linux-kernel - [PATCH] drm: remove unnecessary return variable

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Date:   Sat, 19 Oct 2019 10:18:40 +0300
From:   Wambui Karuga <wambui@...uga.xyz>
To:     dri-devel@...ts.freedesktop.org
Cc:     linux-kernel@...r.kernel.org, airlied@...ux.ie, daniel@...ll.ch,
        sean@...rly.run, mripard@...nel.org,
        maarten.lankhorst@...ux.intel.com,
        outreachy-kernel@...glegroups.com,
        Wambui Karuga <wambui.karugax@...il.com>
Subject: [PATCH] drm: remove unnecessary return variable

From: Wambui Karuga <wambui.karugax@...il.com>

Remove unnecessary variable `ret` in drm_dp_atomic_find_vcpi_slots()
only used to hold the function return value and have the function
return the value directly.
Issue found by coccinelle:
@@
local idexpression ret;
expression e;
@@

-ret =
+return
     e;
-return ret;

Signed-off-by: Wambui Karuga <wambui.karugax@...il.com>
---
 drivers/gpu/drm/drm_dp_mst_topology.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 9cccc5e63309..b854a422a523 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -3540,7 +3540,7 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state,
 {
 	struct drm_dp_mst_topology_state *topology_state;
 	struct drm_dp_vcpi_allocation *pos, *vcpi = NULL;
-	int prev_slots, req_slots, ret;
+	int prev_slots, req_slots;
 
 	topology_state = drm_atomic_get_mst_topology_state(state, mgr);
 	if (IS_ERR(topology_state))
@@ -3587,8 +3587,7 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state,
 	}
 	vcpi->vcpi = req_slots;
 
-	ret = req_slots;
-	return ret;
+	return req_slots;
 }
 EXPORT_SYMBOL(drm_dp_atomic_find_vcpi_slots);
 
-- 
2.23.0