On Fri, 3 Feb 2012 20:16:08 -0700 (MST) Paul Walmsley <paul@xxxxxxxxx> wrote: > On Sat, 4 Feb 2012, NeilBrown wrote: > > > On Fri, 3 Feb 2012 19:06:19 -0700 (MST) Paul Walmsley <paul@xxxxxxxxx> wrote: > > > > > > Here's a patch that helps. It seems to work down to an > > > autosuspend_delay_ms of 1 ms. Without it, the best I can get is 8 ms. > > > > > > Of course, ideally it should work fine at autosuspend_delay_ms = 0, so > > > likely there's some other infelicity that we're currently missing. > > > > > > Neil, care to give this a test and confirm it on your setup? > > > > Yes, that seems to make the output corruption go away. > > Cool, thanks for the test :-) > > > Even with small autosuspend_delay_ms down to 0 it doesn't corrupt output, > > but as the first input byte is corrupted, I cannot really type with those > > setting (so I ssh to gain control again). > > Could you try pasting in a buffer from another window? If I paste in the > buffer at the bottom of this message a few times, I see some output > corruption. I have to set autosuspend_delay_ms for omap_uart.3 as well before the behaviour is significant. But then I see no output corruption. Lots of input corruption of course but the output looks fine. NeilBrown > > > - Paul > > > > ; > ; > ; > ; > cat /sys/devices/platform/omap/omap_uart.2/power/autosuspend_delay_ms > echo 0 > /sys/devices/platform/omap/omap_uart.2/power/autosuspend_delay_ms > cat /proc/interrupts > ; > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html
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