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drm/nouveau: make dp auxch xfer len check for reads only

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Writes don't return a count, and adding the check broke native DP.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-02-09 10:08:34 +10:00
parent e235c1f3e1
commit 1ee7698fc3
1 changed files with 5 additions and 5 deletions
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10
drivers/gpu/drm/nouveau/nouveau_dp.c
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@ -502,12 +502,12 @@ nouveau_dp_auxch(struct nouveau_i2c_chan *auxch, int cmd, int addr,
break;
}
if ((stat & NV50_AUXCH_STAT_COUNT) != data_nr) {
ret = -EREMOTEIO;
goto out;
}
if (cmd & 1) {
if ((stat & NV50_AUXCH_STAT_COUNT) != data_nr) {
ret = -EREMOTEIO;
goto out;
}
for (i = 0; i < 4; i++) {
data32[i] = nv_rd32(dev, NV50_AUXCH_DATA_IN(index, i));
NV_DEBUG_KMS(dev, "rd %d: 0x%08x\n", i, data32[i]);