Subject: Re: [PATCH net-next 2/6] net: mdio: Rework scanning of bus ready for quirks

From: Jakub Kicinski <[email-masked]>
Date: Tue, 17 Jan 2023 17:17:40 -0800

On Mon, 16 Jan 2023 13:55:14 +0100 Michael Walle wrote:
> From: Andrew Lunn <[email-masked]>
> 
> Some C22 PHYs do bad things when there are C45 transactions on the
> bus. In order to handle this, the bus needs to be scanned first for
> C22 at all addresses, and then C45 scanned for all addresses.
> 
> The Marvell pxa168 driver scans a specific address on the bus to find
> its PHY. This is a C22 only device, so update it to use the c22
> helper.

clang says:

drivers/net/phy/mdio_bus.c:708:11: warning: variable 'i' is uninitialized when used here [-Wuninitialized]
        while (--i >= 0) {
                 ^
drivers/net/phy/mdio_bus.c:620:7: note: initialize the variable 'i' to silence this warning
        int i, err;
             ^
              = 0