[#5401] ad1836: probe ad1836 failure - need "dma allocation failure" error message
Submitted By: Yi Li
Open Date
2009-07-28 02:49:33 Close Date
2009-08-11 17:05:41
Priority:
Medium Assignee:
Cliff Cai
Status:
Closed Fixed In Release:
N/A
Found In Release:
snaps Release:
svn trunk: r7084
Category:
N/A Board:
STAMP
Processor:
BF537 Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
Assigned (Not Start)
Uboot version or rev.:
Toolchain version or rev.:
2009r1-rc10
App binary format:
N/A
Summary: ad1836: probe ad1836 failure - need "dma allocation failure" error message
Details:
Kernel cannot probe ad1836 sound card:
AD1836: probe of AD1836.0 failed with error -12
ALSA device list:
No soundcards found.
Follow-ups
--- Yi Li 2009-07-28 02:55:01
Vivi mentioned:
1MB uncached DMA is not enough.
# CONFIG_DMA_UNCACHED_4M is not set
# CONFIG_DMA_UNCACHED_2M is not set
CONFIG_DMA_UNCACHED_1M=y
Setting 2MB DMA the ad1836 can be probed. But there is no error message to
indicate this. It need to be documented or add "allocation failure"
error message.
Attached my kernel configuration.
--- Cliff Cai 2009-08-11 22:05:55
1MB uncached DMA is enough now.
--- Sonic Zhang 2009-08-11 22:40:50
Anyway, it is better to give error information no matter when the memory
allocation fails.
Files
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Dependencies
Duplicates
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Tags
File Name File Type File Size Posted By
config.ad1836 application/octet-stream 34213 Yi Li