| commit | e379c1a46068969a2b822a15dbc9a37577e1e04f | |
| author | Sudip Mukherjee <sudipm.mukherjee@gmail.com> | |
| Fri, 7 Dec 2018 14:27:33 +0000 (7 14:27 +0000) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Wed, 19 Dec 2018 09:40:17 +0000 (19 10:40 +0100) | ||
| tree | 15ab0d59bf6e6e8adbc2b8b968ccbd9548723d4d | treesnapshot (tar.gz zip) |
| parent | dc34da42860d8ce01f64ac11752eecccf53c1a6c | commitdiff |
char: lp: properly count the lp devices
When the parallel port is usb based and the lp attaches to it based on
LP_PARPORT_AUTO, we do get /dev/lp0 and when we remove the usb device
/dev/lp0 is unregistered. If we now reconnect the usb device we get
our /dev/lp0 back. But if we now disconnect and reconnect eight times
we donot get any lp device and dmesg shows:
lp: ignoring parallel port (max. 8)
Decrement the lp_count when the device detaches as this represents the
number of lp devices connected to the system.
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When the parallel port is usb based and the lp attaches to it based on
LP_PARPORT_AUTO, we do get /dev/lp0 and when we remove the usb device
/dev/lp0 is unregistered. If we now reconnect the usb device we get
our /dev/lp0 back. But if we now disconnect and reconnect eight times
we donot get any lp device and dmesg shows:
lp: ignoring parallel port (max. 8)
Decrement the lp_count when the device detaches as this represents the
number of lp devices connected to the system.
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| drivers/char/lp.c | diffblobblamehistory |