linux-kernel - [PATCH 5.10 37/63] dma-buf: DMABUF_MOVE_NOTIFY should depend on DMA_SHARED

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Date:   Fri, 24 Sep 2021 14:44:37 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Geert Uytterhoeven <geert@...ux-m68k.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 37/63] dma-buf: DMABUF_MOVE_NOTIFY should depend on DMA_SHARED_BUFFER

From: Geert Uytterhoeven <geert@...ux-m68k.org>

[ 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@...ux-m68k.org>
Signed-off-by: Daniel Vetter <daniel.vetter@...ll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210902124913.2698760-2-geert@linux-m68k.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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
 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
-- 
2.33.0