Re: [PATCH] isci: Fix infinite loop in while loop

From: James Bottomley
Date: Fri Apr 20 2018 - 05:46:36 EST

On Fri, 2018-04-20 at 10:03 +0100, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> In the case when the phy_mask is bitwise anded with the
> phy_index bit is zero the continue statement currently jumps
> to the next iteration of the while loop and phy_index is
> never actually incremented, potentially causing an infinite
> loop if phy_index is less than SCI_MAX_PHS. Fix this by
> jumping to the increment of phy_index.
> [ The goto is used to save one more level of nesting that
> makes the code far wider than 80 columns. ]

what's wrong with replacing the while() with a for() that just works
(removing the increment at the end). This is effectively open coding a
for loop anyway, which is a pattern we wouldn't want replicated.