linux-kernel - [PATCH 4.9 084/117] ARM: samsung: fix PM debug build with DEBUG

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Message-Id: <20201109125029.678753438@linuxfoundation.org>
Date:   Mon,  9 Nov 2020 13:55:10 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH 4.9 084/117] ARM: samsung: fix PM debug build with DEBUG_LL but !MMU

From: Krzysztof Kozlowski <krzk@...nel.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@...el.com>
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
Cc: <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20200910154150.3318-1-krzk@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -242,6 +242,7 @@ config SAMSUNG_PM_DEBUG
 	bool "Samsung PM Suspend debug"
 	depends on PM && DEBUG_KERNEL
 	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.txt>