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[Abhishek Paliwal <902049@xxxxxxxxxxxxxxxxxx>]

Observed on ICS release as well.
https://android-build.linaro.org/builds/~linaro-android/staging-panda/#build=171



** Also affects: linaro-landing-team-ti
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/902049

Title:
  Panda : Warning messages coming from " drivers/video/omap2/dss/dss.c"

Status in Linaro Android:
  New
Status in Linaro Texas Instruments Landing Team:
  New

Bug description:
  
  Testing: https://android-build.linaro.org/builds/~linaro-android/staging-panda/#build=129

  Warning messages observed during bootup (sometimes) and when resuming from suspend(always) for build.
  "WARNING: at drivers/video/omap2/dss/dss.c"

  
  Logs: During Suspend /Resume
  ======
  [   88.895324] PM: Syncing filesystems ... done.
  [   88.923370] Freezing user space processes ... (elapsed 0.02 seconds) done.
  [   88.952911] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
  [   88.971374] Suspending console(s) (use no_console_suspend to debug)
  [   88.986602] omap_device: omap_i2c.1: new worst case activate latency 0: 640869
  [   88.987274] omap_device: omap_i2c.1: new worst case deactivate latency 0: 183105
  [   89.248168] PM: suspend of devices complete after 268.981 msecs
  [   89.251434] omap_device: aess.-1: new worst case deactivate latency 0: 3234863
  [   89.254150] omap_device: pvrsrvkm.0: new worst case deactivate latency 0: 30517
  [   89.262390] PM: late suspend of devices complete after 14.221 msecs
  [   89.262451] Disabling non-boot CPUs ...
  [   89.284942] CPU1: shutdown
  [   92.101379] Suspended for 2.815 seconds
  [   92.101989] Enabling non-boot CPUs ...
  [   92.129974] CPU1: Booted secondary processor
  [   92.130218] CPU1: Unknown IPI message 0x1
  [   92.130218] Calibrating delay loop (skipped) already calibrated this CPU
  [   92.130554] thermal_cooling_dev_register:Found cpu cpu
  [   92.130554] thermal_init_thermal_state:Not all components registered for cpu domain sensor   (null), gov=efa61960, cooling=c08f8b34
  [   92.130584] CPU1 is up
  [   92.131958] Switched to NOHz mode on CPU #1
  [   92.283782] omap_device: omapdss_dispc.-1: new worst case activate latency 0: 7507324
  [   92.283782] ------------[ cut here ]------------
  [   92.283782] WARNING: at drivers/video/omap2/dss/dss.c:716 dss_runtime_get+0x38/0x44()
  [   92.283782] Modules linked in:
  [   92.283843] [<c001a344>] (unwind_backtrace+0x0/0x108) from [<c0050eb0>] (warn_slowpath_common+0x54/0x6c)
  [   92.283843] [<c0050eb0>] (warn_slowpath_common+0x54/0x6c) from [<c0050ee4>] (warn_slowpath_null+0x1c/0x24)
  [   92.283905] [<c0050ee4>] (warn_slowpath_null+0x1c/0x24) from [<c032c0f0>] (dss_runtime_get+0x38/0x44)
  [   92.283905] [<c032c0f0>] (dss_runtime_get+0x38/0x44) from [<c032caa8>] (dispc_runtime_resume+0x8/0x15e8)
  [   92.283905] [<c032caa8>] (dispc_runtime_resume+0x8/0x15e8) from [<c03ab464>] (pm_generic_runtime_resume+0x2c/0x40)
  [   92.283905] [<c03ab464>] (pm_generic_runtime_resume+0x2c/0x40) from [<c0038b88>] (_od_resume_noirq+0x40/0x4c)
  [   92.283996] [<c0038b88>] (_od_resume_noirq+0x40/0x4c) from [<c03ac318>] (pm_noirq_op+0xac/0x194)
  [   92.283996] [<c03ac318>] (pm_noirq_op+0xac/0x194) from [<c03ac46c>] (dpm_resume_noirq+0x6c/0x17c)
  [   92.284027] [<c03ac46c>] (dpm_resume_noirq+0x6c/0x17c) from [<c008dcf0>] (suspend_devices_and_enter+0x154/0x3e0)
  [   92.284027] [<c008dcf0>] (suspend_devices_and_enter+0x154/0x3e0) from [<c008e08c>] (enter_state+0x110/0x154)
  [   92.284057] [<c008e08c>] (enter_state+0x110/0x154) from [<c008f26c>] (suspend+0x70/0x200)
  [   92.284088] [<c008f26c>] (suspend+0x70/0x200) from [<c006ade0>] (process_one_work+0x138/0x50c)
  [   92.284088] [<c006ade0>] (process_one_work+0x138/0x50c) from [<c006b58c>] (worker_thread+0x1a0/0x400)
  [   92.284118] [<c006b58c>] (worker_thread+0x1a0/0x400) from [<c006fce8>] (kthread+0x84/0x8c)
  [   92.284118] [<c006fce8>] (kthread+0x84/0x8c) from [<c0014094>] (kernel_thread_exit+0x0/0x8)
  [   92.284118] ---[ end trace a24f4e6c17096aa6 ]---
  [   92.284179] ------------[ cut here ]------------
  [   92.284179] WARNING: at drivers/video/omap2/dss/dss.c:716 dss_runtime_get+0x38/0x44()
  [   92.284179] Modules linked in:
  [   92.284210] [<c001a344>] (unwind_backtrace+0x0/0x108) from [<c0050eb0>] (warn_slowpath_common+0x54/0x6c)
  [   92.284240] [<c0050eb0>] (warn_slowpath_common+0x54/0x6c) from [<c0050ee4>] (warn_slowpath_null+0x1c/0x24)
  [   92.284240] [<c0050ee4>] (warn_slowpath_null+0x1c/0x24) from [<c032c0f0>] (dss_runtime_get+0x38/0x44)
  [   92.284271] [<c032c0f0>] (dss_runtime_get+0x38/0x44) from [<c0341684>] (hdmi_runtime_resume+0x8/0x48)
  [   92.284271] [<c0341684>] (hdmi_runtime_resume+0x8/0x48) from [<c03ab464>] (pm_generic_runtime_resume+0x2c/0x40)
  [   92.284301] [<c03ab464>] (pm_generic_runtime_resume+0x2c/0x40) from [<c0038b88>] (_od_resume_noirq+0x40/0x4c)
  [   92.284301] [<c0038b88>] (_od_resume_noirq+0x40/0x4c) from [<c03ac318>] (pm_noirq_op+0xac/0x194)
  [   92.284332] [<c03ac318>] (pm_noirq_op+0xac/0x194) from [<c03ac46c>] (dpm_resume_noirq+0x6c/0x17c)
  [   92.284332] [<c03ac46c>] (dpm_resume_noirq+0x6c/0x17c) from [<c008dcf0>] (suspend_devices_and_enter+0x154/0x3e0)
  [   92.284362] [<c008dcf0>] (suspend_devices_and_enter+0x154/0x3e0) from [<c008e08c>] (enter_state+0x110/0x154)
  [   92.284362] [<c008e08c>] (enter_state+0x110/0x154) from [<c008f26c>] (suspend+0x70/0x200)
  [   92.284393] [<c008f26c>] (suspend+0x70/0x200) from [<c006ade0>] (process_one_work+0x138/0x50c)
  [   92.284393] [<c006ade0>] (process_one_work+0x138/0x50c) from [<c006b58c>] (worker_thread+0x1a0/0x400)
  [   92.284423] [<c006b58c>] (worker_thread+0x1a0/0x400) from [<c006fce8>] (kthread+0x84/0x8c)
  [   92.284423] [<c006fce8>] (kthread+0x84/0x8c) from [<c0014094>] (kernel_thread_exit+0x0/0x8)
  [   92.284454] ---[ end trace a24f4e6c17096aa7 ]---
  [   92.284515] PM: early resume of devices complete after 153.930 msecs
  [   92.808563] Trying disable clock dss_sys_clk with 0 usecount
  [   92.808563] ------------[ cut here ]------------
  [   92.808593] WARNING: at arch/arm/plat-omap/clock.c:70 clk_disable+0x94/0xa8()
  [   92.808624] Modules linked in:
  [   92.808624] [<c001a344>] (unwind_backtrace+0x0/0x108) from [<c0050eb0>] (warn_slowpath_common+0x54/0x6c)
  [   92.808624] [<c0050eb0>] (warn_slowpath_common+0x54/0x6c) from [<c0050ee4>] (warn_slowpath_null+0x1c/0x24)
  [   92.808624] [<c0050ee4>] (warn_slowpath_null+0x1c/0x24) from [<c0034828>] (clk_disable+0x94/0xa8)
  [   92.808624] [<c0034828>] (clk_disable+0x94/0xa8) from [<c0341224>] (hdmi_runtime_suspend+0x14/0x28)
  [   92.808624] [<c0341224>] (hdmi_runtime_suspend+0x14/0x28) from [<c03ab424>] (pm_generic_runtime_suspend+0x2c/0x40)
  [   92.808624] [<c03ab424>] (pm_generic_runtime_suspend+0x2c/0x40) from [<c0038c1c>] (_od_runtime_suspend+0xc/0x24)
  [   92.808624] [<c0038c1c>] (_od_runtime_suspend+0xc/0x24) from [<c03ade58>] (rpm_callback+0x3c/0x6c)
  [   92.808837] [<c03ade58>] (rpm_callback+0x3c/0x6c) from [<c03ae348>] (rpm_suspend+0x1bc/0x3c8)
  [   92.808868] [<c03ae348>] (rpm_suspend+0x1bc/0x3c8) from [<c03af0d8>] (__pm_runtime_suspend+0x5c/0x74)
  [   92.808868] [<c03af0d8>] (__pm_runtime_suspend+0x5c/0x74) from [<c03ab7a4>] (pm_generic_runtime_idle+0x44/0x4c)
  [   92.808868] [<c03ab7a4>] (pm_generic_runtime_idle+0x44/0x4c) from [<c03ae6e0>] (rpm_idle+0x108/0x1c0)
  [   92.808868] [<c03ae6e0>] (rpm_idle+0x108/0x1c0) from [<c03ae860>] (__pm_runtime_idle+0x5c/0x74)
  [   92.808959] [<c03ae860>] (__pm_runtime_idle+0x5c/0x74) from [<c03ac19c>] (device_resume+0xa4/0x128)
  [   92.808959] [<c03ac19c>] (device_resume+0xa4/0x128) from [<c03acb28>] (dpm_resume+0x178/0x1e8)
  [   92.808959] [<c03acb28>] (dpm_resume+0x178/0x1e8) from [<c03acd1c>] (dpm_resume_end+0xc/0x18)
  [   92.808959] [<c03acd1c>] (dpm_resume_end+0xc/0x18) from [<c008dd3c>] (suspend_devices_and_enter+0x1a0/0x3e0)
  [   92.808959] [<c008dd3c>] (suspend_devices_and_enter+0x1a0/0x3e0) from [<c008e08c>] (enter_state+0x110/0x154)
  [   92.808959] [<c008e08c>] (enter_state+0x110/0x154) from [<c008f26c>] (suspend+0x70/0x200)
  [   92.809112] [<c008f26c>] (suspend+0x70/0x200) from [<c006ade0>] (process_one_work+0x138/0x50c)
  [   92.809143] [<c006ade0>] (process_one_work+0x138/0x50c) from [<c006b58c>] (worker_thread+0x1a0/0x400)
  [   92.809143] [<c006b58c>] (worker_thread+0x1a0/0x400) from [<c006fce8>] (kthread+0x84/0x8c)
  [   92.809143] [<c006fce8>] (kthread+0x84/0x8c) from [<c0014094>] (kernel_thread_exit+0x0/0x8)
  [   92.809143] ---[ end trace a24f4e6c17096aa8 ]---

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