From 316e38ef776663a7a4c5d76438c42c948c574df4 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 22 Feb 2024 12:15:08 +0100 Subject: [PATCH] ALSA: seq: ump: Use automatic cleanup of kfree() There are common patterns where a temporary buffer is allocated and freed at the exit, and those can be simplified with the recent cleanup mechanism via __free(kfree). No functional changes, only code refactoring. Signed-off-by: Takashi Iwai Link: https://lore.kernel.org/r/20240222111509.28390-9-tiwai@suse.de --- sound/core/seq/seq_ump_client.c | 33 ++++++++++++--------------------- 1 file changed, 12 insertions(+), 21 deletions(-) diff --git a/sound/core/seq/seq_ump_client.c b/sound/core/seq/seq_ump_client.c index 2db371d79930..ccac2d3a9fbc 100644 --- a/sound/core/seq/seq_ump_client.c +++ b/sound/core/seq/seq_ump_client.c @@ -217,15 +217,12 @@ static void fill_port_info(struct snd_seq_port_info *port, static int seq_ump_group_init(struct seq_ump_client *client, int group_index) { struct seq_ump_group *group = &client->groups[group_index]; - struct snd_seq_port_info *port; + struct snd_seq_port_info *port __free(kfree) = NULL; struct snd_seq_port_callback pcallbacks; - int err; port = kzalloc(sizeof(*port), GFP_KERNEL); - if (!port) { - err = -ENOMEM; - goto error; - } + if (!port) + return -ENOMEM; fill_port_info(port, client, group); port->flags = SNDRV_SEQ_PORT_FLG_GIVEN_PORT; @@ -238,24 +235,22 @@ static int seq_ump_group_init(struct seq_ump_client *client, int group_index) pcallbacks.unuse = seq_ump_unuse; pcallbacks.event_input = seq_ump_process_event; port->kernel = &pcallbacks; - err = snd_seq_kernel_client_ctl(client->seq_client, - SNDRV_SEQ_IOCTL_CREATE_PORT, - port); - error: - kfree(port); - return err; + return snd_seq_kernel_client_ctl(client->seq_client, + SNDRV_SEQ_IOCTL_CREATE_PORT, + port); } /* update the sequencer ports; called from notify_fb_change callback */ static void update_port_infos(struct seq_ump_client *client) { - struct snd_seq_port_info *old, *new; + struct snd_seq_port_info *old __free(kfree) = NULL; + struct snd_seq_port_info *new __free(kfree) = NULL; int i, err; old = kzalloc(sizeof(*old), GFP_KERNEL); new = kzalloc(sizeof(*new), GFP_KERNEL); if (!old || !new) - goto error; + return; for (i = 0; i < SNDRV_UMP_MAX_GROUPS; i++) { old->addr.client = client->seq_client; @@ -264,7 +259,7 @@ static void update_port_infos(struct seq_ump_client *client) SNDRV_SEQ_IOCTL_GET_PORT_INFO, old); if (err < 0) - goto error; + return; fill_port_info(new, client, &client->groups[i]); if (old->capability == new->capability && !strcmp(old->name, new->name)) @@ -273,13 +268,10 @@ static void update_port_infos(struct seq_ump_client *client) SNDRV_SEQ_IOCTL_SET_PORT_INFO, new); if (err < 0) - goto error; + return; /* notify to system port */ snd_seq_system_client_ev_port_change(client->seq_client, i); } - error: - kfree(new); - kfree(old); } /* update dir_bits and active flag for all groups in the client */ @@ -334,7 +326,7 @@ static void update_group_attrs(struct seq_ump_client *client) /* create a UMP Endpoint port */ static int create_ump_endpoint_port(struct seq_ump_client *client) { - struct snd_seq_port_info *port; + struct snd_seq_port_info *port __free(kfree) = NULL; struct snd_seq_port_callback pcallbacks; unsigned int rawmidi_info = client->ump->core.info_flags; int err; @@ -383,7 +375,6 @@ static int create_ump_endpoint_port(struct seq_ump_client *client) err = snd_seq_kernel_client_ctl(client->seq_client, SNDRV_SEQ_IOCTL_CREATE_PORT, port); - kfree(port); return err; } -- 2.25.1