Re: pppd and 2.6.25 serial driver

[Andrew Morton]

On Sun, 1 Jun 2008 21:56:21 +0100 Chris Vine <chris@xxxxxxxxxxxxxxxxxxxxx> wrote:

> Because I have had to resort to using dial-up this weekend, I noticed
> that the serial driver for the 8250/16550 UART in the 2.6.25 kernel does
> not work correctly with ppp-2.4.4. After establishing a dial-up modem
> connection it becomes unresponsive and pppd will exit waiting to
> establish a ppp connection after sending LCP configuration requests.  I
> have tested this with two different dial-up modems and at two different
> dial-up providers, with the 2.6.25.3 and 2.6.25.4 kernels.
> 
> pppd works fine with the 2.6.25 kernel if the serial driver is not used
> (for example if establishing a ppp connection over (in kernel) ATM or
> via an (out of kernel tree) softmodem driver I have.
> 
> The serial driver in 2.6.24.7 works correctly, and the good news is
> that 2.6.26-rc2 also works fine.
> 

Fun.  Presumably that means there's some serial fix which we forgot
to backport.  Or it isn't in 2.6.25.x yet.

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