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usb: Reattach kernel driver on close #171

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usb: Reattach kernel driver on close #171

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4 changes: 4 additions & 0 deletions usb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ struct qdl_device_usb {

int in_ep;
int out_ep;
int intf;

size_t in_maxpktsize;
size_t out_maxpktsize;
Expand Down Expand Up @@ -156,6 +157,7 @@ static int usb_try_open(libusb_device *dev, struct qdl_device_usb *qdl, const ch
qdl->usb_handle = handle;
qdl->in_ep = in;
qdl->out_ep = out;
qdl->intf = ifc->bInterfaceNumber;
qdl->in_maxpktsize = in_size;
qdl->out_maxpktsize = out_size;

Expand Down Expand Up @@ -227,6 +229,8 @@ static void usb_close(struct qdl_device *qdl)
{
struct qdl_device_usb *qdl_usb = container_of(qdl, struct qdl_device_usb, base);

libusb_release_interface(qdl_usb->usb_handle, qdl_usb->intf);
libusb_attach_kernel_driver(qdl_usb->usb_handle, qdl_usb->intf);
libusb_close(qdl_usb->usb_handle);
libusb_exit(NULL);
}
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