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Merge "usb: dwc3: Fix dwc3 version and revisions in remote wakeup path"

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QCTECMDR Service 2024-06-30 20:59:59 -07:00 • committed by Gerrit - the friendly Code Review server
commit 6d33a677e4
1 changed files with 6 additions and 9 deletions
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15
drivers/usb/dwc3/gadget.c
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@ -100,7 +100,7 @@ int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state)
* Wait until device controller is ready. Only applies to 1.94a and
* later RTL.
*/
if (dwc->revision >= DWC3_REVISION_194A) {
if (dwc3_is_usb3(dwc) && dwc->revision >= DWC3_REVISION_194A) {
while (--retries) {
reg = dwc3_readl(dwc->regs, DWC3_DSTS);
if (reg & DWC3_DSTS_DCNRD)
@ -124,7 +124,7 @@ int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state)
* The following code is racy when called from dwc3_gadget_wakeup,
* and is not needed, at least on newer versions
*/
if (dwc->revision >= DWC3_REVISION_194A)
if (dwc3_is_usb3(dwc) && dwc->revision >= DWC3_REVISION_194A)
return 0;
/* wait for a change in DSTS */
@ -2116,13 +2116,10 @@ static int dwc3_gadget_remote_wakeup(struct dwc3 *dwc)
goto out;
}
/* Recent versions do this automatically */
if (dwc->revision < DWC3_REVISION_194A) {
/* write zeroes to Link Change Request */
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
}
/* write zeroes to Link Change Request */
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
spin_unlock_irqrestore(&dwc->lock, flags);
enable_irq(dwc->irq);