linux - request_firmware_nowait failure while loading driver (fw) -


i trying load driver module has firmware. driver trying push fw image hardware through remoteproc.

rproc_add calling "request_firmware_nowait" , encountered "-2" error @ fw_get_filesystem_firmware() api.

it seems file not found but, before call insmod, double checked path name , , seems fine. permission looks good.

if call direct firmware load call (changed kernel source code) , @ least, able find file.

any clue on this? seems failing filp_open inside fw_get_filesystem_firmware function , operation working on top of workqueue.

any information welcomed!

  • linux kernel 4.4.46
  • early stage boot up
  • using initrd , on ramfs (squashfs)
  • from workqueue, call request_firmware


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