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Message-ID: <20230601161622.1808135-3-ckeepax@opensource.cirrus.com>
Date: Thu, 1 Jun 2023 17:16:21 +0100
From: Charles Keepax <ckeepax@...nsource.cirrus.com>
To: <vkoul@...nel.org>
CC: <yung-chuan.liao@...ux.intel.com>,
<pierre-louis.bossart@...ux.intel.com>, <sanyog.r.kale@...el.com>,
<alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>,
<patches@...nsource.cirrus.com>
Subject: [PATCH 3/4] soundwire: stream: Remove unnecessary gotos
There is a lot of code using gotos to skip small sections of code, this
is a fairly dubious use of a goto, especially when the level of
intentation is really low. Most of this code doesn't even breach 80
characters when naively shifted over.
Simplify the code a bit, by replacing these unnecessary gotos with
simple ifs.
Signed-off-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
---
drivers/soundwire/stream.c | 131 +++++++++++++++++--------------------
1 file changed, 59 insertions(+), 72 deletions(-)
diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
index 379228f221869..248ab243ec6e4 100644
--- a/drivers/soundwire/stream.c
+++ b/drivers/soundwire/stream.c
@@ -1355,25 +1355,23 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream,
return -EINVAL;
}
- if (!update_params)
- goto program_params;
-
- /* Increment cumulative bus bandwidth */
- /* TODO: Update this during Device-Device support */
- bus->params.bandwidth += m_rt->stream->params.rate *
- m_rt->ch_count * m_rt->stream->params.bps;
-
- /* Compute params */
- if (bus->compute_params) {
- ret = bus->compute_params(bus);
- if (ret < 0) {
- dev_err(bus->dev, "Compute params failed: %d\n",
- ret);
- goto restore_params;
+ if (update_params) {
+ /* Increment cumulative bus bandwidth */
+ /* TODO: Update this during Device-Device support */
+ bus->params.bandwidth += m_rt->stream->params.rate *
+ m_rt->ch_count * m_rt->stream->params.bps;
+
+ /* Compute params */
+ if (bus->compute_params) {
+ ret = bus->compute_params(bus);
+ if (ret < 0) {
+ dev_err(bus->dev, "Compute params failed: %d\n",
+ ret);
+ goto restore_params;
+ }
}
}
-program_params:
/* Program params */
ret = sdw_program_params(bus, true);
if (ret < 0) {
@@ -1864,7 +1862,7 @@ int sdw_stream_add_master(struct sdw_bus *bus,
struct sdw_stream_runtime *stream)
{
struct sdw_master_runtime *m_rt;
- bool alloc_master_rt = true;
+ bool alloc_master_rt = false;
int ret;
mutex_lock(&bus->bus_lock);
@@ -1886,30 +1884,25 @@ int sdw_stream_add_master(struct sdw_bus *bus,
* it first), if so skip allocation and go to configuration
*/
m_rt = sdw_master_rt_find(bus, stream);
- if (m_rt) {
- alloc_master_rt = false;
- goto skip_alloc_master_rt;
- }
-
- m_rt = sdw_master_rt_alloc(bus, stream);
if (!m_rt) {
- dev_err(bus->dev, "%s: Master runtime alloc failed for stream:%s\n",
- __func__, stream->name);
- ret = -ENOMEM;
- goto unlock;
- }
-skip_alloc_master_rt:
-
- if (sdw_master_port_allocated(m_rt))
- goto skip_alloc_master_port;
+ m_rt = sdw_master_rt_alloc(bus, stream);
+ if (!m_rt) {
+ dev_err(bus->dev, "%s: Master runtime alloc failed for stream:%s\n",
+ __func__, stream->name);
+ ret = -ENOMEM;
+ goto unlock;
+ }
- ret = sdw_master_port_alloc(m_rt, num_ports);
- if (ret)
- goto alloc_error;
+ alloc_master_rt = true;
+ }
- stream->m_rt_count++;
+ if (!sdw_master_port_allocated(m_rt)) {
+ ret = sdw_master_port_alloc(m_rt, num_ports);
+ if (ret)
+ goto alloc_error;
-skip_alloc_master_port:
+ stream->m_rt_count++;
+ }
ret = sdw_master_rt_config(m_rt, stream_config);
if (ret < 0)
@@ -1990,8 +1983,8 @@ int sdw_stream_add_slave(struct sdw_slave *slave,
{
struct sdw_slave_runtime *s_rt;
struct sdw_master_runtime *m_rt;
- bool alloc_master_rt = true;
- bool alloc_slave_rt = true;
+ bool alloc_master_rt = false;
+ bool alloc_slave_rt = false;
int ret;
@@ -2002,47 +1995,41 @@ int sdw_stream_add_slave(struct sdw_slave *slave,
* and go to configuration
*/
m_rt = sdw_master_rt_find(slave->bus, stream);
- if (m_rt) {
- alloc_master_rt = false;
- goto skip_alloc_master_rt;
- }
-
- /*
- * If this API is invoked by Slave first then m_rt is not valid.
- * So, allocate m_rt and add Slave to it.
- */
- m_rt = sdw_master_rt_alloc(slave->bus, stream);
if (!m_rt) {
- dev_err(&slave->dev, "%s: Master runtime alloc failed for stream:%s\n",
- __func__, stream->name);
- ret = -ENOMEM;
- goto unlock;
- }
+ /*
+ * If this API is invoked by Slave first then m_rt is not valid.
+ * So, allocate m_rt and add Slave to it.
+ */
+ m_rt = sdw_master_rt_alloc(slave->bus, stream);
+ if (!m_rt) {
+ dev_err(&slave->dev, "%s: Master runtime alloc failed for stream:%s\n",
+ __func__, stream->name);
+ ret = -ENOMEM;
+ goto unlock;
+ }
-skip_alloc_master_rt:
- s_rt = sdw_slave_rt_find(slave, stream);
- if (s_rt) {
- alloc_slave_rt = false;
- goto skip_alloc_slave_rt;
+ alloc_master_rt = true;
}
- s_rt = sdw_slave_rt_alloc(slave, m_rt);
+ s_rt = sdw_slave_rt_find(slave, stream);
if (!s_rt) {
- dev_err(&slave->dev, "Slave runtime alloc failed for stream:%s\n", stream->name);
- alloc_slave_rt = false;
- ret = -ENOMEM;
- goto alloc_error;
- }
+ s_rt = sdw_slave_rt_alloc(slave, m_rt);
+ if (!s_rt) {
+ dev_err(&slave->dev, "Slave runtime alloc failed for stream:%s\n",
+ stream->name);
+ ret = -ENOMEM;
+ goto alloc_error;
+ }
-skip_alloc_slave_rt:
- if (sdw_slave_port_allocated(s_rt))
- goto skip_port_alloc;
+ alloc_slave_rt = true;
+ }
- ret = sdw_slave_port_alloc(slave, s_rt, num_ports);
- if (ret)
- goto alloc_error;
+ if (!sdw_slave_port_allocated(s_rt)) {
+ ret = sdw_slave_port_alloc(slave, s_rt, num_ports);
+ if (ret)
+ goto alloc_error;
+ }
-skip_port_alloc:
ret = sdw_master_rt_config(m_rt, stream_config);
if (ret)
goto unlock;
--
2.30.2
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