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From: Arnd Bergmann <arnd@kernel.org>
To: Andrzej Hajda <andrzej.hajda@intel.com>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Robert Foss <rfoss@kernel.org>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
	Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
	Prahlad Valluru <vvalluru@qti.qualcomm.com>,
	Vishnu Saini <vishnu.saini@oss.qualcomm.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Jonas Karlman <jonas@kwiboo.se>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: [PATCH] drm/bridge: lt8713sx: avoid 64-bit division
Date: Mon, 16 Mar 2026 22:56:32 +0100	[thread overview]
Message-ID: <20260316215920.1993390-1-arnd@kernel.org> (raw)

From: Arnd Bergmann <arnd@arndb.de>

On 32-bit kernels, 64-bit integers cannot be passed to the division operator:

ld.lld-22: error: undefined symbol: __aeabi_uldivmod
>>> referenced by lontium-lt8713sx.c
>>>               drivers/gpu/drm/bridge/lontium-lt8713sx.o:(lt8713sx_firmware_store) in archive vmlinux.a

Since this is a constant number used to divide a size_t, just change the type
to that as well.

Fixes: 4037c6adc1f9 ("drm/bridge: add support for lontium lt8713sx bridge driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/gpu/drm/bridge/lontium-lt8713sx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt8713sx.c b/drivers/gpu/drm/bridge/lontium-lt8713sx.c
index a8ae38c84719..18fac6a46db4 100644
--- a/drivers/gpu/drm/bridge/lontium-lt8713sx.c
+++ b/drivers/gpu/drm/bridge/lontium-lt8713sx.c
@@ -100,7 +100,7 @@ static void lt8713sx_i2c_disable(struct lt8713sx *lt8713sx)
 static int lt8713sx_prepare_firmware_data(struct lt8713sx *lt8713sx)
 {
 	int ret = 0;
-	u64 sz_12k = 12 * SZ_1K;
+	size_t sz_12k = 12 * SZ_1K;
 
 	ret = request_firmware(&lt8713sx->fw, FW_FILE, lt8713sx->dev);
 	if (ret < 0) {
-- 
2.39.5


             reply	other threads:[~2026-03-16 21:59 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-16 21:56 Arnd Bergmann [this message]
2026-03-25  2:21 ` [PATCH] drm/bridge: lt8713sx: avoid 64-bit division Dmitry Baryshkov
2026-03-25  2:31 ` Dmitry Baryshkov

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