HP 915 AIO Printer doesn't work out of the box in Fedora 18

[Kaustuv Saha]

Description of problem:HP 915 AIO doesn't work out of the box. hplip-gui is not
able to detect the printer. system-config-printer is able to detect the printer
and configures it with usb backend and correct (?) PPD. But scan capabilities are
then lost e.g. Simple Scan can't detect any scanners.

Version-Release number of selected component (if applicable): This issue existed
with earlier Fedora versions as well, e.g. stock Fedora 16.

How reproducible: Should be seen with any fresh install + HP 915.

Steps to Reproduce:
1. Boot up a system with Fedora 18 (with latest updates).
2. Power on the attached HP 915 AIO printer.

Actual results: system-config-printer can detect the printer but hplip-gui
can't. Simple Scan can't detect any scanner.

Expected results: Printer should be configured with "hp" CUPS backend and Simple
Scan should be able to detect a scanner.

Additional info: The problem appears to be solved by modifying the file,
/usr/share/hplip/data/models/models.dat -> the heading for the HP 915 entry is
"[hp_915]" - modifying this to "[915]" allows hplip-gui to detect the printer
and reconfigure it with the "hp" CUPS backend. Now, Simple Scan can detect the
scanner.