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From:   Kees Cook <keescook@chromium.org>
To:     Dave Airlie <airlied@redhat.com>
Cc:     Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
        kernel test robot <lkp@intel.com>,
        Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Maxime Ripard <mripard@kernel.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Arnd Bergmann <arnd@kernel.org>, Emma Anholt <emma@anholt.net>,
        Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
        Sharat Masetty <smasetty@codeaurora.org>,
        Rob Herring <robh@kernel.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Sam Ravnborg <sam@ravnborg.org>, linux-kernel@vger.kernel.org,
        dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org,
        freedreno@lists.freedesktop.org
Subject: [PATCH 2/3] drm/msm/a6xx: add CONFIG_QCOM_LLCC dependency
Date:   Wed,  2 Jun 2021 14:52:51 -0700
Message-Id: <20210602215252.695994-3-keescook@chromium.org>
In-Reply-To: <20210602215252.695994-1-keescook@chromium.org>
References: <20210602215252.695994-1-keescook@chromium.org>
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From: Arnd Bergmann <arnd@arndb.de>

When LLCC support is in a loadable module, the adreno support
cannot be built-in:

aarch64-linux-ld: drivers/gpu/drm/msm/adreno/a6xx_gpu.o: in function `a6xx_gpu_init':
a6xx_gpu.c:(.text+0xe0): undefined reference to `llcc_slice_getd'
a6xx_gpu.c:(.text+0xe0): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `llcc_slice_getd'
aarch64-linux-ld: a6xx_gpu.c:(.text+0xec): undefined reference to `llcc_slice_getd'
a6xx_gpu.c:(.text+0xec): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `llcc_slice_getd'
aarch64-linux-ld: drivers/gpu/drm/msm/adreno/a6xx_gpu.o: in function `a6xx_destroy':
a6xx_gpu.c:(.text+0x274): undefined reference to `llcc_slice_putd'
a6xx_gpu.c:(.text+0x274): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `llcc_slice_putd'
aarch64-linux-ld: a6xx_gpu.c:(.text+0x27c): undefined reference to `llcc_slice_putd'

Add a Kconfig dependency that disallows the broken configuration
but allows all working ones.

Fixes: 474dadb8b0d5 ("drm/msm/a6xx: Add support for using system cache(LLC)")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210103140407.3917405-1-arnd@kernel.org
---
 drivers/gpu/drm/msm/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
index 10f693ea89d3..52536e7adb95 100644
--- a/drivers/gpu/drm/msm/Kconfig
+++ b/drivers/gpu/drm/msm/Kconfig
@@ -7,6 +7,8 @@ config DRM_MSM
 	depends on IOMMU_SUPPORT
 	depends on OF && COMMON_CLK
 	depends on QCOM_OCMEM || QCOM_OCMEM=n
+	depends on QCOM_LLCC || QCOM_LLCC=n
+	depends on QCOM_COMMAND_DB || QCOM_COMMAND_DB=n
 	select IOMMU_IO_PGTABLE
 	select QCOM_MDT_LOADER if ARCH_QCOM
 	select REGULATOR
@@ -15,7 +17,6 @@ config DRM_MSM
 	select SHMEM
 	select TMPFS
 	select QCOM_SCM if ARCH_QCOM
-	select QCOM_COMMAND_DB if ARCH_QCOM
 	select WANT_DEV_COREDUMP
 	select SND_SOC_HDMI_CODEC if SND_SOC
 	select SYNC_FILE
-- 
2.25.1