netdev - Bug in ks8851.c

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Message-ID: <b703c70840da4780bc93beed79a8503b@DB3PR02MB202.eurprd02.prod.outlook.com>
Date:	Tue, 1 Apr 2014 15:41:58 +0000
From:	"Nekludov, Max" <Max.Nekludov@...ter.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Nekludov, Max" <Max.Nekludov@...ter.com>,
	"David S. Miller" <davem@...emloft.net>,
	"Network Development" <netdev@...r.kernel.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Matt Renzelmann <mjr@...wisc.edu>,
	Jiri Pirko <jiri@...nulli.us>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"trivial@...tcorp.com.au" <trivial@...tcorp.com.au>,
	"\"David S. Miller\"" <davem@...emloft.net>
Subject: Bug in ks8851.c

Reset on RX failure and TX timeout.

Electromagnetic noice can make device to not send TX interrupts.
As result outgoing queue will be suspended forever.
Also EMI can raise RX interrupt with zero value in KS_RXFC register.

Patch attached.
View attachment "0001-ks8851-reset-on-RX-falure-and-TX-timeout.patch" of type "text/x-diff" (4553 bytes)