Alan Cox <[EMAIL PROTECTED]> wrote: > > On Llu, 2005-01-31 at 08:48, Andrew Morton wrote: > > > The tty layer cannot fix this for now, and I don't intend to fix it. Fix > > > the serial driver: the fix is quite simple since you can keep a field in > > > the driver for now to detect recursive calling into the echo case and > > > don't relock. > > > > Are we sure that the serial driver is the only one which will hit this > > deadlock? > > Yes fairly sure. The feature has been a well known but non-documented > property of the tty layer since about 1.0. There are two ways I see to > clean it up - we > can have the serial driver behave like other drivers and if need be > known about > recursive entries or we could extend the driver interface with an "echo" > method used by line disciplines when calling back to the tty driver from > a data > receive event.
The "echo method" method sounds good. Do we think that's feasible for 2.6.11, or would it be safer to disable low-latency mode for that driver? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
