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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 3/6] usb: cdnsp: fix the wrong mult value for HS isoc or intr
Date: Thu, 12 Aug 2021 09:51:03 +0300	[thread overview]
Message-ID: <87mtpnyx3g.fsf@kernel.org> (raw)
In-Reply-To: <1628739182-30089-3-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 include bit[12:11] anymore, so use
> usb_endpoint_maxp_mult() instead.
>
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
> ---
>  drivers/usb/cdns3/cdnsp-mem.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/cdns3/cdnsp-mem.c b/drivers/usb/cdns3/cdnsp-mem.c
> index a47948a1623f..ad9aee3f1e39 100644
> --- a/drivers/usb/cdns3/cdnsp-mem.c
> +++ b/drivers/usb/cdns3/cdnsp-mem.c
> @@ -882,7 +882,7 @@ static u32 cdnsp_get_endpoint_max_burst(struct usb_gadget *g,
>  	if (g->speed == USB_SPEED_HIGH &&
>  	    (usb_endpoint_xfer_isoc(pep->endpoint.desc) ||
>  	     usb_endpoint_xfer_int(pep->endpoint.desc)))
> -		return (usb_endpoint_maxp(pep->endpoint.desc) & 0x1800) >> 11;
> +		return usb_endpoint_maxp_mult(pep->endpoint.desc) - 1;

this looks like a bugfix. Do we need to Cc stable here?

In any case:

Acked-by: Felipe Balbi <balbi@kernel.org>

-- 
balbi

  reply	other threads:[~2021-08-12  6:51 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 [this message]
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
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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