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usb: gadget: f_uac2: introduce agdev_to_uac2_opts

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Add a simple container_of() wrapper to get a struct f_uac2_opts from a
struct struct audio_dev. Use it in two places where it is currently
open-coded.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Daniel Mack 2014-08-27 19:09:05 +02:00 committed by Felipe Balbi
parent a8147dabe5
commit 254b3bf68b
1 changed files with 8 additions and 2 deletions
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10
drivers/usb/gadget/function/f_uac2.c
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@ -139,6 +139,12 @@ struct snd_uac2_chip *pdev_to_uac2(struct platform_device *p)
return container_of(p, struct snd_uac2_chip, pdev);
}
static inline
struct f_uac2_opts *agdev_to_uac2_opts(struct audio_dev *agdev)
{
return container_of(agdev->func.fi, struct f_uac2_opts, func_inst);
}
static inline
uint num_channels(uint chanmask)
{
@ -1168,7 +1174,7 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
int value = -EOPNOTSUPP;
int p_srate, c_srate;
opts = container_of(agdev->func.fi, struct f_uac2_opts, func_inst);
opts = agdev_to_uac2_opts(agdev);
p_srate = opts->p_srate;
c_srate = opts->c_srate;
@ -1210,7 +1216,7 @@ in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr)
int value = -EOPNOTSUPP;
int p_srate, c_srate;
opts = container_of(agdev->func.fi, struct f_uac2_opts, func_inst);
opts = agdev_to_uac2_opts(agdev);
p_srate = opts->p_srate;
c_srate = opts->c_srate;