Messages in this thread | | | Date | Mon, 7 Apr 2008 02:24:04 +0200 | From | "Szilveszter Ordog" <> | Subject | Re: [BUG, bisected] atmel_spi: hard lockups in transfer |
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> For some weeks now there have been reports flying across the main AVR32 > support forum, avrfreaks [1], that atmel_spi now hard-hangs on most > transfers. The behaviour is not apparent in .23 and is in .24+. One > tester was good enough to bisect the problem and turned up > > 154443c72f47169ebcb3a7befbff0e934c49bff3 > atmel_spi: chain DMA transfers > > as the culprit.
Thanks for reporting this. Unfortunately it is difficult to test for me, since I do not have the hardware and there are no error messages. However, if you add the following line
#define DEBUG
to the top of drivers/spi/atmel_spi.c (before the #include directives) and recompile the kernel, then you would get lots of debug output which could help us pinpoint the problem.
Szilveszter
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