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| author | Sven Peter <sven@kernel.org> | 2025-10-15 15:40:42 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-18 13:55:23 +0100 |
| commit | 8404a1b1f5f167151b6e83cff2a010d61c2425d7 (patch) | |
| tree | 32e6e0dbee0302eafe6d7c4d59545a9916515fbc | |
| parent | 6c36af8083503806e04be4da4240d3743b28072d (diff) | |
| download | linux-8404a1b1f5f167151b6e83cff2a010d61c2425d7.tar.gz linux-8404a1b1f5f167151b6e83cff2a010d61c2425d7.tar.bz2 linux-8404a1b1f5f167151b6e83cff2a010d61c2425d7.zip | |
usb: dwc3: dwc3_power_off_all_roothub_ports: Use ioremap_np when required
commit 5ed9cc71432a8adf3c42223c935f714aac29901b upstream.
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 <Thinh.Nguyen@synopsys.com>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Sven Peter <sven@kernel.org>
Link: https://patch.msgid.link/20251015-b4-aplpe-dwc3-v2-2-cbd65a2d511a@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/dwc3/host.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c index e0533cee6870..f040d67a10b0 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 is not mapped yet, do it temperary 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; |