diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2007-01-22 18:59:42 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-01-24 11:59:57 +0000 |
| commit | d28122a5877cc40350fa801353fd5a9350563ec3 (patch) | |
| tree | e06ed644c3fe537f35dfd87e8acebffe7f1b8e4f /drivers/serial | |
| parent | 7f215abc69302dc027f024fe656e4841063e8fe8 (diff) | |
| download | linux-3.10-d28122a5877cc40350fa801353fd5a9350563ec3.tar.gz linux-3.10-d28122a5877cc40350fa801353fd5a9350563ec3.tar.bz2 linux-3.10-d28122a5877cc40350fa801353fd5a9350563ec3.zip | |
[ARM] Fix AMBA serial drivers for non-first serial ports
Using console=ttyAM1 or console=ttyAMA1 resulted in an oops during
boot due to trying to drive the console before that port had been
registered. Fix this by checking whether the port is present before
allowing console setup to proceed.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/amba-pl010.c | 2 | ||||
| -rw-r--r-- | drivers/serial/amba-pl011.c | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c index 61db6973755..f69bd097166 100644 --- a/drivers/serial/amba-pl010.c +++ b/drivers/serial/amba-pl010.c @@ -589,6 +589,8 @@ static int __init pl010_console_setup(struct console *co, char *options) */ if (co->index >= UART_NR) co->index = 0; + if (!amba_ports[co->index]) + return -ENODEV; port = &amba_ports[co->index]->port; if (options) diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c index 9a3b374b2a0..44639e71372 100644 --- a/drivers/serial/amba-pl011.c +++ b/drivers/serial/amba-pl011.c @@ -661,6 +661,8 @@ static int __init pl011_console_setup(struct console *co, char *options) if (co->index >= UART_NR) co->index = 0; uap = amba_ports[co->index]; + if (!uap) + return -ENODEV; uap->port.uartclk = clk_get_rate(uap->clk); |