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mfd: omap-usb-host: Use match_string() helper 

match_string() returns the index of an array for a matching string,
which can be used intead of open coded variant.

Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Yisheng Xie 2018-05-21 19:57:39 +08:00 committed by Lee Jones
parent d95c9760d9
commit 4c74a1fc94
1 changed files with 2 additions and 22 deletions
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24
drivers/mfd/omap-usb-host.c
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@ -153,27 +153,6 @@ static const char * const port_modes[] = {
[OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM] = "ohci-tll-2pin-dpdm",
};
/**
* omap_usbhs_get_dt_port_mode - Get the 'enum usbhs_omap_port_mode'
* from the port mode string.
* @mode: The port mode string, usually obtained from device tree.
*
* The function returns the 'enum usbhs_omap_port_mode' that matches the
* provided port mode string as per the port_modes table.
* If no match is found it returns -ENODEV
*/
static int omap_usbhs_get_dt_port_mode(const char *mode)
{
int i;
for (i = 0; i < ARRAY_SIZE(port_modes); i++) {
if (!strcmp(mode, port_modes[i]))
return i;
}
return -ENODEV;
}
static struct platform_device *omap_usbhs_alloc_child(const char *name,
struct resource *res, int num_resources, void *pdata,
size_t pdata_size, struct device *dev)
@ -529,7 +508,8 @@ static int usbhs_omap_get_dt_pdata(struct device *dev,
if (ret < 0)
continue;
ret = omap_usbhs_get_dt_port_mode(mode);
/* get 'enum usbhs_omap_port_mode' from port mode string */
ret = match_string(port_modes, ARRAY_SIZE(port_modes), mode);
if (ret < 0) {
dev_warn(dev, "Invalid port%d-mode \"%s\" in device tree\n",
i, mode);