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drm/nouveau/clk: Fix potential NULL pointer access when there is no fb subdev
Signed-off-by: Karol Herbst <karolherbst@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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cc90badd3c
1 changed files with 3 additions and 2 deletions
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@ -175,7 +175,7 @@ static int
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nvkm_pstate_prog(struct nvkm_clk *clk, int pstatei)
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{
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struct nvkm_subdev *subdev = &clk->subdev;
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struct nvkm_ram *ram = subdev->device->fb->ram;
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struct nvkm_fb *fb = subdev->device->fb;
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struct nvkm_pci *pci = subdev->device->pci;
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struct nvkm_pstate *pstate;
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int ret, idx = 0;
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@ -190,7 +190,8 @@ nvkm_pstate_prog(struct nvkm_clk *clk, int pstatei)
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nvkm_pcie_set_link(pci, pstate->pcie_speed, pstate->pcie_width);
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if (ram && ram->func->calc) {
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if (fb && fb->ram && fb->ram->func->calc) {
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struct nvkm_ram *ram = fb->ram;
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int khz = pstate->base.domain[nv_clk_src_mem];
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do {
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ret = ram->func->calc(ram, khz);
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