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authorRob Herring <robh@kernel.org>2014-04-30 19:48:29 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-03 18:16:38 -0400
commite26f1db9b8d74617519e50b41749900d0a257406 (patch)
tree08b42567dad09bafa4ce81d18d9e4c4368dc4157
parentfe1cf8af918af3ff0dd58ce92e5a5da117cb1d92 (diff)
tty/serial: fix generic earlycon option parsing
Commit 9aac5887595 (tty/serial: add generic serial earlycon) moved console option parsing from 8250_early.c and converted to kstrto* functions from simple_strtoul along the way. However, kstrto* functions are not equivalent in that they do not allow non-convertible characters at the end such as "115200n8". Fix this by changing back to simple_strtoul and ignore what checkpatch.pl says. Reported-by: Yinghai Lu <yinghai@kernel.org> Cc: Jiri Slaby <jslaby@suse.cz> Cc: linux-serial@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/tty/serial/earlycon.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index 73bf1e21aae0..c92e83088adb 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -53,7 +53,7 @@ static int __init parse_options(struct earlycon_device *device,
char *options)
{
struct uart_port *port = &device->port;
- int mmio, mmio32, length, ret;
+ int mmio, mmio32, length;
unsigned long addr;
if (!options)
@@ -64,25 +64,19 @@ static int __init parse_options(struct earlycon_device *device,
if (mmio || mmio32) {
port->iotype = (mmio ? UPIO_MEM : UPIO_MEM32);
options += mmio ? 5 : 7;
- ret = kstrtoul(options, 0, &addr);
- if (ret)
- return ret;
+ addr = simple_strtoul(options, NULL, 0);
port->mapbase = addr;
if (mmio32)
port->regshift = 2;
} else if (!strncmp(options, "io,", 3)) {
port->iotype = UPIO_PORT;
options += 3;
- ret = kstrtoul(options, 0, &addr);
- if (ret)
- return ret;
+ addr = simple_strtoul(options, NULL, 0);
port->iobase = addr;
mmio = 0;
} else if (!strncmp(options, "0x", 2)) {
port->iotype = UPIO_MEM;
- ret = kstrtoul(options, 0, &addr);
- if (ret)
- return ret;
+ addr = simple_strtoul(options, NULL, 0);
port->mapbase = addr;
} else {
return -EINVAL;
@@ -93,9 +87,7 @@ static int __init parse_options(struct earlycon_device *device,
options = strchr(options, ',');
if (options) {
options++;
- ret = kstrtouint(options, 0, &device->baud);
- if (ret)
- return ret;
+ device->baud = simple_strtoul(options, NULL, 0);
length = min(strcspn(options, " ") + 1,
(size_t)(sizeof(device->options)));
strlcpy(device->options, options, length);