netdev - Re: [PATCH 2/3] net: fix netdev features shift for features bit

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Date:	Sun, 21 Apr 2013 15:50:56 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	kaber@...sh.net
Cc:	netdev@...r.kernel.org, amwang@...hat.com
Subject: Re: [PATCH 2/3] net: fix netdev features shift for features bit >
 31

From: Patrick McHardy <kaber@...sh.net>
Date: Sun, 21 Apr 2013 12:09:33 +0200

>    drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c: In function 'qlcnic_set_netdev_features':
>>> drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c:967:7: warning: large integer implicitly truncated to unsigned type [-Woverflow]
> 
> This should be fixed by explicitly using 1ULL for the shifted value.
> 
> Reported-by: kbuild test robot <fengguang.wu@...el.com>
> Signed-off-by: Patrick McHardy <kaber@...sh.net>

The limitation is in the variable being assigned to, not the value
itself.

The "1" is already cast to a netdev_features_t by the macro
definition.
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