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SubjectRe: [PATCH][next] usb: typec: mux: fix an unsigned less than zero check
On Tue, Feb 19, 2019 at 03:19:18PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> The checks of a negative nval indicating an error an never be true
> as nval is currently a size_t which is of course unsigned and hence
> never less than zero. Fix this by making nval an int.
>
> Detected by CoverityScan, CID#1476863 ("Unsigned compared against 0)
> and CID#1476948 ("Loop bound")
>
> Fixes: 96a6d031ca99 ("usb: typec: mux: Find the muxes by also matching against the device node")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/usb/typec/mux.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c
> index b94e2920eb38..64d2ed3fecb8 100644
> --- a/drivers/usb/typec/mux.c
> +++ b/drivers/usb/typec/mux.c
> @@ -126,10 +126,9 @@ static void *typec_mux_match(struct device_connection *con, int ep, void *data)
> {
> const struct typec_altmode_desc *desc = data;
> struct typec_mux *mux;
> - size_t nval;
> bool match;
> u16 *val;
> - int i;
> + int i, nval;
>
> if (!con->fwnode) {
> list_for_each_entry(mux, &mux_list, entry)
> --
> 2.20.1

This one has already a fix:
https://lkml.org/lkml/2019/2/19/56

thanks,

--
heikki

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