On Mon, 2017-06-26 at 13:22 -0700, Bjorn Andersson wrote: > On Fri, Jun 23, 2017 at 9:03 AM, Greg Kroah-Hartman > <gre...@linuxfoundation.org> wrote: > > > > As Luis pointed out, there are no in-kernel users of > > request_firmware_into_buf(), so remove it, and the now unused > > internal > > flag, which simplifies the logic around buffer handling a bit. > > > > This API was implemented to reduce the memory pressure during > firmware > load in the Qualcomm remoteprocs, but it wasn't available when I > upstreamed that code and I apparently forgot to send out the patch > moving us over to use this API... > > Especially when loading the Qualcomm modem we have a couple of files > that we request_firmware() that are 10-15MB in size, so this > functionality is definitely wanted.
It may also at some point be very useful for FPGA partial reprogramming - the FPGA bitstreams are *not* small and most FPGAs you don't need all of it in kernel memory at the same moment. Alan