Messages in this thread | | | Date | Tue, 27 Aug 2013 16:03:48 -0700 | From | Greg KH <> | Subject | Re: [PATCH] OMAP: UART: Keep the TX fifo full when possible |
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On Tue, Aug 20, 2013 at 08:57:25AM -0700, Kevin Hilman wrote: > + Felipe > > On Mon, Jul 8, 2013 at 3:04 AM, Alexander Savchenko > <oleksandr.savchenko@ti.com> wrote: > > From: Dmitry Fink <finik@ti.com> > > > > Current logic results in interrupt storm since the fifo > > is constantly below the threshold level. Change the logic > > to fill all the available spaces in the fifo as long as > > we have data to minimize the possibilty of underflow and > > elimiate excessive interrupts. > > > > Signed-off-by: Dmitry Fink <finik@ti.com> > > Signed-off-by: Alexander Savchenko <oleksandr.savchenko@ti.com> > > Hmm, another OMAP serial patch that wasn't Cc'd to linux-omap where > OMAP users might have seen it. :( > > I just bisected a strange problem in linux-next on OMAP3 down to this > patch. Reverting it fixes the problem. > > On OMAP3530 Beagle and Overo, after boot, doing a 'cat /proc/cpuinfo' > was not returning to a prompt, suggesting something strange with the > FIFO. Hitting return gets me back to a prompt. > > Greg, this one should also be dropped from tty-next until it can be > further investgated and the problem solved.
Now reverted, thanks.
greg k-h
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