firmware_class: Reorganize fw_create_instance()
Recent patches to split up the three phases of request_firmware() lead to a casting away of const in fw_create_instance(). We can avoid this cast by splitting up fw_create_instance() a bit. Make _request_firmware_setup() return a struct fw_priv and use that struct instead of passing struct firmware to _request_firmware(). Move the uevent and device file creation bits to the loading phase and rename the function to _request_firmware_load() to better reflect its purpose. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
parent
247bc03742
commit
dddb5549da
|
@ -440,21 +440,19 @@ static void firmware_class_timeout(u_long data)
|
|||
}
|
||||
|
||||
static struct firmware_priv *
|
||||
fw_create_instance(const struct firmware *firmware, const char *fw_name,
|
||||
fw_create_instance(struct firmware *firmware, const char *fw_name,
|
||||
struct device *device, bool uevent, bool nowait)
|
||||
{
|
||||
struct firmware_priv *fw_priv;
|
||||
struct device *f_dev;
|
||||
int error;
|
||||
|
||||
fw_priv = kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL);
|
||||
if (!fw_priv) {
|
||||
dev_err(device, "%s: kmalloc failed\n", __func__);
|
||||
error = -ENOMEM;
|
||||
goto err_out;
|
||||
return ERR_PTR(-ENOMEM);
|
||||
}
|
||||
|
||||
fw_priv->fw = (struct firmware *)firmware;
|
||||
fw_priv->fw = firmware;
|
||||
fw_priv->nowait = nowait;
|
||||
strcpy(fw_priv->fw_id, fw_name);
|
||||
init_completion(&fw_priv->completion);
|
||||
|
@ -468,74 +466,37 @@ fw_create_instance(const struct firmware *firmware, const char *fw_name,
|
|||
f_dev->parent = device;
|
||||
f_dev->class = &firmware_class;
|
||||
|
||||
dev_set_uevent_suppress(f_dev, true);
|
||||
|
||||
/* Need to pin this module until class device is destroyed */
|
||||
__module_get(THIS_MODULE);
|
||||
|
||||
error = device_add(f_dev);
|
||||
if (error) {
|
||||
dev_err(device, "%s: device_register failed\n", __func__);
|
||||
goto err_put_dev;
|
||||
}
|
||||
|
||||
error = device_create_bin_file(f_dev, &firmware_attr_data);
|
||||
if (error) {
|
||||
dev_err(device, "%s: sysfs_create_bin_file failed\n", __func__);
|
||||
goto err_del_dev;
|
||||
}
|
||||
|
||||
error = device_create_file(f_dev, &dev_attr_loading);
|
||||
if (error) {
|
||||
dev_err(device, "%s: device_create_file failed\n", __func__);
|
||||
goto err_del_bin_attr;
|
||||
}
|
||||
|
||||
if (uevent)
|
||||
dev_set_uevent_suppress(f_dev, false);
|
||||
|
||||
return fw_priv;
|
||||
|
||||
err_del_bin_attr:
|
||||
device_remove_bin_file(f_dev, &firmware_attr_data);
|
||||
err_del_dev:
|
||||
device_del(f_dev);
|
||||
err_put_dev:
|
||||
put_device(f_dev);
|
||||
err_out:
|
||||
return ERR_PTR(error);
|
||||
}
|
||||
|
||||
static void fw_destroy_instance(struct firmware_priv *fw_priv)
|
||||
{
|
||||
struct device *f_dev = &fw_priv->dev;
|
||||
|
||||
device_remove_file(f_dev, &dev_attr_loading);
|
||||
device_remove_bin_file(f_dev, &firmware_attr_data);
|
||||
device_unregister(f_dev);
|
||||
}
|
||||
|
||||
static int _request_firmware_prepare(const struct firmware **firmware_p,
|
||||
const char *name, struct device *device)
|
||||
static struct firmware_priv *
|
||||
_request_firmware_prepare(const struct firmware **firmware_p, const char *name,
|
||||
struct device *device, bool uevent, bool nowait)
|
||||
{
|
||||
struct firmware *firmware;
|
||||
struct firmware_priv *fw_priv;
|
||||
|
||||
if (!firmware_p)
|
||||
return -EINVAL;
|
||||
return ERR_PTR(-EINVAL);
|
||||
|
||||
*firmware_p = firmware = kzalloc(sizeof(*firmware), GFP_KERNEL);
|
||||
if (!firmware) {
|
||||
dev_err(device, "%s: kmalloc(struct firmware) failed\n",
|
||||
__func__);
|
||||
return -ENOMEM;
|
||||
return ERR_PTR(-ENOMEM);
|
||||
}
|
||||
|
||||
if (fw_get_builtin_firmware(firmware, name)) {
|
||||
dev_dbg(device, "firmware: using built-in firmware %s\n", name);
|
||||
return 0;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return 1;
|
||||
fw_priv = fw_create_instance(firmware, name, device, uevent, nowait);
|
||||
if (IS_ERR(fw_priv)) {
|
||||
release_firmware(firmware);
|
||||
*firmware_p = NULL;
|
||||
}
|
||||
return fw_priv;
|
||||
}
|
||||
|
||||
static void _request_firmware_cleanup(const struct firmware **firmware_p)
|
||||
|
@ -544,21 +505,38 @@ static void _request_firmware_cleanup(const struct firmware **firmware_p)
|
|||
*firmware_p = NULL;
|
||||
}
|
||||
|
||||
static int _request_firmware(const struct firmware *firmware,
|
||||
const char *name, struct device *device,
|
||||
bool uevent, bool nowait, long timeout)
|
||||
static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
|
||||
long timeout)
|
||||
{
|
||||
struct firmware_priv *fw_priv;
|
||||
int retval = 0;
|
||||
struct device *f_dev = &fw_priv->dev;
|
||||
|
||||
if (uevent)
|
||||
dev_dbg(device, "firmware: requesting %s\n", name);
|
||||
dev_set_uevent_suppress(f_dev, true);
|
||||
|
||||
fw_priv = fw_create_instance(firmware, name, device, uevent, nowait);
|
||||
if (IS_ERR(fw_priv))
|
||||
return PTR_ERR(fw_priv);
|
||||
/* Need to pin this module until class device is destroyed */
|
||||
__module_get(THIS_MODULE);
|
||||
|
||||
retval = device_add(f_dev);
|
||||
if (retval) {
|
||||
dev_err(f_dev, "%s: device_register failed\n", __func__);
|
||||
goto err_put_dev;
|
||||
}
|
||||
|
||||
retval = device_create_bin_file(f_dev, &firmware_attr_data);
|
||||
if (retval) {
|
||||
dev_err(f_dev, "%s: sysfs_create_bin_file failed\n", __func__);
|
||||
goto err_del_dev;
|
||||
}
|
||||
|
||||
retval = device_create_file(f_dev, &dev_attr_loading);
|
||||
if (retval) {
|
||||
dev_err(f_dev, "%s: device_create_file failed\n", __func__);
|
||||
goto err_del_bin_attr;
|
||||
}
|
||||
|
||||
if (uevent) {
|
||||
dev_set_uevent_suppress(f_dev, false);
|
||||
dev_dbg(f_dev, "firmware: requesting %s\n", fw_priv->fw_id);
|
||||
if (timeout != MAX_SCHEDULE_TIMEOUT)
|
||||
mod_timer(&fw_priv->timeout,
|
||||
round_jiffies_up(jiffies + timeout));
|
||||
|
@ -577,7 +555,13 @@ static int _request_firmware(const struct firmware *firmware,
|
|||
fw_priv->fw = NULL;
|
||||
mutex_unlock(&fw_lock);
|
||||
|
||||
fw_destroy_instance(fw_priv);
|
||||
device_remove_file(f_dev, &dev_attr_loading);
|
||||
err_del_bin_attr:
|
||||
device_remove_bin_file(f_dev, &firmware_attr_data);
|
||||
err_del_dev:
|
||||
device_del(f_dev);
|
||||
err_put_dev:
|
||||
put_device(f_dev);
|
||||
return retval;
|
||||
}
|
||||
|
||||
|
@ -600,17 +584,19 @@ int
|
|||
request_firmware(const struct firmware **firmware_p, const char *name,
|
||||
struct device *device)
|
||||
{
|
||||
struct firmware_priv *fw_priv;
|
||||
int ret;
|
||||
|
||||
ret = _request_firmware_prepare(firmware_p, name, device);
|
||||
if (ret <= 0)
|
||||
return ret;
|
||||
fw_priv = _request_firmware_prepare(firmware_p, name, device, true,
|
||||
false);
|
||||
if (IS_ERR_OR_NULL(fw_priv))
|
||||
return PTR_RET(fw_priv);
|
||||
|
||||
ret = usermodehelper_read_trylock();
|
||||
if (WARN_ON(ret)) {
|
||||
dev_err(device, "firmware: %s will not be loaded\n", name);
|
||||
} else {
|
||||
ret = _request_firmware(*firmware_p, name, device, true, false,
|
||||
ret = _request_firmware_load(fw_priv, true,
|
||||
firmware_loading_timeout());
|
||||
usermodehelper_read_unlock();
|
||||
}
|
||||
|
@ -648,6 +634,7 @@ static int request_firmware_work_func(void *arg)
|
|||
{
|
||||
struct firmware_work *fw_work = arg;
|
||||
const struct firmware *fw;
|
||||
struct firmware_priv *fw_priv;
|
||||
long timeout;
|
||||
int ret;
|
||||
|
||||
|
@ -656,14 +643,16 @@ static int request_firmware_work_func(void *arg)
|
|||
return 0;
|
||||
}
|
||||
|
||||
ret = _request_firmware_prepare(&fw, fw_work->name, fw_work->device);
|
||||
if (ret <= 0)
|
||||
fw_priv = _request_firmware_prepare(&fw, fw_work->name, fw_work->device,
|
||||
fw_work->uevent, true);
|
||||
if (IS_ERR_OR_NULL(fw_priv)) {
|
||||
ret = PTR_RET(fw_priv);
|
||||
goto out;
|
||||
}
|
||||
|
||||
timeout = usermodehelper_read_lock_wait(firmware_loading_timeout());
|
||||
if (timeout) {
|
||||
ret = _request_firmware(fw, fw_work->name, fw_work->device,
|
||||
fw_work->uevent, true, timeout);
|
||||
ret = _request_firmware_load(fw_priv, fw_work->uevent, timeout);
|
||||
usermodehelper_read_unlock();
|
||||
} else {
|
||||
dev_dbg(fw_work->device, "firmware: %s loading timed out\n",
|
||||
|
|
Loading…
Reference in a new issue