serial: fix device name reporting when minor space is shared between drivers
authorDavid S. Miller <davem@davemloft.net>
Mon, 13 Oct 2008 09:45:26 +0000 (10:45 +0100)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 13 Oct 2008 16:51:44 +0000 (09:51 -0700)
commit8440838bc5337243917f13bc14ea2445da5e0197
tree175af8fd7d678073a9794248132b606fb536c887
parenta7be18d436f0c7007794965e5af29fa1ffff1e05
serial: fix device name reporting when minor space is shared between drivers

The multiple drivers share the minor space occupied by a particular major
number, the actual index within the device name's space is indicated by
the tty_driver->name_base + uart_port->line

Another usable formula is (uart_driver->minor - MINOR_BASE) + port->line

Use those to print the device names properly in such situations in
serial_core.c and 8250.c

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/serial/8250.c
drivers/serial/serial_core.c