linux-kernel - [PATCH v3 06/19] drm/panel: sitronix-st7789v: simplify st7789v_spi

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Message-Id: <20230714013756.1546769-7-sre@kernel.org>
Date:   Fri, 14 Jul 2023 03:37:43 +0200
From:   Sebastian Reichel <sre@...nel.org>
To:     Sebastian Reichel <sre@...nel.org>
Cc:     Gerald Loacker <gerald.loacker@...fvision.net>,
        Michael Riesch <michael.riesch@...fvision.net>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org
Subject: [PATCH v3 06/19] drm/panel: sitronix-st7789v: simplify st7789v_spi_write

st7789v_spi_write initializes a message with just
a single transfer, spi_sync_transfer can be used
for that.

Reviewed-by: Michael Riesch <michael.riesch@...fvision.net>
Signed-off-by: Sebastian Reichel <sre@...nel.org>
---
 drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
index 1d43b8cc1647..6290bd49d055 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
@@ -129,17 +129,13 @@ static int st7789v_spi_write(struct st7789v *ctx, enum st7789v_prefix prefix,
 			     u8 data)
 {
 	struct spi_transfer xfer = { };
-	struct spi_message msg;
 	u16 txbuf = ((prefix & 1) << 8) | data;
 
-	spi_message_init(&msg);
-
 	xfer.tx_buf = &txbuf;
 	xfer.bits_per_word = 9;
 	xfer.len = sizeof(txbuf);
 
-	spi_message_add_tail(&xfer, &msg);
-	return spi_sync(ctx->spi, &msg);
+	return spi_sync_transfer(ctx->spi, &xfer, 1);
 }
 
 static int st7789v_write_command(struct st7789v *ctx, u8 cmd)
-- 
2.40.1