Re: [PATCH v2 0/4] netdev/phy: 10G PHY support.

[David Daney <ddaney.cavm@xxxxxxxxx>]

On 06/27/2012 09:29 PM, David Miller wrote:
> From: David Daney<ddaney.cavm@xxxxxxxxx>
> Date: Wed, 27 Jun 2012 10:33:34 -0700
>
> > From: David Daney<david.daney@xxxxxxxxxx>
> >
> > The only non-cosmetic change from v1 is to pass an additional argument
> > to get_phy_device() that indicates that the PHY uses 802.3 clause 45
> > signaling, previously I had been using a high order bit of the addr
> > parameter for this.
> >
> > There are also changes from v1 in the code and comment formatting.
> > These should now be closer to what David Miller prefers.
>
> Applied, but I had to add the following warning fixup:

Thank You.

> --------------------
> phy: Fix warning in get_phy_device().
>
> drivers/net/phy/phy_device.c: In function ʽget_phy_deviceʼ:
> drivers/net/phy/phy_device.c:340:14: warning: ʽphy_idʼ may be used uninitialized in this function [-Wmaybe-uninitialized]
>
> GCC can't see that when we return zero we always initialize
> phy_id and that's the only path where we use it.
>
> Initialize phy_id to zero to shut it up.

FWIW: I was testing with GCC-4.6.3 and saw no such warnings.

David Daney


> Signed-off-by: David S. Miller<davem@xxxxxxxxxxxxx>
> ---
>   drivers/net/phy/phy_device.c |    4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
> index ef4cdee..47e02e7 100644
> --- a/drivers/net/phy/phy_device.c
> +++ b/drivers/net/phy/phy_device.c
> @@ -327,9 +327,9 @@ static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id,
>    */
>   struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
>   {
> -	struct phy_device *dev = NULL;
> -	u32 phy_id;
>   	struct phy_c45_device_ids c45_ids = {0};
> +	struct phy_device *dev = NULL;
> +	u32 phy_id = 0;
>   	int r;
>
>   	r = get_phy_id(bus, addr,&phy_id, is_c45,&c45_ids);

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