/* * u_serial.h - interface to USB gadget "serial port"/TTY utilities * * Copyright (C) 2008 David Brownell * Copyright (C) 2008 by Nokia Corporation * * This software is distributed under the terms of the GNU General * Public License ("GPL") as published by the Free Software Foundation, * either version 2 of that License or (at your option) any later version. */ #ifndef __U_SERIAL_H #define __U_SERIAL_H #include #include #define MAX_U_SERIAL_PORTS 4 struct f_serial_opts { struct usb_function_instance func_inst; u8 port_num; }; /* * One non-multiplexed "serial" I/O port ... there can be several of these * on any given USB peripheral device, if it provides enough endpoints. * * The "u_serial" utility component exists to do one thing: manage TTY * style I/O using the USB peripheral endpoints listed here, including * hookups to sysfs and /dev for each logical "tty" device. * * REVISIT at least ACM could support tiocmget() if needed. * * REVISIT someday, allow multiplexing several TTYs over these endpoints. */ struct gserial { struct usb_function func; /* port is managed by gserial_{connect,disconnect} */ struct gs_port *ioport; struct usb_ep *in; struct usb_ep *out; /* REVISIT avoid this CDC-ACM support harder ... */ struct usb_cdc_line_coding port_line_coding; /* 9600-8-N-1 etc */ /* notification callbacks */ void (*connect)(struct gserial *p); void (*disconnect)(struct gserial *p); int (*send_break)(struct gserial *p, int duration); }; /* utilities to allocate/free request and buffer */ struct usb_request *gs_alloc_req(struct usb_ep *ep, unsigned len, gfp_t flags); void gs_free_req(struct usb_ep *, struct usb_request *req); /* management of individual TTY ports */ int gserial_alloc_line(unsigned char *port_line); void gserial_free_line(unsigned char port_line); /* connect/disconnect is handled by individual functions */ int gserial_connect(struct gserial *, u8 port_num); void gserial_disconnect(struct gserial *); /* functions are bound to configurations by a config or gadget driver */ int gser_bind_config(struct usb_configuration *c, u8 port_num); int obex_bind_config(struct usb_configuration *c, u8 port_num); #endif /* __U_SERIAL_H */ ff
path: root/kernel/signal.c
diff options
context:
space:
mode:
authorHelge Deller <deller@gmx.de>2017-01-28 11:52:02 +0100
committerHelge Deller <deller@gmx.de>2017-01-28 21:54:23 +0100
commit2ad5d52d42810bed95100a3d912679d8864421ec (patch)
tree7f93e2f906b1c86f5b76c0f4c0978d41a8a29861 /kernel/signal.c
parent83b5d1e3d3013dbf90645a5d07179d018c8243fa (diff)
parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header
In swab.h the "#if BITS_PER_LONG > 32" breaks compiling userspace programs if BITS_PER_LONG is #defined by userspace with the sizeof() compiler builtin. Solve this problem by using __BITS_PER_LONG instead. Since we now #include asm/bitsperlong.h avoid further potential userspace pollution by moving the #define of SHIFT_PER_LONG to bitops.h which is not exported to userspace. This patch unbreaks compiling qemu on hppa/parisc. Signed-off-by: Helge Deller <deller@gmx.de> Cc: <stable@vger.kernel.org>
Diffstat (limited to 'kernel/signal.c')