lkml.org 
[lkml]   [2016]   [Jan]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] drm: arm-hdlcd: remove DMA_CMA select
Date
The newly added DRM_HDLCD driver tries to select DMA_CMA, but that is
not necessarily possible, as not all configurations contain HAVE_DMA_CONTIGUOUS:

warning: (DRM_HDLCD) selects DMA_CMA which has unmet direct dependencies (HAVE_DMA_CONTIGUOUS && CMA)
drivers/built-in.o: In function `dma_alloc_from_contiguous':
:(.text+0x1dee00): undefined reference to `cma_alloc'
drivers/built-in.o: In function `dma_release_from_contiguous':
:(.text+0x1dee24): undefined reference to `cma_release'

This removes the 'select' statement. It is not needed because CMA is meant
to transparently change the behavior of dma_alloc_coherent to make it succeed
for larger allocations, but there is no actual build-time dependency, and
the driver can still work without CMA in many cases.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 1561e558334d ("drm: Add support for ARM's HDLCD controller.")
---
Found on ARM randconfig builds with yesterday's linux-next

diff --git a/drivers/gpu/drm/arm/Kconfig b/drivers/gpu/drm/arm/Kconfig
index 5e8c8a86860b..2f4d3b7fb871 100644
--- a/drivers/gpu/drm/arm/Kconfig
+++ b/drivers/gpu/drm/arm/Kconfig
@@ -10,7 +10,6 @@ config DRM_HDLCD
depends on DRM_ARM
depends on COMMON_CLK
select COMMON_CLK_SCPI
- select DMA_CMA
select DRM_KMS_CMA_HELPER
select DRM_GEM_CMA_HELPER
help


\
 
 \ /
  Last update: 2016-01-01 16:01    [W:0.071 / U:0.304 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site