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Message-Id: <20201202204645.23891-8-yung-chuan.liao@linux.intel.com>
Date: Thu, 3 Dec 2020 04:46:45 +0800
From: Bard Liao <yung-chuan.liao@...ux.intel.com>
To: alsa-devel@...a-project.org, vkoul@...nel.org
Cc: vinod.koul@...aro.org, linux-kernel@...r.kernel.org, tiwai@...e.de,
broonie@...nel.org, gregkh@...uxfoundation.org, jank@...ence.com,
srinivas.kandagatla@...aro.org, rander.wang@...ux.intel.com,
ranjani.sridharan@...ux.intel.com, hui.wang@...onical.com,
pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
bard.liao@...el.com
Subject: [PATCH 7/7] soundwire: bus: clarify dev_err/dbg device references
From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
The SoundWire bus code confuses bus and Slave device levels for
dev_err/dbg logs. That's not impacting functionality but the accuracy
of kernel logs.
We should only use bus->dev for bus-level operations and handling of
Device0. For all other logs where the device number is not zero, we
should use &slave->dev to provide more precisions to the
user/integrator.
Reported-by: Rander Wang <rander.wang@...ux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Reviewed-by: Rander Wang <rander.wang@...ux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
drivers/soundwire/bus.c | 63 +++++++++++++++++++++--------------------
1 file changed, 33 insertions(+), 30 deletions(-)
diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index c317f41eba4e..7d07cacef740 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -637,6 +637,7 @@ static int sdw_get_device_num(struct sdw_slave *slave)
static int sdw_assign_device_num(struct sdw_slave *slave)
{
+ struct sdw_bus *bus = slave->bus;
int ret, dev_num;
bool new_device = false;
@@ -647,7 +648,7 @@ static int sdw_assign_device_num(struct sdw_slave *slave)
dev_num = sdw_get_device_num(slave);
mutex_unlock(&slave->bus->bus_lock);
if (dev_num < 0) {
- dev_err(slave->bus->dev, "Get dev_num failed: %d\n",
+ dev_err(bus->dev, "Get dev_num failed: %d\n",
dev_num);
return dev_num;
}
@@ -660,7 +661,7 @@ static int sdw_assign_device_num(struct sdw_slave *slave)
}
if (!new_device)
- dev_dbg(slave->bus->dev,
+ dev_dbg(bus->dev,
"Slave already registered, reusing dev_num:%d\n",
slave->dev_num);
@@ -670,7 +671,7 @@ static int sdw_assign_device_num(struct sdw_slave *slave)
ret = sdw_write_no_pm(slave, SDW_SCP_DEVNUMBER, dev_num);
if (ret < 0) {
- dev_err(&slave->dev, "Program device_num %d failed: %d\n",
+ dev_err(bus->dev, "Program device_num %d failed: %d\n",
dev_num, ret);
return ret;
}
@@ -749,7 +750,7 @@ static int sdw_program_device_num(struct sdw_bus *bus)
*/
ret = sdw_assign_device_num(slave);
if (ret) {
- dev_err(slave->bus->dev,
+ dev_err(bus->dev,
"Assign dev_num failed:%d\n",
ret);
return ret;
@@ -789,9 +790,11 @@ static int sdw_program_device_num(struct sdw_bus *bus)
static void sdw_modify_slave_status(struct sdw_slave *slave,
enum sdw_slave_status status)
{
- mutex_lock(&slave->bus->bus_lock);
+ struct sdw_bus *bus = slave->bus;
- dev_vdbg(&slave->dev,
+ mutex_lock(&bus->bus_lock);
+
+ dev_vdbg(bus->dev,
"%s: changing status slave %d status %d new status %d\n",
__func__, slave->dev_num, slave->status, status);
@@ -812,7 +815,7 @@ static void sdw_modify_slave_status(struct sdw_slave *slave,
complete(&slave->enumeration_complete);
}
slave->status = status;
- mutex_unlock(&slave->bus->bus_lock);
+ mutex_unlock(&bus->bus_lock);
}
static enum sdw_clk_stop_mode sdw_get_clk_stop_mode(struct sdw_slave *slave)
@@ -1141,7 +1144,7 @@ int sdw_configure_dpn_intr(struct sdw_slave *slave,
ret = sdw_update(slave, addr, (mask | SDW_DPN_INT_PORT_READY), val);
if (ret < 0)
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_DPN_INTMASK write failed:%d\n", val);
return ret;
@@ -1272,7 +1275,7 @@ static int sdw_initialize_slave(struct sdw_slave *slave)
/* Enable SCP interrupts */
ret = sdw_update_no_pm(slave, SDW_SCP_INTMASK1, val, val);
if (ret < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_SCP_INTMASK1 write failed:%d\n", ret);
return ret;
}
@@ -1287,7 +1290,7 @@ static int sdw_initialize_slave(struct sdw_slave *slave)
ret = sdw_update_no_pm(slave, SDW_DP0_INTMASK, val, val);
if (ret < 0)
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_DP0_INTMASK read failed:%d\n", ret);
return ret;
}
@@ -1299,7 +1302,7 @@ static int sdw_handle_dp0_interrupt(struct sdw_slave *slave, u8 *slave_status)
status = sdw_read_no_pm(slave, SDW_DP0_INT);
if (status < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_DP0_INT read failed:%d\n", status);
return status;
}
@@ -1338,7 +1341,7 @@ static int sdw_handle_dp0_interrupt(struct sdw_slave *slave, u8 *slave_status)
/* clear the interrupts but don't touch reserved and SDCA_CASCADE fields */
ret = sdw_write_no_pm(slave, SDW_DP0_INT, clear);
if (ret < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_DP0_INT write failed:%d\n", ret);
return ret;
}
@@ -1346,7 +1349,7 @@ static int sdw_handle_dp0_interrupt(struct sdw_slave *slave, u8 *slave_status)
/* Read DP0 interrupt again */
status2 = sdw_read_no_pm(slave, SDW_DP0_INT);
if (status2 < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_DP0_INT read failed:%d\n", status2);
return status2;
}
@@ -1359,7 +1362,7 @@ static int sdw_handle_dp0_interrupt(struct sdw_slave *slave, u8 *slave_status)
} while ((status & SDW_DP0_INTERRUPTS) && (count < SDW_READ_INTR_CLEAR_RETRY));
if (count == SDW_READ_INTR_CLEAR_RETRY)
- dev_warn(slave->bus->dev, "Reached MAX_RETRY on DP0 read\n");
+ dev_warn(&slave->dev, "Reached MAX_RETRY on DP0 read\n");
return ret;
}
@@ -1377,7 +1380,7 @@ static int sdw_handle_port_interrupt(struct sdw_slave *slave,
addr = SDW_DPN_INT(port);
status = sdw_read_no_pm(slave, addr);
if (status < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_DPN_INT read failed:%d\n", status);
return status;
@@ -1411,7 +1414,7 @@ static int sdw_handle_port_interrupt(struct sdw_slave *slave,
/* clear the interrupt but don't touch reserved fields */
ret = sdw_write_no_pm(slave, addr, clear);
if (ret < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_DPN_INT write failed:%d\n", ret);
return ret;
}
@@ -1419,7 +1422,7 @@ static int sdw_handle_port_interrupt(struct sdw_slave *slave,
/* Read DPN interrupt again */
status2 = sdw_read_no_pm(slave, addr);
if (status2 < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_DPN_INT read failed:%d\n", status2);
return status2;
}
@@ -1432,7 +1435,7 @@ static int sdw_handle_port_interrupt(struct sdw_slave *slave,
} while ((status & SDW_DPN_INTERRUPTS) && (count < SDW_READ_INTR_CLEAR_RETRY));
if (count == SDW_READ_INTR_CLEAR_RETRY)
- dev_warn(slave->bus->dev, "Reached MAX_RETRY on port read");
+ dev_warn(&slave->dev, "Reached MAX_RETRY on port read");
return ret;
}
@@ -1461,7 +1464,7 @@ static int sdw_handle_slave_alerts(struct sdw_slave *slave)
/* Read Intstat 1, Intstat 2 and Intstat 3 registers */
ret = sdw_read_no_pm(slave, SDW_SCP_INT1);
if (ret < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_SCP_INT1 read failed:%d\n", ret);
goto io_err;
}
@@ -1469,7 +1472,7 @@ static int sdw_handle_slave_alerts(struct sdw_slave *slave)
ret = sdw_nread_no_pm(slave, SDW_SCP_INTSTAT2, 2, buf2);
if (ret < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_SCP_INT2/3 read failed:%d\n", ret);
goto io_err;
}
@@ -1477,7 +1480,7 @@ static int sdw_handle_slave_alerts(struct sdw_slave *slave)
if (slave->prop.is_sdca) {
ret = sdw_read_no_pm(slave, SDW_DP0_INT);
if (ret < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_DP0_INT read failed:%d\n", ret);
goto io_err;
}
@@ -1574,7 +1577,7 @@ static int sdw_handle_slave_alerts(struct sdw_slave *slave)
/* Ack interrupt */
ret = sdw_write_no_pm(slave, SDW_SCP_INT1, clear);
if (ret < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_SCP_INT1 write failed:%d\n", ret);
goto io_err;
}
@@ -1588,7 +1591,7 @@ static int sdw_handle_slave_alerts(struct sdw_slave *slave)
*/
ret = sdw_read_no_pm(slave, SDW_SCP_INT1);
if (ret < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_SCP_INT1 read failed:%d\n", ret);
goto io_err;
}
@@ -1596,7 +1599,7 @@ static int sdw_handle_slave_alerts(struct sdw_slave *slave)
ret = sdw_nread_no_pm(slave, SDW_SCP_INTSTAT2, 2, _buf2);
if (ret < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_SCP_INT2/3 read failed:%d\n", ret);
goto io_err;
}
@@ -1604,7 +1607,7 @@ static int sdw_handle_slave_alerts(struct sdw_slave *slave)
if (slave->prop.is_sdca) {
ret = sdw_read_no_pm(slave, SDW_DP0_INT);
if (ret < 0) {
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"SDW_DP0_INT read failed:%d\n", ret);
goto io_err;
}
@@ -1630,7 +1633,7 @@ static int sdw_handle_slave_alerts(struct sdw_slave *slave)
} while (stat != 0 && count < SDW_READ_INTR_CLEAR_RETRY);
if (count == SDW_READ_INTR_CLEAR_RETRY)
- dev_warn(slave->bus->dev, "Reached MAX_RETRY on alert read\n");
+ dev_warn(&slave->dev, "Reached MAX_RETRY on alert read\n");
io_err:
pm_runtime_mark_last_busy(&slave->dev);
@@ -1736,7 +1739,7 @@ int sdw_handle_slave_status(struct sdw_bus *bus,
case SDW_SLAVE_ALERT:
ret = sdw_handle_slave_alerts(slave);
if (ret)
- dev_err(bus->dev,
+ dev_err(&slave->dev,
"Slave %d alert handling failed: %d\n",
i, ret);
break;
@@ -1755,21 +1758,21 @@ int sdw_handle_slave_status(struct sdw_bus *bus,
ret = sdw_initialize_slave(slave);
if (ret)
- dev_err(bus->dev,
+ dev_err(&slave->dev,
"Slave %d initialization failed: %d\n",
i, ret);
break;
default:
- dev_err(bus->dev, "Invalid slave %d status:%d\n",
+ dev_err(&slave->dev, "Invalid slave %d status:%d\n",
i, status[i]);
break;
}
ret = sdw_update_slave_status(slave, status[i]);
if (ret)
- dev_err(slave->bus->dev,
+ dev_err(&slave->dev,
"Update Slave status failed:%d\n", ret);
if (attached_initializing)
complete(&slave->initialization_complete);
--
2.17.1
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