linux-kernel - Re: [Intel-wired-lan] [PATCH] igc: change default return of igc_read_phy

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Message-ID: <1c0592d7-7d54-7834-61d4-f6b3183b5cf2@linux.intel.com>
Date:   Thu, 24 Jun 2021 22:58:28 +0300
From:   "Fuxbrumer, Dvora" <dvorax.fuxbrumer@...ux.intel.com>
To:     trix@...hat.com, jesse.brandeburg@...el.com,
        anthony.l.nguyen@...el.com, davem@...emloft.net, kuba@...nel.org,
        jeffrey.t.kirsher@...el.com, sasha.neftin@...el.com
Cc:     netdev@...r.kernel.org, intel-wired-lan@...ts.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [Intel-wired-lan] [PATCH] igc: change default return of
 igc_read_phy_reg()

On 5/21/2021 22:50, trix@...hat.com wrote:
> From: Tom Rix <trix@...hat.com>
> 
> Static analysis reports this problem
> 
> igc_main.c:4944:20: warning: The left operand of '&'
>    is a garbage value
>      if (!(phy_data & SR_1000T_REMOTE_RX_STATUS) &&
>            ~~~~~~~~ ^
> 
> pyy_data is set by the call to igc_read_phy_reg() only if
> there is a read_reg() op, else it is unset and a 0 is
> returned.  Change the return to -EOPNOTSUPP.
> 
> Fixes: 208983f099d9 ("igc: Add watchdog")
> Signed-off-by: Tom Rix <trix@...hat.com>
> ---
>   drivers/net/ethernet/intel/igc/igc.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@...ux.intel.com>