diff options
| -rw-r--r-- | drivers/base/firmware_class.c | 58 |
1 files changed, 41 insertions, 17 deletions
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index deee871e509..60290671f04 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -435,7 +435,7 @@ static void firmware_class_timeout(u_long data) } static struct firmware_priv * -fw_create_instance(struct firmware *firmware, const char *fw_name, +fw_create_instance(const struct firmware *firmware, const char *fw_name, struct device *device, bool uevent, bool nowait) { struct firmware_priv *fw_priv; @@ -449,7 +449,7 @@ fw_create_instance(struct firmware *firmware, const char *fw_name, goto err_out; } - fw_priv->fw = firmware; + fw_priv->fw = (struct firmware *)firmware; fw_priv->nowait = nowait; strcpy(fw_priv->fw_id, fw_name); init_completion(&fw_priv->completion); @@ -510,13 +510,10 @@ static void fw_destroy_instance(struct firmware_priv *fw_priv) device_unregister(f_dev); } -static int _request_firmware(const struct firmware **firmware_p, - const char *name, struct device *device, - bool uevent, bool nowait) +static int _request_firmware_prepare(const struct firmware **firmware_p, + const char *name, struct device *device) { - struct firmware_priv *fw_priv; struct firmware *firmware; - int retval = 0; if (!firmware_p) return -EINVAL; @@ -533,10 +530,26 @@ static int _request_firmware(const struct firmware **firmware_p, return 0; } + return 1; +} + +static void _request_firmware_cleanup(const struct firmware **firmware_p) +{ + release_firmware(*firmware_p); + *firmware_p = NULL; +} + +static int _request_firmware(const struct firmware *firmware, + const char *name, struct device *device, + bool uevent, bool nowait) +{ + struct firmware_priv *fw_priv; + int retval; + retval = usermodehelper_read_trylock(); if (WARN_ON(retval)) { dev_err(device, "firmware: %s will not be loaded\n", name); - goto out_nolock; + return retval; } if (uevent) @@ -572,13 +585,6 @@ static int _request_firmware(const struct firmware **firmware_p, out: usermodehelper_read_unlock(); - -out_nolock: - if (retval) { - release_firmware(firmware); - *firmware_p = NULL; - } - return retval; } @@ -601,7 +607,17 @@ 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; + + ret = _request_firmware_prepare(firmware_p, name, device); + if (ret <= 0) + return ret; + + ret = _request_firmware(*firmware_p, name, device, true, false); + if (ret) + _request_firmware_cleanup(firmware_p); + + return ret; } /** @@ -639,8 +655,16 @@ static int request_firmware_work_func(void *arg) return 0; } - ret = _request_firmware(&fw, fw_work->name, fw_work->device, + ret = _request_firmware_prepare(&fw, fw_work->name, fw_work->device); + if (ret <= 0) + goto out; + + ret = _request_firmware(fw, fw_work->name, fw_work->device, fw_work->uevent, true); + if (ret) + _request_firmware_cleanup(&fw); + + out: fw_work->cont(fw, fw_work->context); module_put(fw_work->module); |