On 04.03.2016 18:19, Thierry Reding wrote:
From: Thierry Reding <treding@xxxxxxxxxx>
Add support for the on-chip XUSB controller present on Tegra SoCs. This
controller, when loaded with external firmware, exposes an interface
compliant with xHCI. This driver loads the firmware, starts the
controller, and is able to service host-specific messages sent by the
controller's firmware.
The controller also supports USB device mode as well as powergating
of the SuperSpeed and host-controller logic when not in use, but
support for these is not yet implemented.
Based on work by:
Ajay Gupta <ajayg@xxxxxxxxxx>
Bharath Yadav <byadav@xxxxxxxxxx>
Andrew Bresticker <abrestic@xxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Mathias Nyman <mathias.nyman@xxxxxxxxx>
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
...
+static int tegra_xusb_remove(struct platform_device *pdev)
+{
+ struct tegra_xusb *tegra = platform_get_drvdata(pdev);
> + struct usb_hcd *hcd = tegra->hcd;
+ struct xhci_hcd *xhci;
+
+ if (tegra->fw_loaded) {
+ xhci = hcd_to_xhci(hcd);
+ usb_remove_hcd(xhci->shared_hcd);
+ usb_put_hcd(xhci->shared_hcd);
+ usb_remove_hcd(hcd);
+ tegra_xusb_padctl_put(tegra->padctl);
+ usb_put_hcd(hcd);
+ kfree(xhci);
Don't free xhci here, xhci is a part of hcd (hcd_priv) and hcd is already freed in usb_put_hcd()
Other than that I can't see any issues
-Mathias
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