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Date: Sun, 06 Apr 2008 09:28:38 +1000 From: Ben Nizette <bn@...sdigital.com> To: kernel <kernel@...32linux.org>, Haavard Skinnemoen <hskinnemoen@...el.com>, slipszi@...il.com Cc: linux-kernel <linux-kernel@...r.kernel.org> Subject: [BUG, bisected] atmel_spi: hard lockups in transfer Hi, 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. The tester also had to revert commit 8bacb219018a52e6f02a3cff6a7badf102ddfc44 atmel_spi: fix dmachain oops with DEBUG enabled when they reverted 154443 as they were not confident enough to resolve the conflicts that resulted from just reverting the first one. The discussion thread involving this can be seen at [2]. As I say, this is present in .24+ so any fix will be a stable candidate as well as .25 material (if we haven't missed the boat by then). Thanks, --Ben. [1] http://www.avrfreaks.net [2] http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=61891&start=20&sid=ef480fc809343ec9eff35b0cda643ffc -- 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/
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