linux-kernel - RE: [PATCH v2] usbnet: smsc95xx: disable carrier check while suspending

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Message-ID: <0573C9D4B793EF43BF95221F2F4CC8515B56CB@CHN-SV-EXMX06.mchp-main.com>
Date:   Thu, 1 Nov 2018 13:58:19 +0000
From:   <RaghuramChary.Jallipalli@...rochip.com>
To:     <frieder.schrempf@...tron.de>, <steve.glendinning@...well.net>,
        <UNGLinuxDriver@...rochip.com>
CC:     <davem@...emloft.net>, <netdev@...r.kernel.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <stable@...r.kernel.org>
Subject: RE: [PATCH v2] usbnet: smsc95xx: disable carrier check while
 suspending

> We need to make sure, that the carrier check polling is disabled while
> suspending. Otherwise we can end up with usbnet_read_cmd() being issued
> when only usbnet_read_cmd_nopm() is allowed. If this happens, read
> operations lock up.
> 
> Fixes: d69d169493 ("usbnet: smsc95xx: fix link detection for disabled
> autonegotiation")
> Cc: <stable@...r.kernel.org>
> Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>

Reviewed-by: Raghuram Chary J <RaghuramChary.Jallipalli@...rochip.com>

-Raghu