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snd_usb_pipe_sanity_check() is a great function, so let's move it into the USB core so that other parts of the kernel, including the USB core, can call it. Name it usb_pipe_type_check() to match the existing usb_urb_ep_type_check() call, which now uses this function. Cc: Jaroslav Kysela <perex@perex.cz> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Cc: Eli Billauer <eli.billauer@gmail.com> Cc: Emiliano Ingrassia <ingrassia@epigenesys.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Alexander Tsoy <alexander@tsoy.me> Cc: "Geoffrey D. Bennett" <g@b4.vu> Cc: Jussi Laako <jussi@sonarnerd.net> Cc: Nick Kossifidis <mickflemm@gmail.com> Cc: Dmitry Panchenko <dmitry@d-systems.ee> Cc: Chris Wulff <crwulff@gmail.com> Cc: Jesus Ramos <jesus-ramos@live.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20200914153756.3412156-2-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __USBAUDIO_HELPER_H
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#define __USBAUDIO_HELPER_H
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unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
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void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
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void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
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int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
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__u8 request, __u8 requesttype, __u16 value, __u16 index,
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void *data, __u16 size);
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unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip,
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struct usb_host_interface *alts);
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/*
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* retrieve usb_interface descriptor from the host interface
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* (conditional for compatibility with the older API)
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*/
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#define get_iface_desc(iface) (&(iface)->desc)
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#define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc)
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#define get_ep_desc(ep) (&(ep)->desc)
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#define get_cfg_desc(cfg) (&(cfg)->desc)
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#define snd_usb_get_speed(dev) ((dev)->speed)
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static inline int snd_usb_ctrl_intf(struct snd_usb_audio *chip)
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{
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return get_iface_desc(chip->ctrl_intf)->bInterfaceNumber;
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}
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/* in validate.c */
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bool snd_usb_validate_audio_desc(void *p, int protocol);
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bool snd_usb_validate_midi_desc(void *p);
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#endif /* __USBAUDIO_HELPER_H */
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