Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966573AbbBDQCi (ORCPT ); Wed, 4 Feb 2015 11:02:38 -0500 Received: from xavier.telenet-ops.be ([195.130.132.52]:44433 "EHLO xavier.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755546AbbBDQCg (ORCPT ); Wed, 4 Feb 2015 11:02:36 -0500 From: Geert Uytterhoeven To: David Airlie , Alexandre Courbot Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-next@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH -next] drm/nouveau/clk: Use plain "/" for 32-bit division Date: Wed, 4 Feb 2015 17:02:35 +0100 Message-Id: <1423065755-19337-1-git-send-email-geert@linux-m68k.org> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3077 Lines: 66 On 32-bit platforms using asm-generic/div64.h: drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c: In function 'gk20a_pllg_calc_rate': drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c:147:79: warning: comparison of distinct pointer types lacks a cast do_div(rate, divider); ^ drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c:147:2: warning: right shift count >= width of type do_div(rate, divider); ^ drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c:147:238: warning: passing argument 1 of '__div64_32' from incompatible pointer type do_div(rate, divider); ^ In file included from arch/parisc/include/generated/asm/div64.h:1:0, from include/linux/kernel.h:124, from include/linux/list.h:8, from include/linux/preempt.h:10, from include/linux/spinlock.h:50, from include/linux/mmzone.h:7, from include/linux/gfp.h:5, from include/linux/slab.h:14, from drivers/gpu/drm/nouveau/include/nvif/os.h:5, from drivers/gpu/drm/nouveau/include/nvkm/core/os.h:3, from drivers/gpu/drm/nouveau/include/nvkm/core/object.h:3, from drivers/gpu/drm/nouveau/include/nvkm/core/subdev.h:3, from drivers/gpu/drm/nouveau/include/nvkm/subdev/clk.h:3, from drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c:25: include/asm-generic/div64.h:35:17: note: expected 'uint64_t *' but argument is of type 'u32 *' extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor); ^ do_div() is meant for 64-bit by 32-bit division, but both the dividend and divisor are 32-bit here. Hence use plain "/" instead. Signed-off-by: Geert Uytterhoeven --- Compile-tested only. parisc/allmodconfig: http://kisskb.ellerman.id.au/kisskb/buildresult/12358386/ --- drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c index 65c532742b08d1c6..022595876ea4dc85 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c @@ -144,9 +144,8 @@ gk20a_pllg_calc_rate(struct gk20a_clk_priv *priv) rate = priv->parent_rate * priv->n; divider = priv->m * pl_to_div[priv->pl]; - do_div(rate, divider); - return rate / 2; + return rate / divider / 2; } static int -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/