[alsa-devel] [PATCH] ALSA: Fireface: Use common error handling code in pcm_open()
From: Markus Elfring elfring@users.sourceforge.net Date: Tue, 22 Aug 2017 21:45:42 +0200
Add a jump target so that a bit of exception handling can be better reused at the end of this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring elfring@users.sourceforge.net --- sound/firewire/fireface/ff-pcm.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c index d12a0e3a4219..40975395a64a 100644 --- a/sound/firewire/fireface/ff-pcm.c +++ b/sound/firewire/fireface/ff-pcm.c @@ -138,16 +138,12 @@ static int pcm_open(struct snd_pcm_substream *substream) return err;
err = pcm_init_hw_params(ff, substream); - if (err < 0) { - snd_ff_stream_lock_release(ff); - return err; - } + if (err < 0) + goto release_lock;
err = ff->spec->protocol->get_clock(ff, &rate, &src); - if (err < 0) { - snd_ff_stream_lock_release(ff); - return err; - } + if (err < 0) + goto release_lock;
if (src != SND_FF_CLOCK_SRC_INTERNAL) { for (i = 0; i < CIP_SFC_COUNT; ++i) { @@ -177,6 +173,10 @@ static int pcm_open(struct snd_pcm_substream *substream) snd_pcm_set_sync(substream);
return 0; + +release_lock: + snd_ff_stream_lock_release(ff); + return err; }
static int pcm_close(struct snd_pcm_substream *substream)
Hi,
On Aug 23 2017 04:51, SF Markus Elfring wrote:
From: Markus Elfring elfring@users.sourceforge.net Date: Tue, 22 Aug 2017 21:45:42 +0200
Add a jump target so that a bit of exception handling can be better reused at the end of this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring elfring@users.sourceforge.net
sound/firewire/fireface/ff-pcm.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c index d12a0e3a4219..40975395a64a 100644 --- a/sound/firewire/fireface/ff-pcm.c +++ b/sound/firewire/fireface/ff-pcm.c @@ -138,16 +138,12 @@ static int pcm_open(struct snd_pcm_substream *substream) return err;
err = pcm_init_hw_params(ff, substream);
- if (err < 0) {
snd_ff_stream_lock_release(ff);
return err;
- }
if (err < 0)
goto release_lock;
err = ff->spec->protocol->get_clock(ff, &rate, &src);
- if (err < 0) {
snd_ff_stream_lock_release(ff);
return err;
- }
if (err < 0)
goto release_lock;
if (src != SND_FF_CLOCK_SRC_INTERNAL) { for (i = 0; i < CIP_SFC_COUNT; ++i) {
@@ -177,6 +173,10 @@ static int pcm_open(struct snd_pcm_substream *substream) snd_pcm_set_sync(substream);
return 0;
+release_lock:
snd_ff_stream_lock_release(ff);
return err; }
static int pcm_close(struct snd_pcm_substream *substream)
A line to return for err is still left after applying this patch.
148 if (src != SND_FF_CLOCK_SRC_INTERNAL) { 149 for (i = 0; i < CIP_SFC_COUNT; ++i) { 150 if (amdtp_rate_table[i] == rate) 151 break; 152 } 153 /* 154 * The unit is configured at sampling frequency which packet 155 * streaming engine can't support. 156 */ 157 if (i >= CIP_SFC_COUNT) { 158 snd_ff_stream_lock_release(ff); 159 return -EIO; 160 } 161
Regards
Takashi Sakamoto
From: Markus Elfring elfring@users.sourceforge.net Date: Wed, 23 Aug 2017 14:45:20 +0200
Add a jump target so that a bit of exception handling can be better reused at the end of this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring elfring@users.sourceforge.net ---
v2: It seems that a source code adjustment was requested by Takashi Sakamoto for another if branch.
sound/firewire/fireface/ff-pcm.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c index d12a0e3a4219..e3c16308363d 100644 --- a/sound/firewire/fireface/ff-pcm.c +++ b/sound/firewire/fireface/ff-pcm.c @@ -138,16 +138,12 @@ static int pcm_open(struct snd_pcm_substream *substream) return err;
err = pcm_init_hw_params(ff, substream); - if (err < 0) { - snd_ff_stream_lock_release(ff); - return err; - } + if (err < 0) + goto release_lock;
err = ff->spec->protocol->get_clock(ff, &rate, &src); - if (err < 0) { - snd_ff_stream_lock_release(ff); - return err; - } + if (err < 0) + goto release_lock;
if (src != SND_FF_CLOCK_SRC_INTERNAL) { for (i = 0; i < CIP_SFC_COUNT; ++i) { @@ -159,8 +155,8 @@ static int pcm_open(struct snd_pcm_substream *substream) * streaming engine can't support. */ if (i >= CIP_SFC_COUNT) { - snd_ff_stream_lock_release(ff); - return -EIO; + err = -EIO; + goto release_lock; }
substream->runtime->hw.rate_min = rate; @@ -177,6 +173,10 @@ static int pcm_open(struct snd_pcm_substream *substream) snd_pcm_set_sync(substream);
return 0; + +release_lock: + snd_ff_stream_lock_release(ff); + return err; }
static int pcm_close(struct snd_pcm_substream *substream)
On Aug 23 2017 21:54, SF Markus Elfring wrote:
From: Markus Elfring elfring@users.sourceforge.net Date: Wed, 23 Aug 2017 14:45:20 +0200
Add a jump target so that a bit of exception handling can be better reused at the end of this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring elfring@users.sourceforge.net
v2: It seems that a source code adjustment was requested by Takashi Sakamoto for another if branch.
sound/firewire/fireface/ff-pcm.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-)
Reviewed-by: Takashi Sakamoto o-takashi@sakamocchi.jp
diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c index d12a0e3a4219..e3c16308363d 100644 --- a/sound/firewire/fireface/ff-pcm.c +++ b/sound/firewire/fireface/ff-pcm.c @@ -138,16 +138,12 @@ static int pcm_open(struct snd_pcm_substream *substream) return err;
err = pcm_init_hw_params(ff, substream);
- if (err < 0) {
snd_ff_stream_lock_release(ff);
return err;
- }
if (err < 0)
goto release_lock;
err = ff->spec->protocol->get_clock(ff, &rate, &src);
- if (err < 0) {
snd_ff_stream_lock_release(ff);
return err;
- }
if (err < 0)
goto release_lock;
if (src != SND_FF_CLOCK_SRC_INTERNAL) { for (i = 0; i < CIP_SFC_COUNT; ++i) {
@@ -159,8 +155,8 @@ static int pcm_open(struct snd_pcm_substream *substream) * streaming engine can't support. */ if (i >= CIP_SFC_COUNT) {
snd_ff_stream_lock_release(ff);
return -EIO;
err = -EIO;
goto release_lock;
}
substream->runtime->hw.rate_min = rate;
@@ -177,6 +173,10 @@ static int pcm_open(struct snd_pcm_substream *substream) snd_pcm_set_sync(substream);
return 0;
+release_lock:
snd_ff_stream_lock_release(ff);
return err; }
static int pcm_close(struct snd_pcm_substream *substream)
Thanks
Takashi Sakamoto
On Wed, 23 Aug 2017 14:54:32 +0200, SF Markus Elfring wrote:
From: Markus Elfring elfring@users.sourceforge.net Date: Wed, 23 Aug 2017 14:45:20 +0200
Add a jump target so that a bit of exception handling can be better reused at the end of this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring elfring@users.sourceforge.net
v2: It seems that a source code adjustment was requested by Takashi Sakamoto for another if branch.
Applied, thanks.
Takashi
participants (3)
-
SF Markus Elfring
-
Takashi Iwai
-
Takashi Sakamoto