diff options
Diffstat (limited to 'drivers/usb/dwc3/debugfs.c')
| -rw-r--r-- | drivers/usb/dwc3/debugfs.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index b5370e78150..ca4be0afc33 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -443,29 +443,26 @@ static ssize_t dwc3_mode_write(struct file *file, struct seq_file *s = file->private_data; struct dwc3 *dwc = s->private; unsigned long flags; - u32 reg; + u32 mode = 0; char buf[32]; if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; - spin_lock_irqsave(&dwc->lock, flags); - reg = dwc3_readl(dwc->regs, DWC3_GCTL); - - reg &= ~(DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG)); - if (!strncmp(buf, "host", 4)) - reg |= DWC3_GCTL_PRTCAP(DWC3_GCTL_PRTCAP_HOST); + mode |= DWC3_GCTL_PRTCAP_HOST; if (!strncmp(buf, "device", 6)) - reg |= DWC3_GCTL_PRTCAP(DWC3_GCTL_PRTCAP_DEVICE); + mode |= DWC3_GCTL_PRTCAP_DEVICE; if (!strncmp(buf, "otg", 3)) - reg |= DWC3_GCTL_PRTCAP(DWC3_GCTL_PRTCAP_OTG); - - dwc3_writel(dwc->regs, DWC3_GCTL, reg); - spin_unlock_irqrestore(&dwc->lock, flags); + mode |= DWC3_GCTL_PRTCAP_OTG; + if (mode) { + spin_lock_irqsave(&dwc->lock, flags); + dwc3_set_mode(dwc, mode); + spin_unlock_irqrestore(&dwc->lock, flags); + } return count; } |