linux-kernel - [PATCH 1/5] Input: cypress_ps2 - clean up setting reporting rate

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Date: Fri, 28 Jun 2024 15:47:23 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: linux-input@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] Input: cypress_ps2 - clean up setting reporting rate

Casting an integer field containing desired rate to a pointer to bytes
works on little endian architectures where the driver is used, but not
a good practice. Use a temporary of proper type instead.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/input/mouse/cypress_ps2.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c
index c693130bef41..32b55b2b9b76 100644
--- a/drivers/input/mouse/cypress_ps2.c
+++ b/drivers/input/mouse/cypress_ps2.c
@@ -612,6 +612,7 @@ static psmouse_ret_t cypress_protocol_handler(struct psmouse *psmouse)
 static void cypress_set_rate(struct psmouse *psmouse, unsigned int rate)
 {
 	struct cytp_data *cytp = psmouse->private;
+	u8 rate_param;
 
 	if (rate >= 80) {
 		psmouse->rate = 80;
@@ -621,8 +622,8 @@ static void cypress_set_rate(struct psmouse *psmouse, unsigned int rate)
 		cytp->mode &= ~CYTP_BIT_HIGH_RATE;
 	}
 
-	ps2_command(&psmouse->ps2dev, (unsigned char *)&psmouse->rate,
-		    PSMOUSE_CMD_SETRATE);
+	rate_param = (u8)rate;
+	ps2_command(&psmouse->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
 }
 
 static void cypress_disconnect(struct psmouse *psmouse)
-- 
2.45.2.803.g4e1b14247a-goog