linux-kernel - [PATCH] pwm: raspberrypi-poe: Fix mailbox message initialization

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Message-Id: <20210409090819.24805-1-nsaenz@kernel.org>
Date:   Fri,  9 Apr 2021 11:08:19 +0200
From:   Nicolas Saenz Julienne <nsaenz@...nel.org>
To:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Lee Jones <lee.jones@...aro.org>,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Cc:     arnd@...db.de, Nicolas Saenz Julienne <nsaenz@...nel.org>,
        kernel test robot <lkp@...el.com>, linux-pwm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] pwm: raspberrypi-poe: Fix mailbox message initialization

For testing purposes this driver might be built on big-endian
architectures. So make sure we take that into account when populating
structures that are to be passed to RPi4's mailbox.

Reported-by: kernel test robot <lkp@...el.com>
Fixes: 79caa362eab6 ("pwm: Add Raspberry Pi Firmware based PWM bus")
Signed-off-by: Nicolas Saenz Julienne <nsaenz@...nel.org>
---

@arndb: This was just meged into the arm-soc tree some days ago. Should I
prepare a second PR once it's been reviewed?

 drivers/pwm/pwm-raspberrypi-poe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-raspberrypi-poe.c b/drivers/pwm/pwm-raspberrypi-poe.c
index 043fc32e8be8..78423e66f4fc 100644
--- a/drivers/pwm/pwm-raspberrypi-poe.c
+++ b/drivers/pwm/pwm-raspberrypi-poe.c
@@ -66,7 +66,7 @@ static int raspberrypi_pwm_get_property(struct rpi_firmware *firmware,
 					u32 reg, u32 *val)
 {
 	struct raspberrypi_pwm_prop msg = {
-		.reg = reg
+		.reg = cpu_to_le32(reg),
 	};
 	int ret;
 
-- 
2.30.2