Re: Problems recording sound with ISAPnp Soundcard since Kernel-2.4.x

["Jérôme Augé" <jauge@club-internet.fr>]

[-- Attachment #1: Type: text/plain, Size: 733 bytes --]

Magic Phibo wrote:
> 
> Hello
> 
> Sorry, if this mail arrives twice ...
> 
> Since upgrade to Kernel-2.4.x (currently 2.4.10) I got problems recording sound
> causing following error message in /var/log/messages:
> 
> Sep 30 15:53:16 osiris kernel: Sound: DMA (input) timed out - IRQ/DRQ configerror?
> 
> It's a redhat dist. (7.0) with a Yamaha ISAPnp Soundcard (OPL3 YMF719) and a
> self configured Kernel-2.4.10.
> 
> [...]
> 

I also noticed this problem ...
There is a problem with the initialization of the DMA channels (dma and
dma2 are never set to the real dma channels, and they remain at -1).
Applying this patch fix this error.

I'm going to post it to the kernel mailling list.

-- 
Jérôme Augé

[-- Attachment #2: patch-opl3sa2-dma-init --]
[-- Type: text/plain, Size: 924 bytes --]

diff -ur linux.orig/drivers/sound/opl3sa2.c linux/drivers/sound/opl3sa2.c
--- linux.orig/drivers/sound/opl3sa2.c	Wed Oct  3 09:36:16 2001
+++ linux/drivers/sound/opl3sa2.c	Wed Oct  3 09:41:28 2001
@@ -862,9 +862,9 @@
 
 	/* Our own config: */
 	hw_cfg->io_base = dev->resource[4].start;
-	hw_cfg->irq     = 0;
-	hw_cfg->dma     = -1;
-	hw_cfg->dma2    = -1;
+	hw_cfg->irq     = dev->irq_resource[0].start;
+	hw_cfg->dma     = dev->dma_resource[0].start;
+	hw_cfg->dma2    = dev->dma_resource[1].start;
 	
 	/* The MSS config: */
 	mss_cfg->io_base      = dev->resource[1].start;
@@ -944,9 +944,9 @@
 			 *  give pretty output from conf_printf. :)
 			 */
 			cfg[card].io_base = io;
-			cfg[card].irq     = 0;
-			cfg[card].dma     = -1;
-			cfg[card].dma2    = -1;
+			cfg[card].irq     = irq;
+			cfg[card].dma     = dma;
+			cfg[card].dma2    = dma2;
 	
 			/* The MSS config: */
 			cfg_mss[card].io_base      = mss_io;