[Bug 309766] New: kernel: cannot identify usb printer via ioctl()
https://bugzilla.novell.com/show_bug.cgi?id=309766 Summary: kernel: cannot identify usb printer via ioctl() Product: openSUSE 10.3 Version: Beta 2 Platform: 32bit OS/Version: openSUSE 10.3 Status: NEW Severity: Major Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: kssingvo@novell.com QAContact: qa@suse.de Found By: Development After a reboot it happens now, that cups is unable to print to USB printers. The reason is that the ioctl() to identify related printer (grab the vendor, model, and serial number from the device) is returning a EIO. As USB are hotplugable and the device nodes (/dev/usb/lp0, /dev/usb/lp1) might change after replug or reboot, it is mandatory to identify the correct printer before a printout can happen, and therefore the ioctl() must return valid values any time the system is up. An EIO is not acceptable. The related source is doing this: for (every device in /dev/usb/*) { test if device can be opened ioctl(fd, _IOC(_IOC_READ, 'P', IOCNR_GET_DEVICE_ID, device_id_size), device_id)) } To summarize: currently it's not possible to print to USB printers. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=309766#c2
Greg Kroah-Hartman
https://bugzilla.novell.com/show_bug.cgi?id=309766#c3
Klaus Singvogel
https://bugzilla.novell.com/show_bug.cgi?id=309766#c4
--- Comment #4 from Klaus Singvogel
https://bugzilla.novell.com/show_bug.cgi?id=309766#c5
Greg Kroah-Hartman
https://bugzilla.novell.com/show_bug.cgi?id=309766#c6
--- Comment #6 from Klaus Singvogel
https://bugzilla.novell.com/show_bug.cgi?id=309766#c7
Greg Kroah-Hartman
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