Re: [PATCH] serial imx.c: fix CTS trigger level lower to avoid lost chars

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Jan 21, 2010 at 11:06:53PM +0100, Wolfram Sang wrote:
> CCing linux-serial
> 
> On Thu, Jan 21, 2010 at 10:26:03PM +0100, Valentin Longchamp wrote:
> > The imx CTS trigger level is left at its reset value that is 32
> > chars. Since the RX FIFO has 32 entries, when CTS is raised, the
> > FIFO already is full. However, some serial port devices first empty
> > their TX FIFO before stopping when CTS is raised, resulting in lost
> > chars.
> 
> ? Isn't that a flaw of the other side? Have you spotted other serial drivers
> doing the same as your patch?

Arguably, but it's common behaviour of 16550A's and similar.
--
To unsubscribe from this list: send the line "unsubscribe linux-serial" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Linux PPP]     [Linux FS]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Linmodem]     [Device Mapper]     [Linux Kernel for ARM]

  Powered by Linux