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Code Issues Releases Wiki Activity

drm/nouveau: fix thinko in volt 0x1x parsing

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-09-20 10:38:30 +10:00
parent e49f70f775
commit dc7339df11
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/nouveau/nouveau_volt.c
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@ -110,7 +110,7 @@ nouveau_volt_init(struct drm_device *dev)
struct nvbios *bios = &dev_priv->vbios;
struct bit_entry P;
u8 *volt = NULL, *entry;
int i, recordlen, entries, vidmask, vidshift;
int i, headerlen, recordlen, entries, vidmask, vidshift;
if (bios->type == NVBIOS_BIT) {
if (bit_table(dev, 'P', &P))
@ -142,18 +142,21 @@ nouveau_volt_init(struct drm_device *dev)
case 0x10:
case 0x11:
case 0x12:
recordlen = 5;
headerlen = 5;
recordlen = volt[1];
entries = volt[2];
vidshift = 0;
vidmask = volt[4];
break;
case 0x20:
headerlen = volt[1];
recordlen = volt[3];
entries = volt[2];
vidshift = 0; /* could be vidshift like 0x30? */
vidmask = volt[5];
break;
case 0x30:
headerlen = volt[1];
recordlen = volt[2];
entries = volt[3];
vidshift = hweight8(volt[5]);
@ -190,7 +193,7 @@ nouveau_volt_init(struct drm_device *dev)
if (!voltage->level)
return;
entry = volt + volt[1];
entry = volt + headerlen;
for (i = 0; i < entries; i++, entry += recordlen) {
voltage->level[i].voltage = entry[0];
voltage->level[i].vid = entry[1] >> vidshift;