linux-kernel - Re: [PATCH] drivers: net: xgene: Add missing initialization in xgene_enet_ecc

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Message-ID: <CAKh23F=2nNC8TkD-ftzfZ-pLEKG0CuwZ=RkX5O4aoOu4Y45Xpw@mail.gmail.com>
Date:	Mon, 20 Oct 2014 11:20:09 -0700
From:	Iyappan Subramanian <isubramanian@....com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Keyur Chudgar <kchudgar@....com>,
	netdev <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers: net: xgene: Add missing initialization in xgene_enet_ecc_init()

On Mon, Oct 20, 2014 at 1:08 AM, Geert Uytterhoeven
<geert@...ux-m68k.org> wrote:
> drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c: In function ‘xgene_enet_ecc_init’:
> drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c:126: warning: ‘data’ may be used uninitialized in this function
>
> Depending on the arbitrary value on the stack, the loop may terminate
> too early, and cause a bogus -ENODEV failure.
>
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> ---
>  drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c b/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c
> index e6d24c2101982444..19e13583b4259cd4 100644
> --- a/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c
> +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c
> @@ -123,7 +123,7 @@ static u32 xgene_enet_rd_mac(struct xgene_enet_pdata *p, u32 rd_addr)
>  static int xgene_enet_ecc_init(struct xgene_enet_pdata *p)
>  {
>         struct net_device *ndev = p->ndev;
> -       u32 data;
> +       u32 data = 0;
>         int i;
>
>         xgene_enet_wr_diag_csr(p, ENET_CFG_MEM_RAM_SHUTDOWN_ADDR, 0);
> --
> 1.9.1
>

Acked-by: Iyappan Subramanian <isubramanian@....com>
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