[Intel-gfx] [PATCH] drm/i915: Select CONFIG_SHMEM

[Chris Wilson]

The driver requires shmfs as the backing filesystem to handle the buffer
objects, so ensure it is selected if the user chooses to build our
driver.

Fixes: Bug 14662 - Dell E5500 kernel panic with KMS
http://bugzilla.kernel.org/show_bug.cgi?id=14662

The revealing nature of the panic is the NULL function pointer
dereference in read_cache_page_async().

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reported-and-tested-by: Mateusz Kaduk <mateusz.kaduk at gmail.com>
---
 drivers/gpu/drm/Kconfig |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index f831ea1..96eddd1 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -92,6 +92,7 @@ config DRM_I830
 config DRM_I915
 	tristate "i915 driver"
 	depends on AGP_INTEL
+	select SHMEM
 	select DRM_KMS_HELPER
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
-- 
1.6.5.3