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[211.23.39.77]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b55156734a4sm8343111a12.4.2025.09.21.19.57.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 21 Sep 2025 19:57:41 -0700 (PDT) From: LiangCheng Wang Date: Mon, 22 Sep 2025 10:57:34 +0800 Subject: [PATCH] drm/tiny: pixpaper: Fix missing dependency on DRM_GEM_SHMEM_HELPER Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250922-bar-v1-1-b2a1f54ace82@gmail.com> X-B4-Tracking: v=1; b=H4sIAB270GgC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDI1MDSyMj3aTEIt3kFMM041QLY5NUcwsloMqCotS0zAqwKdGxtbUADCz+SVU AAAA= X-Change-ID: 20250922-bar-cd1f3e834e78 To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, kernel test robot , LiangCheng Wang X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1758509859; l=1838; i=zaq14760@gmail.com; h=from:subject:message-id; bh=4a8JeN2uyVnaN5neLm35KD+FvaZjZ1l+wsL+PM10Ld0=; b=b2Lz634TMQd2uje5PtB9StbLsC7xXco/bfRnNf9wPOoWFtgWCIadUantM2fog7BKUmxtP9X+v U2tYq/DQszsAWnhkk8gWhWyDL9INPMlXvg/Mup2H6pGP+qeJ0FcxX3Y X-Developer-Key: i=zaq14760@gmail.com; a=ed25519; pk=5IaLhzvMqasgGPT47dsa8HEpfb0/Dv2BZC0TzSLj6E0= The driver uses drm_gem_shmem_prime_import_no_map() and drm_gem_shmem_dumb_create(), but the Kconfig currently selects DRM_GEM_DMA_HELPER instead of DRM_GEM_SHMEM_HELPER. This causes link failures when DRM_GEM_SHMEM_HELPER is not enabled. Select DRM_GEM_SHMEM_HELPER to fix the build. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202509220320.gfFZjmyg-lkp@int= el.com/ Fixes: c9e70639f591 ("drm: tiny: Add support for Mayqueen Pixpaper e-ink pa= nel") Signed-off-by: LiangCheng Wang Reviewed-by: Thomas Zimmermann --- This patch fixes a build failure in the Pixpaper DRM tiny driver caused by a missing dependency on DRM_GEM_SHMEM_HELPER. The driver calls drm_gem_shmem_prime_import_no_map() and drm_gem_shmem_dumb_create(), which require CONFIG_DRM_GEM_SHMEM_HELPER to be enabled. The issue was reported by the 0-day kernel test robot. This patch updates the Kconfig to select DRM_GEM_SHMEM_HELPER instead of DRM_GEM_DMA_HELPER. --- drivers/gpu/drm/tiny/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig index 94a5bf61a115929640022128e20c723ab7c0e735..7d9e85e932d7fd7bdb6ad7a4c6b= a0f835841f623 100644 --- a/drivers/gpu/drm/tiny/Kconfig +++ b/drivers/gpu/drm/tiny/Kconfig @@ -86,7 +86,7 @@ config DRM_PIXPAPER tristate "DRM support for PIXPAPER display panels" depends on DRM && SPI select DRM_CLIENT_SELECTION - select DRM_GEM_DMA_HELPER + select DRM_GEM_SHMEM_HELPER select DRM_KMS_HELPER help DRM driver for the Mayqueen Pixpaper e-ink display panel. --- base-commit: 846bd2225ec3cfa8be046655e02b9457ed41973e change-id: 20250922-bar-cd1f3e834e78 Best regards, --=20 LiangCheng Wang