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firmware loader: simplify holding module for request_firmware 

module reference doesn't cover direct loading path, so this patch
simply holds the module in the whole life time of request_firmware()
to fix the problem.

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ming Lei 2013-06-06 20:01:48 +08:00 committed by Greg Kroah-Hartman
parent 93232e46b2
commit d6c8aa3906
1 changed files with 7 additions and 6 deletions
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13
drivers/base/firmware_class.c
View File

@ -523,8 +523,6 @@ static void fw_dev_release(struct device *dev)
struct firmware_priv *fw_priv = to_firmware_priv(dev);
kfree(fw_priv);
module_put(THIS_MODULE);
}
static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
@ -852,9 +850,6 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
dev_set_uevent_suppress(f_dev, true);
/* 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__);
@ -1131,7 +1126,13 @@ int
request_firmware(const struct firmware **firmware_p, const char *name,
struct device *device)
{
return _request_firmware(firmware_p, name, device, true, false);
int ret;
/* Need to pin this module until return */
__module_get(THIS_MODULE);
ret = _request_firmware(firmware_p, name, device, true, false);
module_put(THIS_MODULE);
return ret;
}
EXPORT_SYMBOL(request_firmware);