linux-kernel - [PATCH v2 1/2] media: renesas: rzg2l-cru: Simplify FIFO empty check

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Message-ID: <20250429091609.9947-2-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Tue, 29 Apr 2025 10:16:08 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Hans Verkuil <hverkuil@...all.nl>
Cc: linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Tommaso Merciai <tommaso.merciai.xr@...renesas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
	Dan Carpenter <dan.carpenter@...aro.org>
Subject: [PATCH v2 1/2] media: renesas: rzg2l-cru: Simplify FIFO empty check

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Collapse FIFO empty helper into a single return statement by removing the
redundant `if (amnfifopntr_w == amnfifopntr_r_y) return true;` path. Make
`rzg2l_fifo_empty()` directly return `amnfifopntr_w == amnfifopntr_r_y`
to improve readability without changing behavior.

Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
Closes: https://lore.kernel.org/all/aAtQThCibZCROETx@stanley.mountain/
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
index 067c6af14e95..3d0810b3c35e 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
@@ -345,8 +345,6 @@ bool rzg2l_fifo_empty(struct rzg2l_cru_dev *cru)
 	amnfifopntr_w = amnfifopntr & AMnFIFOPNTR_FIFOWPNTR;
 	amnfifopntr_r_y =
 		(amnfifopntr & AMnFIFOPNTR_FIFORPNTR_Y) >> 16;
-	if (amnfifopntr_w == amnfifopntr_r_y)
-		return true;
 
 	return amnfifopntr_w == amnfifopntr_r_y;
 }
-- 
2.49.0