Re: [PATCH v1 2/2] drivers/gpu/drm: don't select DMA_CMA or CMA from aspeed or etnaviv
flat view
From: Mike Rapoport <rppt@kernel.org>
Date: 2021-04-08 09:57:08
Also in:
dri-devel, linux-arm-kernel, linux-aspeed, linux-mm, lkml
On Thu, Apr 08, 2021 at 11:20:11AM +0200, David Hildenbrand wrote:
Random drivers should not override a user configuration of core knobs (e.g., CONFIG_DMA_CMA=n). Use "imply" instead, to still respect dependencies and manual overrides. "This is similar to "select" as it enforces a lower limit on another symbol except that the "implied" symbol's value may still be set to n from a direct dependency or with a visible prompt." Implying DRM_CMA should be sufficient, as that depends on CMA.
^ DMA_CMAquoted hunk ↗ jump to hunk
Note: If this is a real dependency, we should use "depends on DMA_CMA" instead - but I assume the driver can work without CMA just fine -- esp. when we wouldn't have HAVE_DMA_CONTIGUOUS right now. Signed-off-by: David Hildenbrand <redacted> --- drivers/gpu/drm/aspeed/Kconfig | 3 +-- drivers/gpu/drm/etnaviv/Kconfig | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-)diff --git a/drivers/gpu/drm/aspeed/Kconfig b/drivers/gpu/drm/aspeed/Kconfig index 5e95bcea43e9..a055f763d230 100644 --- a/drivers/gpu/drm/aspeed/Kconfig +++ b/drivers/gpu/drm/aspeed/Kconfig@@ -6,9 +6,8 @@ config DRM_ASPEED_GFX depends on MMU select DRM_KMS_HELPER select DRM_KMS_CMA_HELPER - select DMA_CMA if HAVE_DMA_CONTIGUOUS - select CMA if HAVE_DMA_CONTIGUOUS select MFD_SYSCON + imply DRM_CMA
Ditto
quoted hunk ↗ jump to hunk
help Chose this option if you have an ASPEED AST2500 SOC Display Controller (aka GFX).diff --git a/drivers/gpu/drm/etnaviv/Kconfig b/drivers/gpu/drm/etnaviv/Kconfig index faa7fc68b009..5f5576b7221a 100644 --- a/drivers/gpu/drm/etnaviv/Kconfig +++ b/drivers/gpu/drm/etnaviv/Kconfig@@ -9,9 +9,8 @@ config DRM_ETNAVIV select THERMAL if DRM_ETNAVIV_THERMAL select TMPFS select WANT_DEV_COREDUMP - select CMA if HAVE_DMA_CONTIGUOUS - select DMA_CMA if HAVE_DMA_CONTIGUOUS select DRM_SCHED + imply DMA_CMA help DRM driver for Vivante GPUs.-- 2.30.2
-- Sincerely yours, Mike.