queue-4.9/arm-samsung-limit-samsung_pm_check-config-option-to-.patch

   1 From bde23aacdb8b8aa9cd49ab063b9f3aed47c0e2ef Mon Sep 17 00:00:00 2001
   2 From: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
   3 Date: Fri, 28 Sep 2018 15:32:46 +0200
   4 Subject: ARM: samsung: Limit SAMSUNG_PM_CHECK config option to non-Exynos
   5  platforms
   6
   7 [ Upstream commit 6862fdf2201ab67cd962dbf0643d37db909f4860 ]
   8
   9 "S3C2410 PM Suspend Memory CRC" feature (controlled by
  10 SAMSUNG_PM_CHECK config option) is incompatible with highmem
  11 (uses phys_to_virt() instead of proper mapping) which is used by
  12 the majority of Exynos boards. The issue manifests itself in OOPS
  13 on affected boards, i.e. on Odroid-U3 I got the following one:
  14
  15 Unable to handle kernel paging request at virtual address f0000000
  16 pgd = 1c0f9bb4
  17 [f0000000] *pgd=00000000
  18 Internal error: Oops: 5 [#1] PREEMPT SMP ARM
  19 [<c0458034>] (crc32_le) from [<c0121f8c>] (s3c_pm_makecheck+0x34/0x54)
  20 [<c0121f8c>] (s3c_pm_makecheck) from [<c0121efc>] (s3c_pm_run_res+0x74/0x8c)
  21 [<c0121efc>] (s3c_pm_run_res) from [<c0121ecc>] (s3c_pm_run_res+0x44/0x8c)
  22 [<c0121ecc>] (s3c_pm_run_res) from [<c01210b8>] (exynos_suspend_enter+0x64/0x148)
  23 [<c01210b8>] (exynos_suspend_enter) from [<c018893c>] (suspend_devices_and_enter+0x9ec/0xe74)
  24 [<c018893c>] (suspend_devices_and_enter) from [<c0189534>] (pm_suspend+0x770/0xc04)
  25 [<c0189534>] (pm_suspend) from [<c0186ce8>] (state_store+0x6c/0xcc)
  26 [<c0186ce8>] (state_store) from [<c09db434>] (kobj_attr_store+0x14/0x20)
  27 [<c09db434>] (kobj_attr_store) from [<c02fa63c>] (sysfs_kf_write+0x4c/0x50)
  28 [<c02fa63c>] (sysfs_kf_write) from [<c02f97a4>] (kernfs_fop_write+0xfc/0x1e4)
  29 [<c02f97a4>] (kernfs_fop_write) from [<c027b198>] (__vfs_write+0x2c/0x140)
  30 [<c027b198>] (__vfs_write) from [<c027b418>] (vfs_write+0xa4/0x160)
  31 [<c027b418>] (vfs_write) from [<c027b5d8>] (ksys_write+0x40/0x8c)
  32 [<c027b5d8>] (ksys_write) from [<c0101000>] (ret_fast_syscall+0x0/0x28)
  33
  34 Add PLAT_S3C24XX, ARCH_S3C64XX and ARCH_S5PV210 dependencies to
  35 SAMSUNG_PM_CHECK config option to hide it on Exynos platforms.
  36
  37 Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
  38 Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
  39 Signed-off-by: Sasha Levin <sashal@kernel.org>
  40 ---
  41  arch/arm/plat-samsung/Kconfig | 2 +-
  42  1 file changed, 1 insertion(+), 1 deletion(-)
  43
  44 diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
  45 index e8229b9fee4a..3265b8f86069 100644
  46 --- a/arch/arm/plat-samsung/Kconfig
  47 +++ b/arch/arm/plat-samsung/Kconfig
  48 @@ -258,7 +258,7 @@ config S3C_PM_DEBUG_LED_SMDK
  49
  50  config SAMSUNG_PM_CHECK
  51         bool "S3C2410 PM Suspend Memory CRC"
  52 -       depends on PM
  53 +       depends on PM && (PLAT_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210)
  54         select CRC32
  55         help
  56           Enable the PM code's memory area checksum over sleep. This option
  57 --
  58 2.19.1
  59