El mar, 03-07-2007 a las 17:31 -0400, Chuck Ebbert escribió: > On 07/03/2007 02:16 AM, Juan Antonio Martinez wrote: [...] > When it is working it says: > > ppdev: user-space parallel port driver > ppdev0: registered pardevice > ppdev0: unregistered pardevice > ppdev0: registered pardevice > ppdev0: negotiated back to compatibility mode because user-space forgot > ppdev0: unregistered pardevice > ppdev0: registered pardevice > ppdev0: unregistered pardevice > > When broken: > > ppdev: user-space parallel port driver > ppdev0: registered pardevice > ppdev0: unregistered pardevice > > I give up, what causes that?
Please skip extra registered/unregistered pairs: was additional tests. More info: I've download vanilla libieee1284 and linux-2.6.21.5 code libieee1284 includes kernel headers for ppdev.h and parport.h; they are slightly different than kernel ones, but differences only apply to "#ifdef __KERNEL" section. Not sure on collateral effects libieee1284 fails in claim() returning E1284_SYS (System Call Error). Failed line is "ioctl(port->fd, PPCLAIM)" from access_ppdev.c Looking at ppdev.c seems that parport_claim_or_block() fails. Need further study Juan Antonio
smime.p7s
Description: S/MIME cryptographic signature
