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From: Felipe Balbi <balbi@kernel.org>
To: Peter Chen <peter.chen@nxp.com>, pawell@cadence.com, rogerq@ti.com
Cc: linux-usb@vger.kernel.org, linux-imx@nxp.com,
	gregkh@linuxfoundation.org, jun.li@nxp.com,
	stable@vger.kernel.org, Peter Chen <peter.chen@nxp.com>
Subject: Re: [PATCH 3/3] usb: cdns3: Fix on-chip memory overflow issue
Date: Tue, 27 Oct 2020 11:11:13 +0200
Message-ID: <87sga0c9u6.fsf@kernel.org> (raw)
In-Reply-To: <20201016101659.29482-4-peter.chen@nxp.com>


Hi,

Peter Chen <peter.chen@nxp.com> writes:
> From: Pawel Laszczak <pawell@cadence.com>
>
> Patch fixes issue caused setting On-chip memory overflow bit in usb_sts
> register. The issue occurred because EP_CFG register was set twice
> before USB_STS.CFGSTS was set. Every write operation on EP_CFG.BUFFERING
> causes that controller increases internal counter holding the number
> of reserved on-chip buffers. First time this register was updated in
> function cdns3_ep_config before delegating SET_CONFIGURATION request
> to class driver and again it was updated when class wanted to enable
> endpoint.  This patch fixes this issue by configuring endpoints
> enabled by class driver in cdns3_gadget_ep_enable and others just
> before status stage.
>
> Cc: <stable@vger.kernel.org> #v5.8+
> Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver")
> Reported-and-tested-by: Peter Chen <peter.chen@nxp.com>
> Signed-off-by: Pawel Laszczak <pawell@cadence.com>
> Signed-off-by: Peter Chen <peter.chen@nxp.com>

This looks very large for a fix, are you sure there isn't a minimal fix
hidden somewhere?

-- 
balbi

      reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-16 10:16 [PATCH 0/3] usb: cdns3: three bug fixes for v5.10 Peter Chen
2020-10-16 10:16 ` [PATCH 1/3] usb: cdns3: gadget: suspicious implicit sign extension Peter Chen
2020-10-27  9:03   ` Felipe Balbi
2020-10-27  9:48     ` Peter Chen
2020-10-27 10:08       ` David Laight
2020-10-27 14:21       ` Alan Stern
2020-10-28  6:41         ` Peter Chen
2020-10-27  9:03   ` Felipe Balbi
2020-10-16 10:16 ` [PATCH 2/3] usb: cdns3: gadget: own the lock wrongly at the suspend routine Peter Chen
2020-10-27  9:08   ` Felipe Balbi
2020-10-27  9:08   ` Felipe Balbi
2020-10-16 10:16 ` [PATCH 3/3] usb: cdns3: Fix on-chip memory overflow issue Peter Chen
2020-10-27  9:11   ` Felipe Balbi [this message]

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