From 12770b423da9451f684c127aeea6d868bc7e5c63 Mon Sep 17 00:00:00 2001
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Thu, 2 Sep 2021 14:49:11 +0200
Subject: dma-buf: DMABUF_MOVE_NOTIFY should depend on DMA_SHARED_BUFFER
Git-commit: c4f3a3460a5daebc772d9263500e4099b11e7300
Patch-mainline: v5.15-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
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@linux-m68k.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210902124913.2698760-2-geert@linux-m68k.org
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/dma-buf/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig
index 9561e3d2d428..de5a17c40a33 100644
--- a/drivers/dma-buf/Kconfig
+++ b/drivers/dma-buf/Kconfig
@@ -42,6 +42,7 @@ config UDMABUF
config DMABUF_MOVE_NOTIFY
bool "Move notify between drivers (EXPERIMENTAL)"
default n
+ depends on DMA_SHARED_BUFFER
help
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
--
2.38.1