[PATCH] media: venus: fix build on 32bit environments

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As reported by jenkins@xxxxxxxxxxx, the build with i386 fails
with:

	ld: drivers/media/platform/qcom/venus/helpers.o: in function `venus_helper_load_scale_clocks':
	(.text+0x1d77): undefined reference to `__udivdi3'
	ld: (.text+0x1dce): undefined reference to `__udivdi3'
	make: *** [Makefile:1094: vmlinux] Error 1

That's because it divides an u32 bit integer by a u64 one.

Fix it by explicitly callind do_div.

That's said, why fps is a 64 bits integer?

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
---
 drivers/media/platform/qcom/venus/helpers.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
index 5ea5d90f8e5f..09fa87e3c0a0 100644
--- a/drivers/media/platform/qcom/venus/helpers.c
+++ b/drivers/media/platform/qcom/venus/helpers.c
@@ -522,8 +522,14 @@ static unsigned long calculate_inst_freq(struct venus_inst *inst,
 	unsigned long vpp_freq = 0, vsp_freq = 0;
 	u64 fps = inst->fps;
 	u32 mbs_per_sec;
+	u64 tmp;
+
+
+	tmp = load_per_instance(inst);
+	do_div(tmp, inst->fps);
+
+	mbs_per_sec = (u32)tmp;
 
-	mbs_per_sec = load_per_instance(inst) / inst->fps;
 	vpp_freq = mbs_per_sec * inst->clk_data.codec_freq_data->vpp_freq;
 	/* 21 / 20 is overhead factor */
 	vpp_freq += vpp_freq / 20;
-- 
2.21.0




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