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From: Felipe Balbi <balbi@kernel.org>
To: Chunfeng Yun <chunfeng.yun@mediatek.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Pawel Laszczak <pawell@cadence.com>,
Al Cooper <alcooperx@gmail.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
Yang Yingliang <yangyingliang@huawei.com>,
Rikard Falkeborn <rikard.falkeborn@gmail.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
bcm-kernel-feedback-list@broadcom.com,
linux-tegra@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
Eddie Hung <eddie.hung@mediatek.com>
Subject: Re: [PATCH 4/6] usb: gadget: tegra-xudc: fix the wrong mult value for HS isoc or intr
Date: Thu, 12 Aug 2021 09:51:52 +0300 [thread overview]
Message-ID: <87k0kryx20.fsf@kernel.org> (raw)
In-Reply-To: <1628739182-30089-4-git-send-email-chunfeng.yun@mediatek.com>
Chunfeng Yun <chunfeng.yun@mediatek.com> writes:
> usb_endpoint_maxp() only returns the bit[10:0] of wMaxPacketSize
> of endpoint descriptor, not includes bit[12:11] anymore, so use
> usb_endpoint_maxp_mult() instead.
> Meanwhile no need AND 0x7ff when get maxp, remove it.
>
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
> ---
> drivers/usb/gadget/udc/tegra-xudc.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c
> index a54d1cef17db..40a7417e7ae4 100644
> --- a/drivers/usb/gadget/udc/tegra-xudc.c
> +++ b/drivers/usb/gadget/udc/tegra-xudc.c
> @@ -1610,7 +1610,7 @@ static void tegra_xudc_ep_context_setup(struct tegra_xudc_ep *ep)
> u16 maxpacket, maxburst = 0, esit = 0;
> u32 val;
>
> - maxpacket = usb_endpoint_maxp(desc) & 0x7ff;
> + maxpacket = usb_endpoint_maxp(desc);
> if (xudc->gadget.speed == USB_SPEED_SUPER) {
> if (!usb_endpoint_xfer_control(desc))
> maxburst = comp_desc->bMaxBurst;
> @@ -1621,7 +1621,7 @@ static void tegra_xudc_ep_context_setup(struct tegra_xudc_ep *ep)
> (usb_endpoint_xfer_int(desc) ||
> usb_endpoint_xfer_isoc(desc))) {
> if (xudc->gadget.speed == USB_SPEED_HIGH) {
> - maxburst = (usb_endpoint_maxp(desc) >> 11) & 0x3;
> + maxburst = usb_endpoint_maxp_mult(desc) - 1;
this looks like a bug fix. Before this change, maxburst was always 0,
right?
In any case:
Acked-by: Felipe Balbi <balbi@kernel.org>
--
balbi
next prev parent reply other threads:[~2021-08-12 6:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-12 3:32 [PATCH 1/6] usb: mtu3: restore HS function when set SS/SSP Chunfeng Yun
2021-08-12 3:32 ` [PATCH 2/6] usb: mtu3: fix the wrong HS mult value Chunfeng Yun
2021-08-12 6:49 ` Felipe Balbi
2021-08-12 11:51 ` Chunfeng Yun (云春峰)
2021-08-12 3:32 ` [PATCH 3/6] usb: cdnsp: fix the wrong mult value for HS isoc or intr Chunfeng Yun
2021-08-12 6:51 ` Felipe Balbi
2021-08-12 11:53 ` Chunfeng Yun (云春峰)
2021-08-17 5:05 ` Pawel Laszczak
2021-08-17 7:10 ` Chunfeng Yun (云春峰)
2021-08-12 3:33 ` [PATCH 4/6] usb: gadget: tegra-xudc: " Chunfeng Yun
2021-08-12 6:51 ` Felipe Balbi [this message]
2021-08-12 11:54 ` Chunfeng Yun (云春峰)
2021-08-12 3:33 ` [PATCH 5/6] usb: gadget: bdc: remove unnecessary AND operation when get ep maxp Chunfeng Yun
2021-08-12 6:52 ` Felipe Balbi
2021-08-12 3:33 ` [PATCH 6/6] usb: gadget: " Chunfeng Yun
2021-08-12 6:52 ` Felipe Balbi
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