drivers/usb/serial/usb-wwan.h

File Facts

System

Linux kernel

Corpus path

drivers/usb/serial/usb-wwan.h

Extension

.h

Size

1982 bytes

Lines

65

Domain

Driver Families

Bucket

drivers/usb

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• struct usb_wwan_intf_private
• struct usb_wwan_port_private

Annotated Snippet

struct usb_wwan_intf_private {
	spinlock_t susp_lock;
	unsigned int suspended:1;
	unsigned int use_send_setup:1;
	unsigned int use_zlp:1;
	int in_flight;
	unsigned int open_ports;
	void *private;
};

struct usb_wwan_port_private {
	/* Input endpoints and buffer for this port */
	struct urb *in_urbs[N_IN_URB];
	u8 *in_buffer[N_IN_URB];
	/* Output endpoints and buffer for this port */
	struct urb *out_urbs[N_OUT_URB];
	u8 *out_buffer[N_OUT_URB];
	unsigned long out_busy;	/* Bit vector of URBs in use */
	struct usb_anchor delayed;

	/* Settings for the port */
	int rts_state;		/* Handshaking pins (outputs) */
	int dtr_state;
	int cts_state;		/* Handshaking pins (inputs) */
	int dsr_state;
	int dcd_state;
	int ri_state;

	unsigned long tx_start_time[N_OUT_URB];
};

#endif /* __LINUX_USB_USB_WWAN */

Annotation

• Detected declarations: `struct usb_wwan_intf_private`, `struct usb_wwan_port_private`.
• Atlas domain: Driver Families / drivers/usb.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.