linux-kernel - [PATCH 1/2] ALSA: compress_offload: import DMA

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Message-Id: <20241216093410.377112-1-arnd@kernel.org>
Date: Mon, 16 Dec 2024 10:33:40 +0100
From: Arnd Bergmann <arnd@...nel.org>
To: Vinod Koul <vkoul@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Amadeusz Sławiński <amadeuszx.slawinski@...ux.intel.com>
Cc: Arnd Bergmann <arnd@...db.de>,
	Yu Jiaoliang <yujiaoliang@...o.com>,
	Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] ALSA: compress_offload: import DMA_BUF namespace

From: Arnd Bergmann <arnd@...db.de>

The compression offload code cannot be in a loadable module unless it
imports that namespace:

ERROR: modpost: module snd-compress uses symbol dma_buf_get from namespace DMA_BUF, but does not import it.
ERROR: modpost: module snd-compress uses symbol dma_buf_put from namespace DMA_BUF, but does not import it.
ERROR: modpost: module snd-compress uses symbol dma_buf_fd from namespace DMA_BUF, but does not import it.

Fixes: 04177158cf98 ("ALSA: compress_offload: introduce accel operation mode")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 sound/core/compress_offload.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index 86ed2fbee0c8..ec2485c00e49 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -1247,6 +1247,7 @@ void snd_compr_task_finished(struct snd_compr_stream *stream,
 }
 EXPORT_SYMBOL_GPL(snd_compr_task_finished);
 
+MODULE_IMPORT_NS("DMA_BUF");
 #endif /* CONFIG_SND_COMPRESS_ACCEL */
 
 static long snd_compr_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
-- 
2.39.5