Messages in this thread | | | From | John Ogness <> | Subject | Re: [PATCH] tty: serial: 8250_omap: do not defer termios changes | Date | Mon, 11 Apr 2016 10:18:22 +0200 |
| |
On 2016-04-05, Peter Hurley <peter@hurleysoftware.com> wrote: > On 03/31/2016 01:41 AM, John Ogness wrote: >> It has been observed that the TX-DMA can stall > > Does this happen on any other OMAP part besides am335x? > I looked back over the LKML history of this and didn't see > any other design implicated in this problem.
I just ran the tests again using 4.6-rc2. I am able to reproduce the dma-tx stall with am335x/edma and dra7/sdma.
Note: To achieve the stall, both the delayed_restore and the rx_dma_broken features of the mainline 8250_omap driver needed to be removed.
John Ogness
| |