From: Michal Schmidt Date: Tue, 25 Feb 2014 15:04:24 +0000 (+0100) Subject: bnx2x: clamp num_queues to prevent passing a negative value X-Git-Tag: v3.15-rc1~113^2~264^2~2 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=7d0445d66a7619e23257570daa794dbf1d89c2a6;p=linux.git bnx2x: clamp num_queues to prevent passing a negative value Use the clamp() macro to make the calculation of the number of queues slightly easier to understand. It also avoids a crash when someone accidentally passes a negative value in num_queues= module parameter. Signed-off-by: Michal Schmidt Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c index 89d75c24335c..34d124998823 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -61,10 +61,9 @@ static void bnx2x_add_all_napi(struct bnx2x *bp) static int bnx2x_calc_num_queues(struct bnx2x *bp) { - return bnx2x_num_queues ? - min_t(int, bnx2x_num_queues, BNX2X_MAX_QUEUES(bp)) : - min_t(int, netif_get_num_default_rss_queues(), - BNX2X_MAX_QUEUES(bp)); + int nq = bnx2x_num_queues ? : netif_get_num_default_rss_queues(); + nq = clamp(nq, 1, BNX2X_MAX_QUEUES(bp)); + return nq; } /**