[PATCH 5.10 37/63] dma-buf: DMABUF_MOVE_NOTIFY should depend on DMA_SHARED_BUFFER

From: Greg Kroah-Hartman
Date: Fri Sep 24 2021 - 09:13:30 EST

From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>

[ Upstream commit c4f3a3460a5daebc772d9263500e4099b11e7300 ]

Move notify between drivers is an option of DMA-BUF. Enabling
DMABUF_MOVE_NOTIFY without DMA_SHARED_BUFFER does not have any impact,
as drivers/dma-buf/ is not entered during the build when
DMA_SHARED_BUFFER is disabled.

Fixes: bb42df4662a44765 ("dma-buf: add dynamic DMA-buf handling v15")
Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20210902124913.2698760-2-geert@xxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
drivers/dma-buf/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig
index 4f8224a6ac95..3ca7de37dd8f 100644
--- a/drivers/dma-buf/Kconfig
+++ b/drivers/dma-buf/Kconfig
@@ -42,6 +42,7 @@ config UDMABUF
bool "Move notify between drivers (EXPERIMENTAL)"
default n
+ depends on DMA_SHARED_BUFFER
Don't pin buffers if the dynamic DMA-buf interface is available on
both the exporter as well as the importer. This fixes a security