From: Yang Li Date: Thu, 18 Nov 2021 09:48:03 +0000 (+0800) Subject: ethernet: renesas: Use div64_ul instead of do_div X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=342aa207c9dafd9bfd0ce2ae12754a4d50543581;p=linux.git ethernet: renesas: Use div64_ul instead of do_div [ Upstream commit d9f31aeaa1e5aefa68130878af3c3513d41c1e2d ] do_div() does a 64-by-32 division. Here the divisor is an unsigned long which on some platforms is 64 bit wide. So use div64_ul instead of do_div to avoid a possible truncation. Eliminate the following coccicheck warning: ./drivers/net/ethernet/renesas/ravb_main.c:2492:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead. Reported-by: Abaci Robot Signed-off-by: Yang Li Reviewed-by: Geert Uytterhoeven Reviewed-by: Sergey Shtylyov Link: https://lore.kernel.org/r/1637228883-100100-1-git-send-email-yang.lee@linux.alibaba.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 0f85f2d97b18d..4e08b7219403c 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -30,8 +30,7 @@ #include #include #include - -#include +#include #include "ravb.h" @@ -2061,8 +2060,7 @@ static int ravb_set_gti(struct net_device *ndev) if (!rate) return -EINVAL; - inc = 1000000000ULL << 20; - do_div(inc, rate); + inc = div64_ul(1000000000ULL << 20, rate); if (inc < GTI_TIV_MIN || inc > GTI_TIV_MAX) { dev_err(dev, "gti.tiv increment 0x%llx is outside the range 0x%x - 0x%x\n",