At Thu, 04 Feb 2010 22:20:17 +0200, Maxim Levitsky wrote: > > Hi, > > Although I thought that polling mode is harmless, it sometimes isn't. > I found out that after few dozens of hibernate cycles, the timeout would > happen again kicking out first MSI, and then whole RRIB (single_cmd). > > However, I also found out that if I resend the command that caused the > timeout, it would complete normally. > Even futher, it is possible to poll for this command, and send next > normally. It just works. > So interrupts do work, but sometimes (very rarely) are missed. It might > be even a hardware bug. > > The patch I send allows to delay switch to polling till we get 3 such > timeouts in a row. > > I tested this approach for about 130 hibernate cycles. Thanks! Applied both patches now. I changed snd_printd() to snd_printdd() since the former is enabled on vendor kernels often as default, and this can worry innocent users (I know from my experiences :) Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
