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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2018-10-03 08:21:52 +0900
committerTakashi Iwai <tiwai@suse.de>2018-10-04 07:54:07 +0200
commit784fffbcfe117b508ff628cf296541ab70463140 (patch)
tree2be5c60a9548f5bddbca8789b09327814690317b
parenta3aaf7d2bd388caea2bd0fba266b815ac708c49d (diff)
downloadlinux-784fffbcfe117b508ff628cf296541ab70463140.tar.bz2
ALSA: fireworks: use managed-resource to maintain response buffer
ALSA fireworks driver allocates memory object to handle response from target unit. The object is used to initiate transaction unique to Fireworks board module. This can be released as managed-resource of 'struct snd_card.card_dev'. This commit uses managed-resource of the sound card device for this purpose. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/firewire/fireworks/fireworks.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/sound/firewire/fireworks/fireworks.c b/sound/firewire/fireworks/fireworks.c
index 2ff7b9cff9b0..f680e2f27806 100644
--- a/sound/firewire/fireworks/fireworks.c
+++ b/sound/firewire/fireworks/fireworks.c
@@ -189,8 +189,6 @@ static void efw_free(struct snd_efw *efw)
snd_efw_stream_destroy_duplex(efw);
snd_efw_transaction_remove_instance(efw);
- kfree(efw->resp_buf);
-
mutex_destroy(&efw->mutex);
fw_unit_put(efw->unit);
}
@@ -247,8 +245,9 @@ do_registration(struct work_struct *work)
/* prepare response buffer */
snd_efw_resp_buf_size = clamp(snd_efw_resp_buf_size,
SND_EFW_RESPONSE_MAXIMUM_BYTES, 4096U);
- efw->resp_buf = kzalloc(snd_efw_resp_buf_size, GFP_KERNEL);
- if (efw->resp_buf == NULL) {
+ efw->resp_buf = devm_kzalloc(&efw->card->card_dev,
+ snd_efw_resp_buf_size, GFP_KERNEL);
+ if (!efw->resp_buf) {
err = -ENOMEM;
goto error;
}
@@ -300,8 +299,6 @@ error:
snd_efw_transaction_remove_instance(efw);
snd_efw_stream_destroy_duplex(efw);
snd_card_free(efw->card);
- kfree(efw->resp_buf);
- efw->resp_buf = NULL;
dev_info(&efw->unit->device,
"Sound card registration failed: %d\n", err);
}