> Subject: [PATCH] RDMA/irdma: prevent some integer underflows
>
> My static checker complains that:
>
> drivers/infiniband/hw/irdma/ctrl.c:3605 irdma_sc_ceq_init()
> warn: can subtract underflow 'info->dev->hmc_fpm_misc.max_ceqs'?
>
> It appears that "info->dev->hmc_fpm_misc.max_ceqs" comes from the firmware
> in irdma_sc_parse_fpm_query_buf() so, yes, there is a chance that it could be
> zero. Even if we trust the firmware, it's easy enough to change the condition just
> as a hardenning measure.
>
> Fixes: 3f49d6842569 ("RDMA/irdma: Implement HW Admin Queue OPs")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
> drivers/infiniband/hw/irdma/ctrl.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
Seems reasonable.
Acked-by: Shiraz Saleem <shiraz.saleem@xxxxxxxxx>
