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[ALSA] hda-codec - Allocate amp hash array dynamically 

Modules: HDA Codec driver

Allocate amp hash array dynamically instead of static array.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-11-07 14:38:44 +01:00 committed by Jaroslav Kysela
parent 88026842b0
commit d031166fec
2 changed files with 21 additions and 4 deletions
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22
sound/pci/hda/hda_codec.c
View File

@ -465,6 +465,7 @@ static void snd_hda_codec_free(struct hda_codec *codec)
codec->bus->caddr_tbl[codec->addr] = NULL;
if (codec->patch_ops.free)
codec->patch_ops.free(codec);
kfree(codec->amp_info);
kfree(codec);
}
@ -586,6 +587,8 @@ static void init_amp_hash(struct hda_codec *codec)
{
memset(codec->amp_hash, 0xff, sizeof(codec->amp_hash));
codec->num_amp_entries = 0;
codec->amp_info_size = 0;
codec->amp_info = NULL;
}
/* query the hash. allocate an entry if not found. */
@ -603,9 +606,22 @@ static struct hda_amp_info *get_alloc_amp_hash(struct hda_codec *codec, u32 key)
}
/* add a new hash entry */
if (codec->num_amp_entries >= ARRAY_SIZE(codec->amp_info)) {
snd_printk(KERN_ERR "hda_codec: Tooooo many amps!\n");
return NULL;
if (codec->num_amp_entries >= codec->amp_info_size) {
/* reallocate the array */
int new_size = codec->amp_info_size + 64;
struct hda_amp_info *new_info = kcalloc(new_size, sizeof(struct hda_amp_info),
GFP_KERNEL);
if (! new_info) {
snd_printk(KERN_ERR "hda_codec: can't malloc amp_info\n");
return NULL;
}
if (codec->amp_info) {
memcpy(new_info, codec->amp_info,
codec->amp_info_size * sizeof(struct hda_amp_info));
kfree(codec->amp_info);
}
codec->amp_info_size = new_size;
codec->amp_info = new_info;
}
cur = codec->num_amp_entries++;
info = &codec->amp_info[cur];

3
sound/pci/hda/hda_codec.h
View File

@ -545,7 +545,8 @@ struct hda_codec {
/* hash for amp access */
u16 amp_hash[32];
int num_amp_entries;
struct hda_amp_info amp_info[128]; /* big enough? */
int amp_info_size;
struct hda_amp_info *amp_info;
struct semaphore spdif_mutex;
unsigned int spdif_status; /* IEC958 status bits */