From: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
To: Lucas Stach <l.stach@pengutronix.de>,
Philipp Zabel <p.zabel@pengutronix.de>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>
Cc: laurentiu.palcu@oss.nxp.com, dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] drm/imx/dcss: fix 64-bit divisions
Date: Fri, 11 Sep 2020 16:48:27 +0300 [thread overview]
Message-ID: <20200911134827.32142-1-laurentiu.palcu@oss.nxp.com> (raw)
Use div_s64() for the 64-bit divisions. This would allow the driver to compile
on 32-bit architectures, if needed.
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
---
drivers/gpu/drm/imx/dcss/dcss-scaler.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/imx/dcss/dcss-scaler.c b/drivers/gpu/drm/imx/dcss/dcss-scaler.c
index cd21905de580..7c1e0e461244 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-scaler.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-scaler.c
@@ -134,7 +134,7 @@ static int div_q(int A, int B)
else
temp -= B / 2;
- result = (int)(temp / B);
+ result = (int)(div_s64(temp, B));
return result;
}
@@ -237,7 +237,7 @@ static void dcss_scaler_gaussian_filter(int fc_q, bool use_5_taps,
ll_temp = coef[phase][i];
ll_temp <<= PSC_COEFF_PRECISION;
ll_temp += sum >> 1;
- ll_temp /= sum;
+ ll_temp = div_s64(ll_temp, sum);
coef[phase][i] = (int)ll_temp;
}
}
--
2.17.1
next reply other threads:[~2020-09-11 16:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-11 13:48 Laurentiu Palcu [this message]
2020-09-11 13:56 ` [PATCH] drm/imx/dcss: fix 64-bit divisions Ville Syrjälä
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