diff options
| 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/variax.c | |
| parent | be8fd484e9c23e49ffe1d163c8d32c8c7b745941 (diff) | |
ALSA: line6: Use container_of()
... instead of unconditional cast.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/line6/variax.c')
| -rw-r--r-- | sound/usb/line6/variax.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sound/usb/line6/variax.c b/sound/usb/line6/variax.c index fb114156b7ca..0d0de907d497 100644 --- a/sound/usb/line6/variax.c +++ b/sound/usb/line6/variax.c @@ -47,6 +47,8 @@ struct usb_line6_variax { int startup_progress; }; +#define line6_to_variax(x) container_of(x, struct usb_line6_variax, line6) + #define VARIAX_OFFSET_ACTIVATE 7 /* @@ -86,7 +88,7 @@ static void variax_activate_async(struct usb_line6_variax *variax, int a) static void variax_startup(struct usb_line6 *line6) { - struct usb_line6_variax *variax = (struct usb_line6_variax *)line6; + struct usb_line6_variax *variax = line6_to_variax(line6); switch (variax->startup_progress) { case VARIAX_STARTUP_VERSIONREQ: @@ -115,7 +117,7 @@ static void variax_startup(struct usb_line6 *line6) */ static void line6_variax_process_message(struct usb_line6 *line6) { - struct usb_line6_variax *variax = (struct usb_line6_variax *) line6; + struct usb_line6_variax *variax = line6_to_variax(line6); const unsigned char *buf = variax->line6.buffer_message; switch (buf[0]) { @@ -149,7 +151,7 @@ static void line6_variax_process_message(struct usb_line6 *line6) */ static void line6_variax_disconnect(struct usb_line6 *line6) { - struct usb_line6_variax *variax = (struct usb_line6_variax *)line6; + struct usb_line6_variax *variax = line6_to_variax(line6); kfree(variax->buffer_activate); } @@ -160,7 +162,7 @@ static void line6_variax_disconnect(struct usb_line6 *line6) static int variax_init(struct usb_line6 *line6, const struct usb_device_id *id) { - struct usb_line6_variax *variax = (struct usb_line6_variax *) line6; + struct usb_line6_variax *variax = line6_to_variax(line6); int err; line6->process_message = line6_variax_process_message; |