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Commit 321c258e authored by Alexandre Courbot's avatar Alexandre Courbot Committed by Ben Skeggs
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drm/nouveau/volt: use kernel's 64-bit signed division function 



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: default avatarAlexandre Courbot <acourbot@nvidia.com>
Reviewed-by: default avatarKarol Herbst <karolherbst@gmail.com>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent d6c6035a

drivers/gpu/drm/nouveau/nvkm/subdev/volt/base.c

+3 −3
Original line number Diff line number Diff line
@@ -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! */