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| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2008-06-05 22:45:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-06-06 11:29:09 -0700 |
| commit | 4feead71fa68a41db1d4f065c0f91fd67288877d (patch) | |
| tree | 0ecd84ffa438c473bc3bc19038f1077076af1937 /drivers/serial/ucc_uart.c | |
| parent | 4647875819aa210115d926242aa18e034517cece (diff) | |
| download | lwn-4feead71fa68a41db1d4f065c0f91fd67288877d.tar.gz lwn-4feead71fa68a41db1d4f065c0f91fd67288877d.zip | |
serial: fix driver_name conflicts
Some drivers are using too generic "serial" name for driver_name, this
might cause issues, like this:
Freescale QUICC Engine UART device driver
proc_dir_entry 'serial' already registered
Call Trace:
[cf82de50] [c0007f7c] show_stack+0x4c/0x1ac (unreliable)
[cf82de90] [c00b03fc] proc_register+0xfc/0x1ac
[cf82dec0] [c00b05c8] create_proc_entry+0x60/0xac
[cf82dee0] [c00b23dc] proc_tty_register_driver+0x60/0x98
[cf82def0] [c016dbd8] tty_register_driver+0x1b4/0x228
[cf82df20] [c0184d70] uart_register_driver+0x144/0x194
[cf82df40] [c030a378] ucc_uart_init+0x2c/0x94
[cf82df50] [c02f21a0] kernel_init+0x98/0x27c
[cf82dff0] [c000fa74] kernel_thread+0x44/0x60
^^ The board is using ucc_uart.c and 8250.c, both registered as
"serial".
This patch fixes two drivers that are using "serial" for driver_name and
not "ttyS" for dev_name. Drivers that are using "ttyS" for dev_name, will
conflict anyway, so we don't bother with these.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Alan Cox <alan@redhat.com>
Acked-By: Timur Tabi <timur@freescale.com>
Acked-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/serial/ucc_uart.c')
| -rw-r--r-- | drivers/serial/ucc_uart.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/serial/ucc_uart.c b/drivers/serial/ucc_uart.c index 01917c433f17..566a8b42e05a 100644 --- a/drivers/serial/ucc_uart.c +++ b/drivers/serial/ucc_uart.c @@ -195,7 +195,7 @@ struct uart_qe_port { static struct uart_driver ucc_uart_driver = { .owner = THIS_MODULE, - .driver_name = "serial", + .driver_name = "ucc_uart", .dev_name = "ttyQE", .major = SERIAL_QE_MAJOR, .minor = SERIAL_QE_MINOR, |