-by: Austin Boyle <boyle.austin@gmail.com> Acked-by: Jonghwa Lee <jonghwa3.lee@samsung.com> Signed-off-by: Anton Vorontsov <anton@enomsg.org> 
max17042 now uses regmap interface but does not enable config option. This
patch fixes the following build errors:

drivers/power/max17042_battery.c:661:15: error: variable ‘max17042_regmap_config’ has initializer but incomplete type
drivers/power/max17042_battery.c:662:2: error: unknown field ‘reg_bits’ specified in initializer
drivers/power/max17042_battery.c:662:2: warning: excess elements in struct initializer
drivers/power/max17042_battery.c:662:2: warning: (near initialization for ‘max17042_regmap_config’)
drivers/power/max17042_battery.c:663:2: error: unknown field ‘val_bits’ specified in initializer
drivers/power/max17042_battery.c:663:2: warning: excess elements in struct initializer
drivers/power/max17042_battery.c:663:2: warning: (near initialization for ‘max17042_regmap_config’)
drivers/power/max17042_battery.c:664:2: error: unknown field ‘val_format_endian’ specified in initializer
drivers/power/max17042_battery.c:664:23: error: ‘REGMAP_ENDIAN_NATIVE’ undeclared here (not in a function)
drivers/power/max17042_battery.c:664:2: warning: excess elements in struct initializer
drivers/power/max17042_battery.c:664:2: warning: (near initialization for ‘max17042_regmap_config’)
drivers/power/max17042_battery.c: In function ‘max17042_probe’:
drivers/power/max17042_battery.c:684:2: error: implicit declaration of function ‘devm_regmap_init_i2c’

Signed-off-by: Austin Boyle <boyle.austin@gmail.com>
Acked-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
power_supply: Fix Oops from NULL pointer dereference from wakeup_source_activate 2013-12-01T21:41:31+00:00 Shuah Khan shuah.kh@samsung.com 2013-11-22T17:54:28+00:00 80c6463e2fa3377febfc98a6672d92d07f3c26c1 power_supply_register() calls device_init_wakeup() to register a wakeup source before initializing dev_name. As a result, device_wakeup_enable() end up registering wakeup source with a null name when wakeup_source_register() gets called with dev_name(dev) which is null at the time. When kernel is booted with wakeup_source_activate enabled, it will panic when the trace point code tries to dereference ws->name. Fixed the problem by moving up the kobject_set_name() call prior to accesses to dev_name(). Replaced kobject_set_name() with dev_set_name() which is the right interface to be called from drivers. Fixed the call to device_del() prior to device_add() in for wakeup_init_failed error handling code. Trace after the change: bash-2143 [003] d... 132.280697: wakeup_source_activate: BAT1 state=0x20001 kworker/3:2-1169 [003] d... 132.281305: wakeup_source_deactivate: BAT1 state=0x30000 Oops message: [ 819.769934] device: 'BAT1': device_add [ 819.770078] PM: Adding info for No Bus:BAT1 [ 819.770235] BUG: unable to handle kernel NULL pointer dereference at (null) [ 819.770435] IP: [<ffffffff813381c0>] skip_spaces+0x30/0x30 [ 819.770572] PGD 3efd90067 PUD 3eff61067 PMD 0 [ 819.770716] Oops: 0000 [#1] SMP [ 819.770829] Modules linked in: arc4 iwldvm mac80211 x86_pkg_temp_thermal coretemp kvm_intel joydev i915 kvm uvcvideo ghash_clmulni_intel videobuf2_vmalloc aesni_intel videobuf2_memops videobuf2_core aes_x86_64 ablk_helper cryptd videodev iwlwifi lrw rfcomm gf128mul glue_helper bnep btusb media bluetooth parport_pc hid_generic ppdev snd_hda_codec_hdmi drm_kms_helper snd_hda_codec_realtek cfg80211 drm tpm_infineon samsung_laptop snd_hda_intel usbhid snd_hda_codec hid snd_hwdep snd_pcm microcode snd_page_alloc snd_timer psmouse i2c_algo_bit lpc_ich tpm_tis video wmi mac_hid serio_raw ext2 lp parport r8169 mii [ 819.771802] CPU: 0 PID: 2167 Comm: bash Not tainted 3.12.0+ #25 [ 819.771876] Hardware name: SAMSUNG ELECTRONICS CO., LTD. 900X3C/900X3D/900X4C/900X4D/SAMSUNG_NP1234567890, BIOS P03AAC 07/12/2012 [ 819.772022] task: ffff88002e6ddcc0 ti: ffff8804015ca000 task.ti: ffff8804015ca000 [ 819.772119] RIP: 0010:[<ffffffff813381c0>] [<ffffffff813381c0>] skip_spaces+0x30/0x30 [ 819.772242] RSP: 0018:ffff8804015cbc70 EFLAGS: 00010046 [ 819.772310] RAX: 0000000000000003 RBX: ffff88040cfd6d40 RCX: 0000000000000018 [ 819.772397] RDX: 0000000000020001 RSI: 0000000000000000 RDI: 0000000000000000 [ 819.772484] RBP: ffff8804015cbcc0 R08: 0000000000000000 R09: ffff8803f0768d40 [ 819.772570] R10: ffffea001033b800 R11: 0000000000000000 R12: ffffffff81c519c0 [ 819.772656] R13: 0000000000020001 R14: 0000000000000000 R15: 0000000000020001 [ 819.772744] FS: 00007ff98309b740(0000) GS:ffff88041f200000(0000) knlGS:0000000000000000 [ 819.772845] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 819.772917] CR2: 0000000000000000 CR3: 00000003f59dc000 CR4: 00000000001407f0 [ 819.773001] Stack: [ 819.773030] ffffffff81114003 ffff8804015cbcb0 0000000000000000 0000000000000046 [ 819.773146] ffff880409757a18 ffff8803f065a160 0000000000000000 0000000000020001 [ 819.773273] 0000000000000000 0000000000000000 ffff8804015cbce8 ffffffff8143e388 [ 819.773387] Call Trace: [ 819.773434] [<ffffffff81114003>] ? ftrace_raw_event_wakeup_source+0x43/0xe0 [ 819.773520] [<ffffffff8143e388>] wakeup_source_report_event+0xb8/0xd0 [ 819.773595] [<ffffffff8143e3cd>] __pm_stay_awake+0x2d/0x50 [ 819.773724] [<ffffffff8153395c>] power_supply_changed+0x3c/0x90 [ 819.773795] [<ffffffff8153407c>] power_supply_register+0x18c/0x250 [ 819.773869] [<ffffffff813d8d18>] sysfs_add_battery+0x61/0x7b [ 819.773935] [<ffffffff813d8d69>] battery_notify+0x37/0x3f [ 819.774001] [<ffffffff816ccb7c>] notifier_call_chain+0x4c/0x70 [ 819.774071] [<ffffffff81073ded>] __blocking_notifier_call_chain+0x4d/0x70 [ 819.774149] [<ffffffff81073e26>] blocking_notifier_call_chain+0x16/0x20 [ 819.774227] [<ffffffff8109397a>] pm_notifier_call_chain+0x1a/0x40 [ 819.774316] [<ffffffff81095b66>] hibernate+0x66/0x1c0 [ 819.774407] [<ffffffff81093931>] state_store+0x71/0xa0 [ 819.774507] [<ffffffff81331d8f>] kobj_attr_store+0xf/0x20 [ 819.774613] [<ffffffff811f8618>] sysfs_write_file+0x128/0x1c0 [ 819.774735] [<ffffffff8118579d>] vfs_write+0xbd/0x1e0 [ 819.774841] [<ffffffff811861d9>] SyS_write+0x49/0xa0 [ 819.774939] [<ffffffff816d1052>] system_call_fastpath+0x16/0x1b [ 819.775055] Code: 89 f8 48 89 e5 f6 82 c0 a6 84 81 20 74 15 0f 1f 44 00 00 48 83 c0 01 0f b6 10 f6 82 c0 a6 84 81 20 75 f0 5d c3 66 0f 1f 44 00 00 <80> 3f 00 55 48 89 e5 74 15 48 89 f8 0f 1f 40 00 48 83 c0 01 80 [ 819.775760] RIP [<ffffffff813381c0>] skip_spaces+0x30/0x30 [ 819.775881] RSP <ffff8804015cbc70> [ 819.775949] CR2: 0000000000000000 [ 819.794175] ---[ end trace c4ef25127039952e ]--- Signed-off-by: Shuah Khan <shuah.kh@samsung.com> Acked-by: Anton Vorontsov <anton@enomsg.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: stable@vger.kernel.org Signed-off-by: Anton Vorontsov <anton@enomsg.org> 
power_supply_register() calls device_init_wakeup() to register a wakeup
source before initializing dev_name. As a result, device_wakeup_enable()
end up registering wakeup source with a null name when
wakeup_source_register() gets called with dev_name(dev) which is null at
the time.

When kernel is booted with wakeup_source_activate enabled, it will panic
when the trace point code tries to dereference ws->name.

Fixed the problem by moving up the kobject_set_name() call prior to
accesses to dev_name(). Replaced kobject_set_name() with dev_set_name()
which is the right interface to be called from drivers. Fixed the call to
device_del() prior to device_add() in for wakeup_init_failed error
handling code.

Trace after the change:

            bash-2143  [003] d...   132.280697: wakeup_source_activate: BAT1 state=0x20001
     kworker/3:2-1169  [003] d...   132.281305: wakeup_source_deactivate: BAT1 state=0x30000

Oops message:

[  819.769934] device: 'BAT1': device_add
[  819.770078] PM: Adding info for No Bus:BAT1
[  819.770235] BUG: unable to handle kernel NULL pointer dereference at           (null)
[  819.770435] IP: [<ffffffff813381c0>] skip_spaces+0x30/0x30
[  819.770572] PGD 3efd90067 PUD 3eff61067 PMD 0
[  819.770716] Oops: 0000 [#1] SMP
[  819.770829] Modules linked in: arc4 iwldvm mac80211 x86_pkg_temp_thermal coretemp kvm_intel joydev i915 kvm uvcvideo ghash_clmulni_intel videobuf2_vmalloc aesni_intel videobuf2_memops videobuf2_core aes_x86_64 ablk_helper cryptd videodev iwlwifi lrw rfcomm gf128mul glue_helper bnep btusb media bluetooth parport_pc hid_generic ppdev snd_hda_codec_hdmi drm_kms_helper snd_hda_codec_realtek cfg80211 drm tpm_infineon samsung_laptop snd_hda_intel usbhid snd_hda_codec hid snd_hwdep snd_pcm microcode snd_page_alloc snd_timer psmouse i2c_algo_bit lpc_ich tpm_tis video wmi mac_hid serio_raw ext2 lp parport r8169 mii
[  819.771802] CPU: 0 PID: 2167 Comm: bash Not tainted 3.12.0+ #25
[  819.771876] Hardware name: SAMSUNG ELECTRONICS CO., LTD. 900X3C/900X3D/900X4C/900X4D/SAMSUNG_NP1234567890, BIOS P03AAC 07/12/2012
[  819.772022] task: ffff88002e6ddcc0 ti: ffff8804015ca000 task.ti: ffff8804015ca000
[  819.772119] RIP: 0010:[<ffffffff813381c0>]  [<ffffffff813381c0>] skip_spaces+0x30/0x30
[  819.772242] RSP: 0018:ffff8804015cbc70  EFLAGS: 00010046
[  819.772310] RAX: 0000000000000003 RBX: ffff88040cfd6d40 RCX: 0000000000000018
[  819.772397] RDX: 0000000000020001 RSI: 0000000000000000 RDI: 0000000000000000
[  819.772484] RBP: ffff8804015cbcc0 R08: 0000000000000000 R09: ffff8803f0768d40
[  819.772570] R10: ffffea001033b800 R11: 0000000000000000 R12: ffffffff81c519c0
[  819.772656] R13: 0000000000020001 R14: 0000000000000000 R15: 0000000000020001
[  819.772744] FS:  00007ff98309b740(0000) GS:ffff88041f200000(0000) knlGS:0000000000000000
[  819.772845] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  819.772917] CR2: 0000000000000000 CR3: 00000003f59dc000 CR4: 00000000001407f0
[  819.773001] Stack:
[  819.773030]  ffffffff81114003 ffff8804015cbcb0 0000000000000000 0000000000000046
[  819.773146]  ffff880409757a18 ffff8803f065a160 0000000000000000 0000000000020001
[  819.773273]  0000000000000000 0000000000000000 ffff8804015cbce8 ffffffff8143e388
[  819.773387] Call Trace:
[  819.773434]  [<ffffffff81114003>] ? ftrace_raw_event_wakeup_source+0x43/0xe0
[  819.773520]  [<ffffffff8143e388>] wakeup_source_report_event+0xb8/0xd0
[  819.773595]  [<ffffffff8143e3cd>] __pm_stay_awake+0x2d/0x50
[  819.773724]  [<ffffffff8153395c>] power_supply_changed+0x3c/0x90
[  819.773795]  [<ffffffff8153407c>] power_supply_register+0x18c/0x250
[  819.773869]  [<ffffffff813d8d18>] sysfs_add_battery+0x61/0x7b
[  819.773935]  [<ffffffff813d8d69>] battery_notify+0x37/0x3f
[  819.774001]  [<ffffffff816ccb7c>] notifier_call_chain+0x4c/0x70
[  819.774071]  [<ffffffff81073ded>] __blocking_notifier_call_chain+0x4d/0x70
[  819.774149]  [<ffffffff81073e26>] blocking_notifier_call_chain+0x16/0x20
[  819.774227]  [<ffffffff8109397a>] pm_notifier_call_chain+0x1a/0x40
[  819.774316]  [<ffffffff81095b66>] hibernate+0x66/0x1c0
[  819.774407]  [<ffffffff81093931>] state_store+0x71/0xa0
[  819.774507]  [<ffffffff81331d8f>] kobj_attr_store+0xf/0x20
[  819.774613]  [<ffffffff811f8618>] sysfs_write_file+0x128/0x1c0
[  819.774735]  [<ffffffff8118579d>] vfs_write+0xbd/0x1e0
[  819.774841]  [<ffffffff811861d9>] SyS_write+0x49/0xa0
[  819.774939]  [<ffffffff816d1052>] system_call_fastpath+0x16/0x1b
[  819.775055] Code: 89 f8 48 89 e5 f6 82 c0 a6 84 81 20 74 15 0f 1f 44 00 00 48 83 c0 01 0f b6 10 f6 82 c0 a6 84 81 20 75 f0 5d c3 66 0f 1f 44 00 00 <80> 3f 00 55 48 89 e5 74 15 48 89 f8 0f 1f 40 00 48 83 c0 01 80
[  819.775760] RIP  [<ffffffff813381c0>] skip_spaces+0x30/0x30
[  819.775881]  RSP <ffff8804015cbc70>
[  819.775949] CR2: 0000000000000000
[  819.794175] ---[ end trace c4ef25127039952e ]---

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Acked-by: Anton Vorontsov <anton@enomsg.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
Merge tag 'for-v3.13' of git://git.infradead.org/battery-2.6 2013-11-18T23:35:09+00:00 Linus Torvalds torvalds@linux-foundation.org 2013-11-18T23:35:09+00:00 a709bd585f291b9a6d0a3691ab4a0b9d3300a7a1 Pull battery updates from Anton Vorontsov: "Highlights: - A new driver for TI BQ24735 Battery Chargers, courtesy of NVidia. - Device tree bindings for TWL4030 chips. - Random fixes and cleanups" * tag 'for-v3.13' of git://git.infradead.org/battery-2.6: pm2301-charger: Remove unneeded NULL checks twl4030_charger: Add devicetree support power_supply: Fix documentation for TEMP_*ALERT* properties max17042_battery: Support regmap to access device's registers max17042_battery: Use SIMPLE_DEV_PM_OPS charger-manager : Replace kzalloc to devm_kzalloc and remove uneccessary code bq2415x_charger: Fix max battery regulation voltage tps65090-charger: Use "IS_ENABLED(CONFIG_OF)" for DT code tps65090-charger: Drop devm_free_irq of devm_ allocated irq power_supply: Add support for bq24735 charger pm2301-charger: Staticize pm2xxx_charger_die_therm_mngt pm2301-charger: Check return value of regulator_enable ab8500-charger: Remove redundant break ab8500-charger: Check return value of regulator_enable isp1704_charger: Fix driver to work with changes introduced in v3.5 
Pull battery updates from Anton Vorontsov:
 "Highlights:
   - A new driver for TI BQ24735 Battery Chargers, courtesy of NVidia.
   - Device tree bindings for TWL4030 chips.
   - Random fixes and cleanups"

* tag 'for-v3.13' of git://git.infradead.org/battery-2.6:
  pm2301-charger: Remove unneeded NULL checks
  twl4030_charger: Add devicetree support
  power_supply: Fix documentation for TEMP_*ALERT* properties
  max17042_battery: Support regmap to access device's registers
  max17042_battery: Use SIMPLE_DEV_PM_OPS
  charger-manager : Replace kzalloc to devm_kzalloc and remove uneccessary code
  bq2415x_charger: Fix max battery regulation voltage
  tps65090-charger: Use "IS_ENABLED(CONFIG_OF)" for DT code
  tps65090-charger: Drop devm_free_irq of devm_ allocated irq
  power_supply: Add support for bq24735 charger
  pm2301-charger: Staticize pm2xxx_charger_die_therm_mngt
  pm2301-charger: Check return value of regulator_enable
  ab8500-charger: Remove redundant break
  ab8500-charger: Check return value of regulator_enable
  isp1704_charger: Fix driver to work with changes introduced in v3.5
tree-wide: use reinit_completion instead of INIT_COMPLETION 2013-11-15T00:32:21+00:00 Wolfram Sang wsa@the-dreams.de 2013-11-14T22:32:02+00:00 16735d022f72b20ddbb2274b8e109f69575e9b2b Use this new function to make code more comprehensible, since we are reinitialzing the completion, not initializing. [akpm@linux-foundation.org: linux-next resyncs] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13) Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Use this new function to make code more comprehensible, since we are
reinitialzing the completion, not initializing.

[akpm@linux-foundation.org: linux-next resyncs]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13)
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
pm2301-charger: Remove unneeded NULL checks 2013-11-13T06:36:34+00:00 Dan Carpenter dan.carpenter@oracle.com 2013-11-07T08:06:17+00:00 c8024234c20eaf7b163cc4dbd963cb9cd03a4ff1 If "pm2" were NULL we would oops printing the error message. Fortunately, that's not possible so I have removed the NULL checks. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Anton Vorontsov <anton@enomsg.org> 
If "pm2" were NULL we would oops printing the error message.
Fortunately, that's not possible so I have removed the NULL checks.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
twl4030_charger: Add devicetree support 2013-11-13T06:35:45+00:00 NeilBrown neilb@suse.de 2013-10-31T06:05:50+00:00 ec0b380245d7b7d4d8e4201facca780a14352cda This allows the charger to be enabled with devicetree, and allows the parameters for charging the backup battery to be set. Signed-off-by: NeilBrown <neilb@suse.de> Acked-by: Kumar Gala <galak@codeaurora.org> Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Anton Vorontsov <anton@enomsg.org> 
This allows the charger to be enabled with devicetree, and allows the
parameters for charging the backup battery to be set.

Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Kumar Gala <galak@codeaurora.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
max17042_battery: Support regmap to access device's registers 2013-10-25T23:54:33+00:00 Jonghwa Lee jonghwa3.lee@samsung.com 2013-10-25T04:55:02+00:00 39e7213edc4f31b0650dcc5630e175a6bd278b9b This patch makes max17042 fuelguage driver uses regmap API to access its device's registers. Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Anton Vorontsov <anton@enomsg.org> 
This patch makes max17042 fuelguage driver uses regmap API to access its
device's registers.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
max17042_battery: Use SIMPLE_DEV_PM_OPS 2013-10-25T23:48:30+00:00 Manish Badarkhe badarkhe.manish@gmail.com 2013-10-14T05:26:51+00:00 3d23c7f457ed86f27425cb3f229b76720855a26d Use the SIMPLE_DEV_PM_OPS macro to declare the driver's pm_ops. Signed-off-by: Manish Badarkhe <badarkhe.manish@gmail.com> Signed-off-by: Anton Vorontsov <anton@enomsg.org> 
Use the SIMPLE_DEV_PM_OPS macro to declare the driver's pm_ops.

Signed-off-by: Manish Badarkhe <badarkhe.manish@gmail.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
charger-manager : Replace kzalloc to devm_kzalloc and remove uneccessary code 2013-10-25T23:28:54+00:00 Jonghwa Lee jonghwa3.lee@samsung.com 2013-10-25T02:47:31+00:00 883c10a9dd8099e7519cdc43b75ac4066a6ae98d Use devm function for dynamic memory allocation. Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Anton Vorontsov <anton@enomsg.org> 
Use devm function for dynamic memory allocation.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>