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ALSA: usx2y: More constifications

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Apply const prefix to each possible place: the string array and the
parameter tables and callers.

Just for minor optimization and no functional changes.

Link: https://lore.kernel.org/r/20200105144823.29547-23-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2020-01-05 15:47:37 +01:00
parent 55a6921bf1
commit 7ec03ff7c7
2 changed files with 4 additions and 4 deletions
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2
sound/usb/usx2y/usX2Yhwdep.c
View File

@ -94,7 +94,7 @@ static __poll_t snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll
static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw,
struct snd_hwdep_dsp_status *info)
{
static char *type_ids[USX2Y_TYPE_NUMS] = {
static const char * const type_ids[USX2Y_TYPE_NUMS] = {
[USX2Y_TYPE_122] = "us122",
[USX2Y_TYPE_224] = "us224",
[USX2Y_TYPE_428] = "us428",

6
sound/usb/usx2y/usbusx2yaudio.c
View File

@ -549,7 +549,7 @@ static int snd_usX2Y_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
* if sg buffer is supported on the later version of alsa, we'll follow
* that.
*/
static struct s_c2
static const struct s_c2
{
char c1, c2;
}
@ -589,7 +589,7 @@ static struct s_c2
{ 0x18, 0x7C},
{ 0x18, 0x7E}
};
static struct s_c2 SetRate48000[] =
static const struct s_c2 SetRate48000[] =
{
{ 0x14, 0x09}, // this line sets 48000, well actually a little less
{ 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
@ -642,7 +642,7 @@ static int usX2Y_rate_set(struct usX2Ydev *usX2Y, int rate)
int err = 0, i;
struct snd_usX2Y_urbSeq *us = NULL;
int *usbdata = NULL;
struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100;
const struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100;
if (usX2Y->rate != rate) {
us = kzalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL);