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authorTakashi Iwai <tiwai@suse.de>2019-01-10 20:41:49 +0100
committerTakashi Iwai <tiwai@suse.de>2019-01-11 08:35:13 +0100
commit0785c04b68a8a9731c02dcbce7332997db6f7027 (patch)
treedace2543a27a2e61c2db24e186224d0a343edf01
parentba94bebf843cf202ec6d5b7c83d750a2816c659a (diff)
ALSA: seq: Do error checks at creating system ports
(bsc#1121278). suse-commit: 1218fe2357aa28513f93889ddb00c2b70fffe0f3
-rw-r--r--sound/core/seq/seq_system.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/sound/core/seq/seq_system.c b/sound/core/seq/seq_system.c
index 3b89b0adad6a..0dc5d5a45ecc 100644
--- a/sound/core/seq/seq_system.c
+++ b/sound/core/seq/seq_system.c
@@ -123,6 +123,7 @@ int __init snd_seq_system_client_init(void)
{
struct snd_seq_port_callback pcallbacks;
struct snd_seq_port_info *port;
+ int err;
port = kzalloc(sizeof(*port), GFP_KERNEL);
if (!port)
@@ -148,7 +149,10 @@ int __init snd_seq_system_client_init(void)
port->flags = SNDRV_SEQ_PORT_FLG_GIVEN_PORT;
port->addr.client = sysclient;
port->addr.port = SNDRV_SEQ_PORT_SYSTEM_TIMER;
- snd_seq_kernel_client_ctl(sysclient, SNDRV_SEQ_IOCTL_CREATE_PORT, port);
+ err = snd_seq_kernel_client_ctl(sysclient, SNDRV_SEQ_IOCTL_CREATE_PORT,
+ port);
+ if (err < 0)
+ goto error_port;
/* register announcement port */
strcpy(port->name, "Announce");
@@ -158,16 +162,24 @@ int __init snd_seq_system_client_init(void)
port->flags = SNDRV_SEQ_PORT_FLG_GIVEN_PORT;
port->addr.client = sysclient;
port->addr.port = SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE;
- snd_seq_kernel_client_ctl(sysclient, SNDRV_SEQ_IOCTL_CREATE_PORT, port);
+ err = snd_seq_kernel_client_ctl(sysclient, SNDRV_SEQ_IOCTL_CREATE_PORT,
+ port);
+ if (err < 0)
+ goto error_port;
announce_port = port->addr.port;
kfree(port);
return 0;
+
+ error_port:
+ snd_seq_system_client_done();
+ kfree(port);
+ return err;
}
/* unregister our internal client */
-void __exit snd_seq_system_client_done(void)
+void snd_seq_system_client_done(void)
{
int oldsysclient = sysclient;