[PATCH v2 1/2] drivers/video/fbdev: don't select DMA_CMA
David Hildenbrand
david at redhat.com
Thu Apr 8 10:05:22 UTC 2021
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 or CMA right now.
Signed-off-by: David Hildenbrand <david at redhat.com>
---
drivers/video/fbdev/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 4f02db65dede..d37cd5341e1b 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -2186,7 +2186,7 @@ config FB_HYPERV
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
select FB_DEFERRED_IO
- select DMA_CMA if HAVE_DMA_CONTIGUOUS && CMA
+ imply DMA_CMA
help
This framebuffer driver supports Microsoft Hyper-V Synthetic Video.
--
2.30.2
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