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authorTakashi Iwai <tiwai@suse.de>2020-11-23 09:53:33 +0100
committerTakashi Iwai <tiwai@suse.de>2020-11-23 15:15:36 +0100
commitcab941b7e5cf054502b01f776db724400ee5c1b6 (patch)
treedc80dec664d8f67b7ce213bd0d7cfb3b7cf42717 /sound/usb/clock.c
parentALSA: usb-audio: Fix possible stall of implicit fb packet ring-buffer (diff)
downloadlinux-cab941b7e5cf054502b01f776db724400ee5c1b6.tar.xz
linux-cab941b7e5cf054502b01f776db724400ee5c1b6.zip
ALSA: usb-audio: Constify audioformat pointer references
The audioformat is referred in many places but most of usages are read-only. Let's add const prefix in the possible places. Tested-by: Keith Milner <kamilner@superlative.org> Tested-by: Dylan Robinson <dylan_robinson@motu.com> Link: https://lore.kernel.org/r/20201123085347.19667-28-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/clock.c')
-rw-r--r--sound/usb/clock.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/sound/usb/clock.c b/sound/usb/clock.c
index b869a711afbf..e940dcee792b 100644
--- a/sound/usb/clock.c
+++ b/sound/usb/clock.c
@@ -152,7 +152,7 @@ static int uac_clock_selector_set_val(struct snd_usb_audio *chip, int selector_i
}
static bool uac_clock_source_is_valid_quirk(struct snd_usb_audio *chip,
- struct audioformat *fmt,
+ const struct audioformat *fmt,
int source_id)
{
bool ret = false;
@@ -215,7 +215,7 @@ static bool uac_clock_source_is_valid_quirk(struct snd_usb_audio *chip,
}
static bool uac_clock_source_is_valid(struct snd_usb_audio *chip,
- struct audioformat *fmt,
+ const struct audioformat *fmt,
int source_id)
{
int err;
@@ -264,7 +264,7 @@ static bool uac_clock_source_is_valid(struct snd_usb_audio *chip,
}
static int __uac_clock_find_source(struct snd_usb_audio *chip,
- struct audioformat *fmt, int entity_id,
+ const struct audioformat *fmt, int entity_id,
unsigned long *visited, bool validate)
{
struct uac_clock_source_descriptor *source;
@@ -358,7 +358,7 @@ static int __uac_clock_find_source(struct snd_usb_audio *chip,
}
static int __uac3_clock_find_source(struct snd_usb_audio *chip,
- struct audioformat *fmt, int entity_id,
+ const struct audioformat *fmt, int entity_id,
unsigned long *visited, bool validate)
{
struct uac3_clock_source_descriptor *source;
@@ -464,7 +464,7 @@ static int __uac3_clock_find_source(struct snd_usb_audio *chip,
* Returns the clock source UnitID (>=0) on success, or an error.
*/
int snd_usb_clock_find_source(struct snd_usb_audio *chip,
- struct audioformat *fmt, bool validate)
+ const struct audioformat *fmt, bool validate)
{
DECLARE_BITMAP(visited, 256);
memset(visited, 0, sizeof(visited));
@@ -482,7 +482,7 @@ int snd_usb_clock_find_source(struct snd_usb_audio *chip,
}
static int set_sample_rate_v1(struct snd_usb_audio *chip,
- struct audioformat *fmt, int rate)
+ const struct audioformat *fmt, int rate)
{
struct usb_device *dev = chip->dev;
struct usb_host_interface *alts;
@@ -611,7 +611,7 @@ int snd_usb_set_sample_rate_v2v3(struct snd_usb_audio *chip,
}
static int set_sample_rate_v2v3(struct snd_usb_audio *chip,
- struct audioformat *fmt, int rate)
+ const struct audioformat *fmt, int rate)
{
int cur_rate, prev_rate;
int clock;
@@ -663,7 +663,7 @@ validation:
}
int snd_usb_init_sample_rate(struct snd_usb_audio *chip,
- struct audioformat *fmt, int rate)
+ const struct audioformat *fmt, int rate)
{
usb_audio_dbg(chip, "%d:%d Set sample rate %d, clock %d\n",
fmt->iface, fmt->altsetting, rate, fmt->clock);