Re: [PATCH][next] net: phy: mdio-bcm-unimac: fix unsigned wrap-around when decrementing timeout

[David Miller]

From: Colin King <colin.king@xxxxxxxxxxxxx>
Date: Tue,  8 Aug 2017 10:52:32 +0100

> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> Change post-decrement compare to pre-decrement to avoid an
> unsigned integer wrap-around on timeout. This leads to the following
> !timeout check to never to be true so -ETIMEDOUT is never returned.
> 
> Detected by CoverityScan, CID#1452623 ("Logically dead code")
> 
> Fixes: 69a60b0579a4 ("net: phy: mdio-bcm-unimac: factor busy polling loop")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Applied.