Commit e29c3f81 authored Jul 23, 2023 by Randy Dunlap Committed by Greg Kroah-Hartman Jul 25, 2023

Documentation: devices.txt: reconcile serial/ucc_uart minor numers



Reconcile devices.txt with serial/ucc_uart.c regarding device number
assignments. ucc_uart.c supports 4 ports and uses minor devnums
46-49, so update devices.txt with that info.
Then update ucc_uart.c's reference to the location of the devices.txt
list in the kernel source tree.

Fixes: d7584ed2 ("[POWERPC] qe-uart: add support for Freescale QUICCEngine UART")
Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Timur Tabi <timur@kernel.org>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: linux-serial@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20230724063341.28198-1-rdunlap@infradead.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 767bb2aa

Documentation/admin-guide/devices.txt

+1 −1

Original line number	Diff line number	Diff line
		@@ -2691,7 +2691,7 @@
		45 = /dev/ttyMM1 Marvell MPSC - port 1 (obsolete unused)
		46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
		...
		47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
		49 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 3
		50 = /dev/ttyIOC0 Altix serial card
		...
		81 = /dev/ttyIOC31 Altix serial card

drivers/tty/serial/ucc_uart.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -59,7 +59,7 @@ static int firmware_loaded;
		/* #define LOOPBACK */

		/* The major and minor device numbers are defined in
		* http://www.lanana.org/docs/device-list/devices-2.6+.txt. For the QE
		* Documentation/admin-guide/devices.txt. For the QE
		* UART, we have major number 204 and minor numbers 46 - 49, which are the
		* same as for the CPM2. This decision was made because no Freescale part
		* has both a CPM and a QE.