USB_HCD_PCI_REMOVE(9) Host Controller APIs USB_HCD_PCI_REMOVE(9)NAME
usb_hcd_pci_remove - shutdown processing for PCI-based HCDs
void usb_hcd_pci_remove(struct pci_dev * dev);
USB Host Controller being removed
Reverses the effect of usb_hcd_pci_probe, first invoking the HCD's stop method. It is always called from a thread context, normally
"rmmod", "apmd", or something similar.
Store this function in the HCD's struct pci_driver as remove.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 USB_HCD_PCI_REMOVE(9)
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USB_CONTROL_MSG(9) USB Core APIs USB_CONTROL_MSG(9)NAME
usb_control_msg - Builds a control urb, sends it off and waits for completion
int usb_control_msg(struct usb_device * dev, unsigned int pipe, __u8 request, __u8 requesttype, __u16 value, __u16 index, void * data,
__u16 size, int timeout);
pointer to the usb device to send the message to
endpoint "pipe" to send the message to
USB message request value
USB message request type value
USB message value
USB message index value
pointer to the data to send
length in bytes of the data to send
time in msecs to wait for the message to complete before timing out (if 0 the wait is forever)
This function sends a simple control message to a specified endpoint and waits for the message to complete, or timeout.
Don't use this function from within an interrupt context, like a bottom half handler. If you need an asynchronous message, or need to send
a message from within interrupt context, use usb_submit_urb. If a thread in your driver uses this call, make sure your disconnect method
can wait for it to complete. Since you don't have a handle on the URB used, you can't cancel the request.
If successful, the number of bytes transferred. Otherwise, a negative error number.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 USB_CONTROL_MSG(9)
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