Message-ID: <20230706021102.2066-1-yangrong@vivo.com>
Date:   Thu,  6 Jul 2023 10:06:16 +0800
From:   Yang Rong <yangrong@...o.com>
To:     Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Jens Axboe <axboe@...nel.dk>,
        Pavel Begunkov <asml.silence@...il.com>,
        Alvin Lee <Alvin.Lee2@....com>, Jun Lei <Jun.Lei@....com>,
        Qingqing Zhuo <qingqing.zhuo@....com>,
        Max Tseng <Max.Tseng@....com>,
        Josip Pavic <Josip.Pavic@....com>,
        Cruise Hung <cruise.hung@....com>,
        amd-gfx@...ts.freedesktop.org (open list:AMD DISPLAY CORE),
        dri-devel@...ts.freedesktop.org (open list:DRM DRIVERS),
        linux-kernel@...r.kernel.org (open list),
        virtualization@...ts.linux-foundation.org (open list:VIRTIO CORE AND
        NET DRIVERS),
        netdev@...r.kernel.org (open list:NETWORKING DRIVERS),
        io-uring@...r.kernel.org (open list:IO_URING)
Cc:     opensource.kernel@...o.com, luhongfei@...o.com,
        Yang Rong <yangrong@...o.com>
Subject: [PATCH] Fix max/min warnings in virtio_net, amd/display, and io_uring

The files drivers/net/virtio_net.c, drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c, and io_uring/io_uring.c were modified to fix warnings.
Specifically, the opportunities for max() and min() were utilized to address the warnings.

Signed-off-by: Yang Rong <yangrong@...o.com>
---
 drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 6 +++---
 drivers/net/virtio_net.c                     | 3 ++-
 io_uring/io_uring.c                          | 3 ++-
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
index c753c6f30dd7..df79aea49a3c 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
@@ -22,7 +22,7 @@
  * Authors: AMD
  *
  */
-
+#include <linux/minmax.h>
 #include "dc.h"
 #include "dc_dmub_srv.h"
 #include "../dmub/dmub_srv.h"
@@ -481,7 +481,7 @@ static void populate_subvp_cmd_drr_info(struct dc *dc,
        max_drr_vblank_us = div64_u64((subvp_active_us - prefetch_us -
                        dc->caps.subvp_fw_processing_delay_us - drr_active_us), 2) + drr_active_us;
        max_drr_mallregion_us = subvp_active_us - prefetch_us - mall_region_us - dc->caps.subvp_fw_processing_delay_us;
-       max_drr_supported_us = max_drr_vblank_us > max_drr_mallregion_us ? max_drr_vblank_us : max_drr_mallregion_us;
+       max_drr_supported_us = max(max_drr_vblank_us, max_drr_mallregion_us);
        max_vtotal_supported = div64_u64(((uint64_t)drr_timing->pix_clk_100hz * 100 * max_drr_supported_us),
                        (((uint64_t)drr_timing->h_total * 1000000)));

@@ -771,7 +771,7 @@ void dc_dmub_setup_subvp_dmub_command(struct dc *dc,
                wm_val_refclk = context->bw_ctx.bw.dcn.watermarks.a.cstate_pstate.pstate_change_ns *
                                (dc->res_pool->ref_clocks.dchub_ref_clock_inKhz / 1000) / 1000;

-               cmd.fw_assisted_mclk_switch_v2.config_data.watermark_a_cache = wm_val_refclk < 0xFFFF ? wm_val_refclk : 0xFFFF;
+               cmd.fw_assisted_mclk_switch_v2.config_data.watermark_a_cache = min(wm_val_refclk, 0xFFFF);
        }

        dm_execute_dmub_cmd(dc->ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 9b3721424e71..5bb7da885f00 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -22,6 +22,7 @@
 #include <net/route.h>
 #include <net/xdp.h>
 #include <net/net_failover.h>
+#include <linux/minmax.h>

 static int napi_weight = NAPI_POLL_WEIGHT;
 module_param(napi_weight, int, 0444);
@@ -1291,7 +1292,7 @@ static struct sk_buff *build_skb_from_xdp_buff(struct net_device *dev,
        __skb_put(skb, data_len);

        metasize = xdp->data - xdp->data_meta;
-       metasize = metasize > 0 ? metasize : 0;
+       metasize = max(metasize, 0);
        if (metasize)
                skb_metadata_set(skb, metasize);

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index e8096d502a7c..875ca657227d 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -47,6 +47,7 @@
 #include <linux/refcount.h>
 #include <linux/uio.h>
 #include <linux/bits.h>
+#include <linux/minmax.h>

 #include <linux/sched/signal.h>
 #include <linux/fs.h>
@@ -2660,7 +2661,7 @@ static void *__io_uaddr_map(struct page ***pages, unsigned short *npages,
                                        page_array);
        if (ret != nr_pages) {
 err:
-               io_pages_free(&page_array, ret > 0 ? ret : 0);
+               io_pages_free(&page_array, max(ret, 0));
                return ret < 0 ? ERR_PTR(ret) : ERR_PTR(-EFAULT);
        }
        /*
--
2.35.3


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