linux-kernel - [PATCH][next] gpu: host1x: remove redundant assignment to variable space

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Date: Thu, 15 Feb 2024 22:43:01 +0000
From: Colin Ian King <colin.i.king@...il.com>
To: Thierry Reding <thierry.reding@...il.com>,
	Mikko Perttunen <mperttunen@...dia.com>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	dri-devel@...ts.freedesktop.org,
	linux-tegra@...r.kernel.org
Cc: kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH][next] gpu: host1x: remove redundant assignment to variable space

The variable space is being initialized with a value that is never read,
it is being re-assigned later on. The initialization is redundant and
can be removed. Also merge two declaration lines together.

Cleans up clang scan build warning:
drivers/gpu/host1x/cdma.c:628:15: warning: Value stored to 'space'
during its initialization is never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 drivers/gpu/host1x/cdma.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c
index d1336e438f4f..407ed9b9cf64 100644
--- a/drivers/gpu/host1x/cdma.c
+++ b/drivers/gpu/host1x/cdma.c
@@ -625,8 +625,7 @@ void host1x_cdma_push_wide(struct host1x_cdma *cdma, u32 op1, u32 op2,
 	struct host1x_channel *channel = cdma_to_channel(cdma);
 	struct host1x *host1x = cdma_to_host1x(cdma);
 	struct push_buffer *pb = &cdma->push_buffer;
-	unsigned int space = cdma->slots_free;
-	unsigned int needed = 2, extra = 0;
+	unsigned int space, needed = 2, extra = 0;
 
 	if (host1x_debug_trace_cmdbuf)
 		trace_host1x_cdma_push_wide(dev_name(channel->dev), op1, op2,
-- 
2.39.2