This patch set is based on the latest Felipe's usb.git / testing/next branch.
(commit id = 15e4292a2d21e9997fdb2b8c014cc461b3f268f0)
This patch set also needs an additional patch (like the end of this email)
to fix the renesas_usbhs driver for R-Car Gen3.
(I will submit this patch after v4.8-rc1 was released.)
I'm not sure this is a correct way or not. So, I added "RFC" in this patch set.
About the detail of this patch set, please refer to the commit log of
first patch ("usb: gadget: add a new quirk to avoid skb_reserve in u_ether.c").
Yoshihiro Shimoda (4):
usb: gadget: add a new quirk to avoid skb_reserve in u_ether.c
usb: gadget: u_ether: add a flag to avoid skb_reserve() calling
usb: gadget: f_ncm: add support for no_skb_reserve
usb: renesas_usbhs: set quirk_avoids_skb_reserve if USB-DMAC is used
drivers/usb/gadget/function/f_ncm.c | 2 ++
drivers/usb/gadget/function/u_ether.c | 5 ++++-
drivers/usb/gadget/function/u_ether.h | 1 +
drivers/usb/renesas_usbhs/mod_gadget.c | 2 ++
include/linux/usb/gadget.h | 13 +++++++++++++
5 files changed, 22 insertions(+), 1 deletion(-)
---
< about an additonal patch >
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Date: Thu, 7 Jul 2016 12:47:20 +0900
Subject: [PATCH] usb: renesas_usbhs: Fix receiving data corrupt on R-Car Gen3
with dmac
Since R-Car Gen3 SoC has the USB-DMAC, this driver should set
dparam->has_usb_dmac to 1. Otherwise, behavior of this driver and
the usb-dmac driver will be mismatch, then sometimes receiving data will
be corrupt.
Fixes: de18757e272d ("usb: renesas_usbhs: add R-Car Gen3 power control")
Cc: <stable@xxxxxxxxxxxxxxx> # v4.5+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
---
drivers/usb/renesas_usbhs/common.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index 8fbbc2d..ac67bab 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -514,7 +514,8 @@ static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev)
if (gpio > 0)
dparam->enable_gpio = gpio;
- if (dparam->type == USBHS_TYPE_RCAR_GEN2)
+ if (dparam->type == USBHS_TYPE_RCAR_GEN2 ||
+ dparam->type == USBHS_TYPE_RCAR_GEN3)
dparam->has_usb_dmac = 1;
return info;
--
1.9.1
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