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    Subject[PATCH 5.9 370/391] ARM: samsung: fix PM debug build with DEBUG_LL but !MMU
    Date
    From: Krzysztof Kozlowski <krzk@kernel.org>

    commit 7be0d19c751b02db778ca95e3274d5ea7f31891c upstream.

    Selecting CONFIG_SAMSUNG_PM_DEBUG (depending on CONFIG_DEBUG_LL) but
    without CONFIG_MMU leads to build errors:

    arch/arm/plat-samsung/pm-debug.c: In function ‘s3c_pm_uart_base’:
    arch/arm/plat-samsung/pm-debug.c:57:2: error:
    implicit declaration of function ‘debug_ll_addr’ [-Werror=implicit-function-declaration]

    Fixes: 99b2fc2b8b40 ("ARM: SAMSUNG: Use debug_ll_addr() to get UART base address")
    Reported-by: kernel test robot <lkp@intel.com>
    Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
    Cc: <stable@vger.kernel.org>
    Link: https://lore.kernel.org/r/20200910154150.3318-1-krzk@kernel.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/arm/plat-samsung/Kconfig | 1 +
    1 file changed, 1 insertion(+)

    --- a/arch/arm/plat-samsung/Kconfig
    +++ b/arch/arm/plat-samsung/Kconfig
    @@ -241,6 +241,7 @@ config SAMSUNG_PM_DEBUG
    depends on PM && DEBUG_KERNEL
    depends on PLAT_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
    depends on DEBUG_EXYNOS_UART || DEBUG_S3C24XX_UART || DEBUG_S3C2410_UART
    + depends on DEBUG_LL && MMU
    help
    Say Y here if you want verbose debugging from the PM Suspend and
    Resume code. See <file:Documentation/arm/samsung-s3c24xx/suspend.rst>

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