From: Sven Peter Date: Wed, 15 Oct 2025 15:40:42 +0000 (+0000) Subject: usb: dwc3: dwc3_power_off_all_roothub_ports: Use ioremap_np when required X-Git-Tag: v6.19-rc1~63^2~87 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5ed9cc71432a8adf3c42223c935f714aac29901b;p=thirdparty%2Fkernel%2Flinux.git usb: dwc3: dwc3_power_off_all_roothub_ports: Use ioremap_np when required On Apple Silicon machines we can't use ioremap() / Device-nGnRE to map most regions but must use ioremap_np() / Device-nGnRnE whenever IORESOURCE_MEM_NONPOSTED is set. Make sure this is also done inside dwc3_power_off_all_roothub_ports to prevent SErrors. Fixes: 2d2a3349521d ("usb: dwc3: Add workaround for host mode VBUS glitch when boot") Cc: stable@kernel.org Acked-by: Thinh Nguyen Reviewed-by: Neal Gompa Signed-off-by: Sven Peter Link: https://patch.msgid.link/20251015-b4-aplpe-dwc3-v2-2-cbd65a2d511a@kernel.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c index 1c513bf8002ec..e77fd86d09cf0 100644 --- a/drivers/usb/dwc3/host.c +++ b/drivers/usb/dwc3/host.c @@ -37,7 +37,10 @@ static void dwc3_power_off_all_roothub_ports(struct dwc3 *dwc) /* xhci regs are not mapped yet, do it temporarily here */ if (dwc->xhci_resources[0].start) { - xhci_regs = ioremap(dwc->xhci_resources[0].start, DWC3_XHCI_REGS_END); + if (dwc->xhci_resources[0].flags & IORESOURCE_MEM_NONPOSTED) + xhci_regs = ioremap_np(dwc->xhci_resources[0].start, DWC3_XHCI_REGS_END); + else + xhci_regs = ioremap(dwc->xhci_resources[0].start, DWC3_XHCI_REGS_END); if (!xhci_regs) { dev_err(dwc->dev, "Failed to ioremap xhci_regs\n"); return;