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drm/nouveau/volt: use kernel's 64-bit signed division function

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Doing direct 64 bit divisions in kernel code leads to references to
undefined symbols on 32 bit architectures. Replace such divisions with
calls to div64_s64 to make the module usable on 32 bit archs.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Karol Herbst <karolherbst@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Alexandre Courbot 2016-09-16 18:09:12 +09:00 committed by Ben Skeggs
parent d6c6035af7
commit 321c258e91
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/nouveau/nvkm/subdev/volt/base.c
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@ -116,9 +116,9 @@ nvkm_volt_map(struct nvkm_volt *volt, u8 id, u8 temp)
return volt->speedo;
if (ver == 0x10 || (ver == 0x20 && info.mode == 0)) {
result = (s64)info.arg[0] / 10;
result += ((s64)info.arg[1] * volt->speedo) / 10;
result += ((s64)info.arg[2] * volt->speedo * volt->speedo) / 100000;
result = div64_s64((s64)info.arg[0], 10);
result += div64_s64((s64)info.arg[1] * volt->speedo, 10);
result += div64_s64((s64)info.arg[2] * volt->speedo * volt->speedo, 100000);
} else if (ver == 0x20) {
switch (info.mode) {
/* 0x0 handled above! */