request_firmware_nowait
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Name

request_firmware_nowait — asynchronous version of request_firmware

Synopsis

int request_firmware_nowait (struct module * module,
 bool uevent,
 const char * name,
 struct device * device,
 gfp_t gfp,
 void * context,
 void (*cont) (const struct firmware *fw, void *context));
 

Arguments

module

module requesting the firmware

uevent

sends uevent to copy the firmware image if this flag is non-zero else the firmware copy must be done manually.

name

name of firmware file

device

device for which firmware is being loaded

gfp

allocation flags

context

will be passed over to cont, and fw may be NULL if firmware request fails.

cont

function will be called asynchronously when the firmware request is over.

Description

Caller must hold the reference count of device.

Asynchronous variant of request_firmware for user contexts: - sleep for as small periods as possible since it may increase kernel boot time of built-in device drivers requesting firmware in their ->probe methods, if gfp is GFP_KERNEL.

- can't sleep at all if gfp is GFP_ATOMIC.

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