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 <zon...@gmail.com>
---
drivers/usb/gadget/function/f_uac2.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/function/f_uac2.c
b/drivers/usb/gadget/function/f_uac2.c
index efe8add..9c8831d 100644
--- a/drivers/usb/gadget/function/f_uac2.c
+++ b/drivers/usb/gadget/function/f_uac2.c
@@ -140,6 +140,12 @@ struct snd_uac2_chip *pdev_to_uac2(struct platform_device
*p)
}
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)
{
uint num = 0;
@@ -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;
--
2.1.0
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