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Revision 563e3c6e

ID563e3c6e6e47536bdaad277ec545e27ee0594c41

Added by aurel32 over 12 years ago

Parallel Port Direction Fix

The direction bit in the control register should not be directly

set using PPWCONTROL. The kernel gives the following debug message.

parport0 (ppdev0): use data_reverse for this!

More over setting the data pins to forward mode does not work,
perhaps a bug in the Linux PP driver. The right way to do this is
to use PPDATADIR to set the direction. The patch checks if the
user is toggling the direction bit, and invokes PPDATADIR to
do the job.

Signed-off-by: Vijay Kumar B <>
Signed-off-by: Aurelien Jarno <>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5063 c046a42c-6fe2-441c-8c8c-71466251a162

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