linux-kernel - [PATCH] ASoC: atmel-pcm-dma: increase buffer_bytes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 30 Mar 2015 21:40:37 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Mark Brown <broonie@...nel.org>, Bo Shen <voice.shen@...el.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Subject: [PATCH] ASoC: atmel-pcm-dma: increase buffer_bytes_max

atmel-pcm-dma is not limited to a buffer size of 64kB like atmel-pcm-pdc.
Increase buffer_bytes_max to 512kB to allow for higher bit rates (i.e. 32bps at
192kHz) to work correctly. By default, keep the prealloc at 64kB.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
---
 sound/soc/atmel/atmel-pcm-dma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/atmel/atmel-pcm-dma.c b/sound/soc/atmel/atmel-pcm-dma.c
index b8e7bad05eb1..b6625c8c411b 100644
--- a/sound/soc/atmel/atmel-pcm-dma.c
+++ b/sound/soc/atmel/atmel-pcm-dma.c
@@ -54,7 +54,7 @@ static const struct snd_pcm_hardware atmel_pcm_dma_hardware = {
 	.period_bytes_max	= 2 * 0xffff,	/* if 2 bytes format */
 	.periods_min		= 8,
 	.periods_max		= 1024,		/* no limit */
-	.buffer_bytes_max	= ATMEL_SSC_DMABUF_SIZE,
+	.buffer_bytes_max	= 512 * 1024,
 };
 
 /**
@@ -119,7 +119,7 @@ static int atmel_pcm_configure_dma(struct snd_pcm_substream *substream,
 static const struct snd_dmaengine_pcm_config atmel_dmaengine_pcm_config = {
 	.prepare_slave_config = atmel_pcm_configure_dma,
 	.pcm_hardware = &atmel_pcm_dma_hardware,
-	.prealloc_buffer_size = ATMEL_SSC_DMABUF_SIZE,
+	.prealloc_buffer_size = 64 * 1024,
 };
 
 int atmel_pcm_dma_platform_register(struct device *dev)
-- 
2.1.0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/