diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-08-04 16:48:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-18 15:02:06 +0200 |
| commit | 465ddff7e4867fcb65e27fa7ff4d0bb0999e4500 (patch) | |
| tree | e8887c768e87684b8a5ffe500be4ef6cea26efa6 /drivers/tty/serial | |
| parent | 145f5646be67eb5613d9606c5cb5139bb00df8b9 (diff) | |
serial: sa1100: use platform_get_resource()
Use platform_get_resource() to fetch the memory resource
instead of open-coded variant.
While here, fail the probe if no resource found or no port is added.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200804134807.11589-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/sa1100.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/tty/serial/sa1100.c b/drivers/tty/serial/sa1100.c index 75c2a22895f9..f5fab1dd96bc 100644 --- a/drivers/tty/serial/sa1100.c +++ b/drivers/tty/serial/sa1100.c @@ -879,22 +879,20 @@ static int sa1100_serial_add_one_port(struct sa1100_port *sport, struct platform static int sa1100_serial_probe(struct platform_device *dev) { - struct resource *res = dev->resource; + struct resource *res; int i; - for (i = 0; i < dev->num_resources; i++, res++) - if (res->flags & IORESOURCE_MEM) - break; - - if (i < dev->num_resources) { - for (i = 0; i < NR_PORTS; i++) { - if (sa1100_ports[i].port.mapbase != res->start) - continue; + res = platform_get_resource(dev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; - sa1100_serial_add_one_port(&sa1100_ports[i], dev); + for (i = 0; i < NR_PORTS; i++) + if (sa1100_ports[i].port.mapbase == res->start) break; - } - } + if (i == NR_PORTS) + return -ENODEV; + + sa1100_serial_add_one_port(&sa1100_ports[i], dev); return 0; } |