• Bartlomiej Zolnierkiewicz's avatar
    ARM: samsung: Limit SAMSUNG_PM_CHECK config option to non-Exynos platforms · 360186d8
    Bartlomiej Zolnierkiewicz authored
    [ Upstream commit 6862fdf2 ]
    
    "S3C2410 PM Suspend Memory CRC" feature (controlled by
    SAMSUNG_PM_CHECK config option) is incompatible with highmem
    (uses phys_to_virt() instead of proper mapping) which is used by
    the majority of Exynos boards. The issue manifests itself in OOPS
    on affected boards, i.e. on Odroid-U3 I got the following one:
    
    Unable to handle kernel paging request at virtual address f0000000
    pgd = 1c0f9bb4
    [f0000000] *pgd=00000000
    Internal error: Oops: 5 [#1] PREEMPT SMP ARM
    [<c0458034>] (crc32_le) from [<c0121f8c>] (s3c_pm_makecheck+0x34/0x54)
    [<c0121f8c>] (s3c_pm_makecheck) from [<c0121efc>] (s3c_pm_run_res+0x74/0x8c)
    [<c0121efc>] (s3c_pm_run_res) from [<c0121ecc>] (s3c_pm_run_res+0x44/0x8c)
    [<c0121ecc>] (s3c_pm_run_res) from [<c01210b8>] (exynos_suspend_enter+0x64/0x148)
    [<c01210b8>] (exynos_suspend_enter) from [<c018893c>] (suspend_devices_and_enter+0x9ec/0xe74)
    [<c018893c>] (suspend_devices_and_enter) from [<c0189534>] (pm_suspend+0x770/0xc04)
    [<c0189534>] (pm_suspend) from [<c0186ce8>] (state_store+0x6c/0xcc)
    [<c0186ce8>] (state_store) from [<c09db434>] (kobj_attr_store+0x14/0x20)
    [<c09db434>] (kobj_attr_store) from [<c02fa63c>] (sysfs_kf_write+0x4c/0x50)
    [<c02fa63c>] (sysfs_kf_write) from [<c02f97a4>] (kernfs_fop_write+0xfc/0x1e4)
    [<c02f97a4>] (kernfs_fop_write) from [<c027b198>] (__vfs_write+0x2c/0x140)
    [<c027b198>] (__vfs_write) from [<c027b418>] (vfs_write+0xa4/0x160)
    [<c027b418>] (vfs_write) from [<c027b5d8>] (ksys_write+0x40/0x8c)
    [<c027b5d8>] (ksys_write) from [<c0101000>] (ret_fast_syscall+0x0/0x28)
    
    Add PLAT_S3C24XX, ARCH_S3C64XX and ARCH_S5PV210 dependencies to
    SAMSUNG_PM_CHECK config option to hide it on Exynos platforms.
    Signed-off-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
    Signed-off-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
    Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
    360186d8
Kconfig 7.03 KB