Re: [PATCH] try harder to load tty ldisc driver

[Alan Cox]

On Tue, 29 Jul 2008 22:45:12 +0200
Eugeniy Meshcheryakov <eugen@xxxxxxxxxx> wrote:

> Currently function tty_ldisc_get() tries to load an ldisc driver module
> only when tty_ldisc_try_get() returns -EAGAIN. This happens only if
> module is being unloaded. If ldisc module is not loaded
> tty_ldisc_try_get() returns -EINVAL and this case is not handled in
> tty_ldisc_get(), so request_module() is not called.
> 
> Attached patch fixes this by calling request_module() if
> tty_ldisc_try_get() returned any error code.
> 
> I discovered this when my UMTS modem stopped working with 2.6.27-rc1
> because module ppp_async was not loaded.
> 
> Signed-off-by: Eugeniy Meshcheryakov <eugen@xxxxxxxxxx>

Signed-off-by: Alan Cox <alan@xxxxxxxxxx>

(And forwarded to the stable tree too)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/