Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Charles Keepax <ckeepax@opensource.cirrus.com>
To:     <vkoul@kernel.org>
CC:     <yung-chuan.liao@linux.intel.com>,
        <pierre-louis.bossart@linux.intel.com>, <sanyog.r.kale@intel.com>,
        <alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>,
        <patches@opensource.cirrus.com>
Subject: [PATCH v2 4/5] soundwire: stream: Invert logic on runtime alloc flags
Date:   Fri, 2 Jun 2023 11:11:39 +0100
Message-ID: <20230602101140.2040141-4-ckeepax@opensource.cirrus.com>
In-Reply-To: <20230602101140.2040141-1-ckeepax@opensource.cirrus.com>
References: <20230602101140.2040141-1-ckeepax@opensource.cirrus.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
Precedence: bulk

sdw_stream_add_slave/master have flags to indicate if the master or
slave runtime where allocated in that call to the function. Currently
these flags are cleared on all the paths where the runtime is not
allocated, it is more logic and simpler to set the flag on the one path
where the runtime is allocated.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---

Changes since v1:
 - Split out of the goto patch to ease review

Also worth noting I guess this patch could be squashed with patch 1 in
the series really, but I opted to leave them separate as patch 1 is a
much simpler fix to be cherry-picked back to older kernels if someone
needs the fixup, rather than mixing the fixup and tidy up.

Thanks,
Charles

 drivers/soundwire/stream.c | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
index 6595f47b403b5..df5600a80c174 100644
--- a/drivers/soundwire/stream.c
+++ b/drivers/soundwire/stream.c
@@ -1854,7 +1854,7 @@ 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);
@@ -1876,10 +1876,8 @@ 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;
+	if (m_rt)
 		goto skip_alloc_master_rt;
-	}
 
 	m_rt = sdw_master_rt_alloc(bus, stream);
 	if (!m_rt) {
@@ -1888,6 +1886,8 @@ int sdw_stream_add_master(struct sdw_bus *bus,
 		ret = -ENOMEM;
 		goto unlock;
 	}
+
+	alloc_master_rt = true;
 skip_alloc_master_rt:
 
 	if (sdw_master_port_allocated(m_rt))
@@ -1980,8 +1980,8 @@ 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;
 
@@ -1992,10 +1992,8 @@ 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;
+	if (m_rt)
 		goto skip_alloc_master_rt;
-	}
 
 	/*
 	 * If this API is invoked by Slave first then m_rt is not valid.
@@ -2009,21 +2007,22 @@ int sdw_stream_add_slave(struct sdw_slave *slave,
 		goto unlock;
 	}
 
+	alloc_master_rt = true;
+
 skip_alloc_master_rt:
 	s_rt = sdw_slave_rt_find(slave, stream);
-	if (s_rt) {
-		alloc_slave_rt = false;
+	if (s_rt)
 		goto skip_alloc_slave_rt;
-	}
 
 	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);
-		alloc_slave_rt = false;
 		ret = -ENOMEM;
 		goto alloc_error;
 	}
 
+	alloc_slave_rt = true;
+
 skip_alloc_slave_rt:
 	if (sdw_slave_port_allocated(s_rt))
 		goto skip_port_alloc;
-- 
2.30.2