From: Douglas Anderson Date: Fri, 29 Jan 2016 02:19:52 +0000 (-0800) Subject: UPSTREAM: usb: dwc2: rockchip: Make the max_transfer_size automatic X-Git-Tag: firefly_0821_release~885 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=db77a6eb3420fe3f080a896a44a5f340cad30144;p=firefly-linux-kernel-4.4.55.git UPSTREAM: usb: dwc2: rockchip: Make the max_transfer_size automatic Previously we needed to set the max_transfer_size to explicitly be 65535 because the old driver would detect that our hardware could support much bigger transfers and then would try to do them. This wouldn't work since the DMA alignment code couldn't support it. Later in commit e8f8c14d9da7 ("usb: dwc2: clip max_transfer_size to 65535") upstream added support for clipping this automatically. Since that commit it has been OK to just use "-1" (default), but nobody bothered to change it. Let's change it to default now for two reasons: - It's nice to use autodetected params. - If we can remove the 65535 limit, we can transfer more! Change-Id: I020c984ac4edf32488743d4daa0e24168f3152c0 Signed-off-by: Douglas Anderson Acked-by: John Youn Tested-by: Heiko Stuebner Signed-off-by: Felipe Balbi Signed-off-by: Huang, Tao (cherry picked from commit 40eed7d78378f1f609680a8a891a50cce12ed612) --- diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 3993ff392916..13b7162513a4 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -129,7 +129,7 @@ static const struct dwc2_core_params params_rk3066 = { .host_rx_fifo_size = 520, /* 520 DWORDs */ .host_nperio_tx_fifo_size = 128, /* 128 DWORDs */ .host_perio_tx_fifo_size = 256, /* 256 DWORDs */ - .max_transfer_size = 65535, + .max_transfer_size = -1, .max_packet_count = -1, .host_channels = -1, .phy_type = -1,