Thread (16 messages) 16 messages, 5 authors, 2025-06-19
STALE374d REVIEWED: 1 (0M)

[PATCH net-next 05/10] can: rcar_canfd: Simplify data access in rcar_canfd_{ge,pu}t_data()

From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: 2025-06-18 09:23:45
Also in: linux-can
Subsystem: can network drivers, the rest · Maintainers: Marc Kleine-Budde, Vincent Mailhol, Linus Torvalds

From: Geert Uytterhoeven <geert+renesas@glider.be>

Replace the repeated casts, pointer additions, and pointer dereferences
by array accesses to improve readability.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Vincent Mailhol <redacted>
Link: https://patch.msgid.link/4f43f44dcfda13d48a2c502648833934a51d9d6c.1749655315.git.geert+renesas@glider.be
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/net/can/rcar/rcar_canfd.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index 3244584a6ee5..dded509793bb 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -781,23 +781,23 @@ static void rcar_canfd_update_bit(void __iomem *base, u32 reg,
 static void rcar_canfd_get_data(struct rcar_canfd_channel *priv,
 				struct canfd_frame *cf, u32 off)
 {
+	u32 *data = (u32 *)cf->data;
 	u32 i, lwords;
 
 	lwords = DIV_ROUND_UP(cf->len, sizeof(u32));
 	for (i = 0; i < lwords; i++)
-		*((u32 *)cf->data + i) =
-			rcar_canfd_read(priv->base, off + i * sizeof(u32));
+		data[i] = rcar_canfd_read(priv->base, off + i * sizeof(u32));
 }
 
 static void rcar_canfd_put_data(struct rcar_canfd_channel *priv,
 				struct canfd_frame *cf, u32 off)
 {
+	const u32 *data = (u32 *)cf->data;
 	u32 i, lwords;
 
 	lwords = DIV_ROUND_UP(cf->len, sizeof(u32));
 	for (i = 0; i < lwords; i++)
-		rcar_canfd_write(priv->base, off + i * sizeof(u32),
-				 *((u32 *)cf->data + i));
+		rcar_canfd_write(priv->base, off + i * sizeof(u32), data[i]);
 }
 
 static void rcar_canfd_tx_failure_cleanup(struct net_device *ndev)
-- 
2.47.2

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