Re: [Alsa-user] ALSA problem on Taihu board
Dear Mr. Revell, Lee Revell wrote: On Tue, 2006-11-21 at 19:38 -0500, David Cullen wrote: Dear Folks, I am having a problem with ALSA on an AMCC Taihu board. To keep things simple, I am just running speaker-test. The offending line of code is a call to mmap in pcm_mmap.c at line 368. I have used KGDB to trace the call through the kernel, and I cannot figure out the problem. The mmap call succeeds, but the address returned causes an OOPS when accessed. Has anyone else had this type of problem with ALSA on PowerPC platforms? Please post a link to your code. Lee It is not my code. It is code in the ALSA library. Specifically, it is alsa-lib-1.0.13/src/pcm/pcm_mmap.c line 368 You can get a tarball from ftp://ftp.silug.org/pub/alsa/lib/alsa-lib-1.0.13.tar.bz2 -- Thank you, David Cullen Teligy (864) 527-1263 Office (864) 415-7063 Cell - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] ALSA problem on Taihu board
On Tue, 2006-11-21 at 19:38 -0500, David Cullen wrote: Dear Folks, I am having a problem with ALSA on an AMCC Taihu board. To keep things simple, I am just running speaker-test. The offending line of code is a call to mmap in pcm_mmap.c at line 368. I have used KGDB to trace the call through the kernel, and I cannot figure out the problem. The mmap call succeeds, but the address returned causes an OOPS when accessed. Has anyone else had this type of problem with ALSA on PowerPC platforms? Please post a link to your code. Lee - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
[Alsa-user] ALSA problem on Taihu board
Dear Folks, I am having a problem with ALSA on an AMCC Taihu board. To keep things simple, I am just running speaker-test. The offending line of code is a call to mmap in pcm_mmap.c at line 368. I have used KGDB to trace the call through the kernel, and I cannot figure out the problem. The mmap call succeeds, but the address returned causes an OOPS when accessed. Has anyone else had this type of problem with ALSA on PowerPC platforms? A similar call to mmap in pcm_hw.c line 823 returns a valid address; however, the prot is PROT_READ instead of (PROT_READ | PROT_WRITE). I tried changing the value of prot after it gets passed to the kernel to see if it would fix the problem, but the returned address still cannot be read. I saw reference to aadebug in some old posts, but I do not see a way to build this. -- Thank you, David Cullen Teligy - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
