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soundwire: fix usages of device_get_named_child_node()

Browse Source 
The documentation for device_get_named_child_node() mentions this
important point:

"
The caller is responsible for calling fwnode_handle_put() on the
returned fwnode pointer.
"

Add fwnode_handle_put() to avoid leaked references.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20240429004935.2400191-1-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2024-04-29 00:49:35 +00:00 committed by Vinod Koul
parent 1613e604df
commit e2d8ea0a06
3 changed files with 32 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/soundwire/amd_manager.c
View File

@ -571,6 +571,9 @@ static int sdw_master_read_amd_prop(struct sdw_bus *bus)
amd_manager->wake_en_mask = wake_en_mask;
fwnode_property_read_u32(link, "amd-sdw-power-mode", &power_mode_mask);
amd_manager->power_mode_mask = power_mode_mask;
fwnode_handle_put(link);
return 0;
}

6
drivers/soundwire/intel_auxdevice.c
View File

@ -155,8 +155,10 @@ static int sdw_master_read_intel_prop(struct sdw_bus *bus)
SDW_MASTER_QUIRKS_CLEAR_INITIAL_PARITY;
intel_prop = devm_kzalloc(bus->dev, sizeof(*intel_prop), GFP_KERNEL);
if (!intel_prop)
if (!intel_prop) {
fwnode_handle_put(link);
return -ENOMEM;
}
/* initialize with hardware defaults, in case the properties are not found */
intel_prop->doaise = 0x1;
@ -184,6 +186,8 @@ static int sdw_master_read_intel_prop(struct sdw_bus *bus)
intel_prop->dodse,
intel_prop->dods);
fwnode_handle_put(link);
return 0;
}

30
drivers/soundwire/mipi_disco.c
View File

@ -66,8 +66,10 @@ int sdw_master_read_prop(struct sdw_bus *bus)
prop->clk_freq = devm_kcalloc(bus->dev, prop->num_clk_freq,
sizeof(*prop->clk_freq),
GFP_KERNEL);
if (!prop->clk_freq)
if (!prop->clk_freq) {
fwnode_handle_put(link);
return -ENOMEM;
}
fwnode_property_read_u32_array(link,
"mipi-sdw-clock-frequencies-supported",
@ -92,8 +94,10 @@ int sdw_master_read_prop(struct sdw_bus *bus)
prop->clk_gears = devm_kcalloc(bus->dev, prop->num_clk_gears,
sizeof(*prop->clk_gears),
GFP_KERNEL);
if (!prop->clk_gears)
if (!prop->clk_gears) {
fwnode_handle_put(link);
return -ENOMEM;
}
fwnode_property_read_u32_array(link,
"mipi-sdw-supported-clock-gears",
@ -116,6 +120,8 @@ int sdw_master_read_prop(struct sdw_bus *bus)
fwnode_property_read_u32(link, "mipi-sdw-command-error-threshold",
&prop->err_threshold);
fwnode_handle_put(link);
return 0;
}
EXPORT_SYMBOL(sdw_master_read_prop);
@ -197,8 +203,10 @@ static int sdw_slave_read_dpn(struct sdw_slave *slave,
dpn[i].num_words,
sizeof(*dpn[i].words),
GFP_KERNEL);
if (!dpn[i].words)
if (!dpn[i].words) {
fwnode_handle_put(node);
return -ENOMEM;
}
fwnode_property_read_u32_array(node,
"mipi-sdw-port-wordlength-configs",
@ -236,8 +244,10 @@ static int sdw_slave_read_dpn(struct sdw_slave *slave,
dpn[i].num_channels,
sizeof(*dpn[i].channels),
GFP_KERNEL);
if (!dpn[i].channels)
if (!dpn[i].channels) {
fwnode_handle_put(node);
return -ENOMEM;
}
fwnode_property_read_u32_array(node,
"mipi-sdw-channel-number-list",
@ -251,8 +261,10 @@ static int sdw_slave_read_dpn(struct sdw_slave *slave,
dpn[i].num_ch_combinations,
sizeof(*dpn[i].ch_combinations),
GFP_KERNEL);
if (!dpn[i].ch_combinations)
if (!dpn[i].ch_combinations) {
fwnode_handle_put(node);
return -ENOMEM;
}
fwnode_property_read_u32_array(node,
"mipi-sdw-channel-combination-list",
@ -274,6 +286,8 @@ static int sdw_slave_read_dpn(struct sdw_slave *slave,
/* TODO: Read audio mode */
fwnode_handle_put(node);
i++;
}
@ -348,10 +362,14 @@ int sdw_slave_read_prop(struct sdw_slave *slave)
prop->dp0_prop = devm_kzalloc(&slave->dev,
sizeof(*prop->dp0_prop),
GFP_KERNEL);
if (!prop->dp0_prop)
if (!prop->dp0_prop) {
fwnode_handle_put(port);
return -ENOMEM;
}
sdw_slave_read_dp0(slave, port, prop->dp0_prop);
fwnode_handle_put(port);
}
/*