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| author | Takashi Iwai <tiwai@suse.de> | 2019-05-28 09:05:31 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-05-28 09:05:31 +0200 |
| commit | f23a09eea1e7947611d985d8cd13d55428ff0af8 (patch) | |
| tree | 430c10328cbfeb92c08c9712d6bdf1a98513771f /sound/usb/line6/pod.c | |
| parent | ALSA: line6: Drop superfluous timer helper function (diff) | |
| download | linux-f23a09eea1e7947611d985d8cd13d55428ff0af8.tar.xz linux-f23a09eea1e7947611d985d8cd13d55428ff0af8.zip | |
ALSA: line6: Use container_of()
... instead of unconditional cast.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/line6/pod.c')
| -rw-r--r-- | sound/usb/line6/pod.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/sound/usb/line6/pod.c b/sound/usb/line6/pod.c index 995e6ccc8122..9ea720b4b2ab 100644 --- a/sound/usb/line6/pod.c +++ b/sound/usb/line6/pod.c @@ -74,6 +74,8 @@ struct usb_line6_pod { int device_id; }; +#define line6_to_pod(x) container_of(x, struct usb_line6_pod, line6) + #define POD_SYSEX_CODE 3 /* *INDENT-OFF* */ @@ -177,7 +179,7 @@ static char *pod_alloc_sysex_buffer(struct usb_line6_pod *pod, int code, */ static void line6_pod_process_message(struct usb_line6 *line6) { - struct usb_line6_pod *pod = (struct usb_line6_pod *) line6; + struct usb_line6_pod *pod = line6_to_pod(line6); const unsigned char *buf = pod->line6.buffer_message; if (memcmp(buf, pod_version_header, sizeof(pod_version_header)) == 0) { @@ -274,7 +276,7 @@ static ssize_t device_id_show(struct device *dev, static void pod_startup(struct usb_line6 *line6) { - struct usb_line6_pod *pod = (struct usb_line6_pod *) line6; + struct usb_line6_pod *pod = line6_to_pod(line6); switch (pod->startup_progress) { case POD_STARTUP_VERSIONREQ: @@ -328,7 +330,7 @@ static int snd_pod_control_monitor_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); - struct usb_line6_pod *pod = (struct usb_line6_pod *)line6pcm->line6; + struct usb_line6_pod *pod = line6_to_pod(line6pcm->line6); ucontrol->value.integer.value[0] = pod->monitor_level; return 0; @@ -339,7 +341,7 @@ static int snd_pod_control_monitor_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); - struct usb_line6_pod *pod = (struct usb_line6_pod *)line6pcm->line6; + struct usb_line6_pod *pod = line6_to_pod(line6pcm->line6); if (ucontrol->value.integer.value[0] == pod->monitor_level) return 0; @@ -368,7 +370,7 @@ static int pod_init(struct usb_line6 *line6, const struct usb_device_id *id) { int err; - struct usb_line6_pod *pod = (struct usb_line6_pod *) line6; + struct usb_line6_pod *pod = line6_to_pod(line6); line6->process_message = line6_pod_process_message; line6->startup = pod_startup; |