netdev - [BUG] tulip/de4x5: a possible sleep-in-atomic bug in de4x5

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Date:   Wed, 13 Dec 2017 18:13:53 +0800
From:   Jia-Ju Bai <baijiaju1990@...il.com>
To:     davem@...emloft.net,
        Stephen Hemminger <stephen@...workplumber.org>,
        keescook@...omium.org, dhowells@...hat.com, allen.lkml@...il.com,
        johannes.berg@...el.com, arvind.yadav.cs@...il.com
Cc:     netdev@...r.kernel.org, linux-parisc@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [BUG] tulip/de4x5: a possible sleep-in-atomic bug in de4x5_interrupt

According to drivers/net/ethernet/dec/tulip/de4x5.c, the driver may 
sleep in the interrupt handler.
The function call path is:
de4x5_interrupt (interrupt handler)
   synchronize_irq --> may sleep

I do not find a good way to fix it, so I only report.
This possible bug is found by my static analysis tool (DSAC) and checked 
by my code review.

Thanks,
Jia-Ju Bai