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Date: Wed, 19 Oct 2022 00:58:50 -0500 From: "Gustavo A. R. Silva" <gustavo@...eddedor.com> To: Kees Cook <keescook@...omium.org>, "Gustavo A. R. Silva" <gustavoars@...nel.org> Cc: Kalle Valo <kvalo@...nel.org>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org, linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org Subject: Re: [PATCH 6/6][next] airo: Avoid clashing function prototypes On 10/17/22 21:53, Kees Cook wrote: > On Mon, Oct 17, 2022 at 03:36:20PM -0500, Gustavo A. R. Silva wrote: >> [...] >> @@ -6312,16 +6326,16 @@ static int airo_get_mode(struct net_device *dev, >> /* If not managed, assume it's ad-hoc */ >> switch (local->config.opmode & MODE_CFG_MASK) { >> case MODE_STA_ESS: >> - *uwrq = IW_MODE_INFRA; >> + uwrq->mode = IW_MODE_INFRA; >> break; >> case MODE_AP: >> - *uwrq = IW_MODE_MASTER; >> + uwrq->mode = IW_MODE_MASTER; >> break; >> case MODE_AP_RPTR: >> - *uwrq = IW_MODE_REPEAT; >> + uwrq->mode = IW_MODE_REPEAT; >> break; >> default: >> - *uwrq = IW_MODE_ADHOC; >> + uwrq->mode = IW_MODE_ADHOC; >> } >> >> return 0; > > Sometimes you use the union directly, sometimes not. What was your > heuristic for that? Oh it is just that I had previously used a new variable in function airo_set_mode(), and then I immediately ran into this similar scenario (function airo_get_mode) and I said "wait a second, why don't I directly use the union, instead? :thinking_face:" and I did, and moved on. :P > > Regardless, looks good! > > Reviewed-by: Kees Cook <keescook@...omium.org> > Thanks for this! BTW, I already have a new series (this time a 4-patch series, instead of 6), with the latest fixes, here: https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/log/?h=6.1-rc1-Wcast-function-type-strict I think we could quickly review it tomorrow before I send it out. :) -- Gustavo
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