diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/base/firmware_loader/main.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c index 2913bb0e5e7b..eb34089e4299 100644 --- a/drivers/base/firmware_loader/main.c +++ b/drivers/base/firmware_loader/main.c @@ -657,6 +657,30 @@ int request_firmware_direct(const struct firmware **firmware_p, EXPORT_SYMBOL_GPL(request_firmware_direct); /** + * firmware_request_cache: - cache firmware for suspend so resume can use it + * @name: name of firmware file + * @device: device for which firmware should be cached for + * + * There are some devices with an optimization that enables the device to not + * require loading firmware on system reboot. This optimization may still + * require the firmware present on resume from suspend. This routine can be + * used to ensure the firmware is present on resume from suspend in these + * situations. This helper is not compatible with drivers which use + * request_firmware_into_buf() or request_firmware_nowait() with no uevent set. + **/ +int firmware_request_cache(struct device *device, const char *name) +{ + int ret; + + mutex_lock(&fw_lock); + ret = fw_add_devm_name(device, name); + mutex_unlock(&fw_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(firmware_request_cache); + +/** * request_firmware_into_buf - load firmware into a previously allocated buffer * @firmware_p: pointer to firmware image * @name: name of firmware file |