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  1. Sep 24, 2014
    • Bartlomiej Zolnierkiewicz's avatar
      ARM: mm: Fix ifdef around cpu_*_do_[suspend, resume] ops · f6f1ae82
      Bartlomiej Zolnierkiewicz authored
      
      
      Ifdef around cpu_\name\()_do_suspend and cpu_\name\()_do_resume
      ops in proc-macros.S should check for CONFIG_ARM_CPU_SUSPEND and
      not CONFIG_PM_SLEEP.  Fix it.
      
      [ Please note that cpu_v7_do_[suspend,resume] code in proc-v7.S
        already correctly checks for CONFIG_ARM_CPU_SUSPEND, same is
        true for functions for other architectures. ]
      
      This fix is needed for decoupling suspend/resume and advanced
      cpuidle support on Exynos platform (next patch fixes build for
      config with CONFIG_PM_SLEEP=n and CONFIG_ARM_EXYNOS_CPUIDLE=y).
      
      If this fix is not present then the following OOPS happens on
      the first attempt to go into advanced cpuidle mode (AFTR):
      
      [   22.244143] Unable to handle kernel NULL pointer dereference at virtual address 00000000
      [   22.250759] pgd = c0004000
      [   22.253445] [00000000] *pgd=00000000
      [   22.257012] Internal error: Oops: 80000007 [#1] PREEMPT SMP ARM
      [   22.262906] Modules linked in:
      [   22.265949] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-next-20140811-dirty #730
      [   22.273757] task: c05dce68 ti: c05d2000 task.ti: c05d2000
      [   22.279139] PC is at 0x0
      [   22.281661] LR is at __cpu_suspend_save+0x4c/0xa8
      [   22.286344] pc : [<00000000>]    lr : [<c00125e0>]    psr: a0000093
      [   22.286344] sp : c05d3ef4  ip : c05da414  fp : 00000001
      [   22.297799] r10: c05da414  r9 : c0609cb0  r8 : 0000000f
      [   22.303008] r7 : c05da444  r6 : 00000038  r5 : ea802c00  r4 : c05d3f14
      [   22.309517] r3 : 00000000  r2 : c05d3f4c  r1 : 00000038  r0 : c05d3f20
      [   22.316029] Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
      [   22.323406] Control: 10c5387d  Table: 69d5404a  DAC: 00000015
      [   22.329135] Process swapper/0 (pid: 0, stack limit = 0xc05d2240)
      [   22.335124] Stack: (0xc05d3ef4 to 0xc05d4000)
      [   22.339466] 3ee0:                                              ea802c00 00000038 c05d3f4c
      [   22.347626] 3f00: 00000000 00000007 c00123bc 00000000 c001d468 6a888000 c05d3f4c 80000000
      [   22.355785] 3f20: 00000007 c003d3a0 0000193d eaf9dde4 eaf9dde4 c02ef0c8 c000969c fffffffe
      [   22.363944] 3f40: 00000000 c0037b54 eaf9dbb8 e9d1a380 00000000 c001d468 c0609cb0 00000000
      [   22.372103] 3f60: c0609cb0 c061649e 00000001 c001250c eaf9dbb8 00000001 c0609cb0 c001d618
      [   22.380262] 3f80: c001d5d0 c02ef56c 2d9d2e1e 00000005 eaf9dbb8 c02edcc4 2d9d2e1e 00000005
      [   22.388421] 3fa0: c040446c c05da4ec c040446c eaf9dbb8 c05cfbb0 c004c580 c05dce68 c05b3ae8
      [   22.396580] 3fc0: 00000000 c058bb24 ffffffff ffffffff c058b5e4 00000000 00000000 c05b3ae8
      [   22.404740] 3fe0: c0616994 c05da47c c05b3ae4 c05ddeec 4000406a 40008074 00000000 00000000
      [   22.412909] [<c00125e0>] (__cpu_suspend_save) from [<c00123bc>] (__cpu_suspend+0x5c/0x70)
      [   22.421074] [<c00123bc>] (__cpu_suspend) from [<c05d3f4c>] (init_thread_union+0x1f4c/0x2000)
      [   22.429479] Code: bad PC value
      [   22.432518] ---[ end trace fb90ebf4217d0ad9 ]---
      [   22.437116] Kernel panic - not syncing: Attempted to kill the idle task!
      [   22.443800] Rebooting in 5 seconds..
      
      This patch has been tested on Exynos4210 based Origen board.
      
      Signed-off-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
      Acked-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
      Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
      f6f1ae82
    • Bartlomiej Zolnierkiewicz's avatar
      ARM: EXYNOS: Fix build with PM_SLEEP=n and ARM_EXYNOS_CPUIDLE=n · 658cff0d
      Bartlomiej Zolnierkiewicz authored
      
      
      Fix building of exynos_defconfig with disabled CONFIG_PM_SLEEP by
      adding checking whether Exynos cpuidle support is enabled before
      accessing exynos_enter_aftr.
      
      The build error message:
      arch/arm/mach-exynos/built-in.o:(.data+0x74): undefined reference to `exynos_enter_aftr'
      make: *** [vmlinux] Error 1
      
      This patch has been tested on Exynos4210 based Origen board.
      
      Signed-off-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
      Acked-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
      Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
      658cff0d
    • Tomasz Figa's avatar
      ARM: SAMSUNG: Restore Samsung PM Debug functionality · 2c054716
      Tomasz Figa authored
      
      
      Due to recently merged patches and previous merge conflicts, the Samsung
      PM Debug functionality no longer can be enabled. This patch fixes
      incorrect dependency of SAMSUNG_PM_DEBUG on an integer symbol and adds
      missing header inclusion.
      
      Signed-off-by: default avatarTomasz Figa <t.figa@samsung.com>
      Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
      2c054716
    • Tomasz Figa's avatar
      ARM: dts: Fix pull setting in sd4_width8 pin group for exynos4x12 · b756dc48
      Tomasz Figa authored
      
      
      The group has the samsung,pin-pud property set to 4, which is not a
      correct value. This patch fixes this by replacing it with 3, which is
      the correct value for pull-up.
      
      Signed-off-by: default avatarTomasz Figa <t.figa@samsung.com>
      Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
      b756dc48
  2. Aug 17, 2014
  3. Aug 16, 2014