From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guru Das Srinagesh Date: Thu, 19 Mar 2020 20:50:13 +0000 Subject: [PATCH v10 10/12] backlight: pwm_bl: Use 64-bit division function Message-Id: <3790b021beaa6b780636bfbcd47ca30f02eacef5.1584650604.git.gurus@codeaurora.org> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-pwm@vger.kernel.org Cc: Guru Das Srinagesh , Daniel Thompson , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Bartlomiej Zolnierkiewicz , Jingoo Han , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Thierry Reding , linux-fbdev@vger.kernel.org, Subbaraman Narayanamurthy , Lee Jones Since the PWM framework is switching struct pwm_state.period's datatype to u64, prepare for this transition by using div_u64 to handle a 64-bit dividend instead of a straight division operation. Cc: Lee Jones Cc: Daniel Thompson Cc: Jingoo Han Cc: Bartlomiej Zolnierkiewicz Cc: linux-pwm@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-fbdev@vger.kernel.org Signed-off-by: Guru Das Srinagesh --- drivers/video/backlight/pwm_bl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index efb4efc..3e5dbcf 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -625,7 +625,8 @@ static int pwm_backlight_probe(struct platform_device *pdev) pb->scale = data->max_brightness; } - pb->lth_brightness = data->lth_brightness * (state.period / pb->scale); + pb->lth_brightness = data->lth_brightness * (div_u64(state.period, + pb->scale)); props.type = BACKLIGHT_RAW; props.max_brightness = data->max_brightness; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project