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Message-Id: <20210408100523.63356-3-david@redhat.com>
Date: Thu, 8 Apr 2021 12:05:23 +0200
From: David Hildenbrand <david@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: linux-mm@...ck.org, David Hildenbrand <david@...hat.com>,
Joel Stanley <joel@....id.au>, David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Andrew Jeffery <andrew@...id.au>,
Lucas Stach <l.stach@...gutronix.de>,
Russell King <linux+etnaviv@...linux.org.uk>,
Christian Gmeiner <christian.gmeiner@...il.com>,
Mike Rapoport <rppt@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
Linus Walleij <linus.walleij@...aro.org>,
Michal Simek <michal.simek@...inx.com>,
Masahiro Yamada <masahiroy@...nel.org>,
Randy Dunlap <rdunlap@...radead.org>,
Peter Collingbourne <pcc@...gle.com>,
linux-aspeed@...ts.ozlabs.org, dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org,
etnaviv@...ts.freedesktop.org, linux-fbdev@...r.kernel.org
Subject: [PATCH v2 2/2] drivers/gpu/drm: don't select DMA_CMA or CMA from aspeed or etnaviv
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 DMA_CMA should be sufficient, as that depends on CMA.
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 <david@...hat.com>
---
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..b35bb1aa9b91 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 DMA_CMA
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
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