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usb: common: convert to use match_string() helper 

The new helper returns index of the mathing string in an array.  We
would use it here.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Heikki Krogerus 2016-03-17 14:22:38 -07:00 committed by Linus Torvalds
parent 9adb9254f4
commit efc2cd7937
1 changed files with 8 additions and 14 deletions
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22
drivers/usb/common/common.c
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@ -64,18 +64,15 @@ EXPORT_SYMBOL_GPL(usb_speed_string);
enum usb_device_speed usb_get_maximum_speed(struct device *dev)
{
const char *maximum_speed;
int err;
int i;
int ret;
err = device_property_read_string(dev, "maximum-speed", &maximum_speed);
if (err < 0)
ret = device_property_read_string(dev, "maximum-speed", &maximum_speed);
if (ret < 0)
return USB_SPEED_UNKNOWN;
for (i = 0; i < ARRAY_SIZE(speed_names); i++)
if (strcmp(maximum_speed, speed_names[i]) == 0)
return i;
ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed);
return USB_SPEED_UNKNOWN;
return (ret < 0) ? USB_SPEED_UNKNOWN : ret;
}
EXPORT_SYMBOL_GPL(usb_get_maximum_speed);
@ -109,13 +106,10 @@ static const char *const usb_dr_modes[] = {
static enum usb_dr_mode usb_get_dr_mode_from_string(const char *str)
{
int i;
int ret;
for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++)
if (!strcmp(usb_dr_modes[i], str))
return i;
return USB_DR_MODE_UNKNOWN;
ret = match_string(usb_dr_modes, ARRAY_SIZE(usb_dr_modes), str);
return (ret < 0) ? USB_DR_MODE_UNKNOWN : ret;
}
enum usb_dr_mode usb_get_dr_mode(struct device *dev)