Re: [PATCH 4.20, 5.0] mt76x02u: use usb_bulk_msg to upload firmware

[Greg KH <gregkh@linuxfoundation.org>]

On Thu, Mar 28, 2019 at 02:29:39PM +0100, Stanislaw Gruszka wrote:
> commit 5de4db8fcb6d6fc7d9064c22841211790c0ab81b upstream.
> 
> We don't need to send firmware data asynchronously, much simpler is just
> use synchronous usb_bulk_msg().
> 
> [ stable note: this patch was originally developed as cleanup, but it
> remove incorrect usage of page_frag_alloc(): alloc more than PAGE_SIZE
> and create not ARCH_DMA_MINALIGN dma buffers needed at least for
> performance reason. Was tested on 5.0 and 4.20, see
> https://bugzilla.kernel.org/show_bug.cgi?id=202673 and
> https://bugzilla.kernel.org/show_bug.cgi?id=202241 ]
> 
> Tested-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
> Signed-off-by: Felix Fietkau <nbd@nbd.name>
> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
> ---
>  drivers/net/wireless/mediatek/mt76/mt76.h          | 13 ++++++
>  .../net/wireless/mediatek/mt76/mt76x02_usb_mcu.c   | 52 +++++++---------------
>  drivers/net/wireless/mediatek/mt76/usb.c           |  1 -
>  3 files changed, 29 insertions(+), 37 deletions(-)

4.20 is now end-of-life, but I have queued this up for 5.0.y, thanks!

greg k-h