netdev - RE: mlx4: smatch stuff: saving error codes in u8

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Date:	Thu, 15 Dec 2011 09:05:46 +0000
From:	Yevgeny Petrilin <yevgenyp@...lanox.com>
To:	Dan Carpenter <dan.carpenter@...cle.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: mlx4: smatch stuff: saving error codes in u8

> Hi Yevgeny,
> 
> Smatch complains about some recent changes to the mlx4 driver:
> drivers/net/ethernet/mellanox/mlx4/cmd.c +364 mlx4_slave_cmd(27)
> 	warn: assigning -22 to unsigned variable 'vhcr->status'
> 
> We should be using the mlx4_status_to_errno() function here to
> translate
> the hardware error codes to linux error codes.
> 
> Also "ret" here gets passed to the the callers who again save it to
> vhcr_cmd->status = __mlx4_cmd() in mlx4_master_process_vhcr().  The
> __mlx4_cmd() function only returns linux error codes, not hardware
> error
> codes.
> 
> Also the mlx4_master_process_vhcr() function sets vhcr_cmd->status to
> linux error codes (which is a mistake) but it doesn't set "ret" on all
> paths so it sometimes returns success even though an error occured
> (which is a second separate mistake).
> 

Thanks Dan,
Will send fixes to this ASAP.
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