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Merge "usb: dwc3-msm: Prevent switch to peripheral for host-mode only core"

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qctecmdr 2021-02-19 22:41:24 -08:00 • committed by Gerrit - the friendly Code Review server
commit d7006445cf
1 changed files with 6 additions and 0 deletions
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6
drivers/usb/dwc3/dwc3-msm.c
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@ -3869,8 +3869,14 @@ static ssize_t mode_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct dwc3_msm *mdwc = dev_get_drvdata(dev);
struct dwc3 *dwc = platform_get_drvdata(mdwc->dwc3);
if (sysfs_streq(buf, "peripheral")) {
if (dwc->dr_mode == USB_DR_MODE_HOST) {
dev_err(dev, "Core supports host mode only.\n");
return -EINVAL;
}
mdwc->vbus_active = true;
mdwc->id_state = DWC3_ID_FLOAT;
} else if (sysfs_streq(buf, "host")) {