netdev - Re: [PATCH] irda: fix overly long udelay()

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Date:   Sun, 27 Nov 2016 20:00:08 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     arnd@...db.de
Cc:     samuel@...tiz.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] irda: fix overly long udelay()

From: Arnd Bergmann <arnd@...db.de>
Date: Thu, 24 Nov 2016 17:26:22 +0100

> irda_get_mtt() returns a hardcoded '10000' in some cases,
> and with gcc-7, we get a build error because this triggers a
> compile-time check in udelay():
> 
> drivers/net/irda/w83977af_ir.o: In function `w83977af_hard_xmit':
> w83977af_ir.c:(.text.w83977af_hard_xmit+0x14c): undefined reference to `__bad_udelay'
> 
> Older compilers did not run into this because they either did not
> completely inline the irda_get_mtt() or did not consider the
> 10000 value a constant expression.
> 
> The code has been wrong since the start of git history.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied, thanks Arnd.