diff options
| author | David S. Miller <davem@davemloft.net> | 2010-04-13 00:28:45 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-13 00:28:45 -0700 |
| commit | 9343af084c7e8911897b0883042ee690cee3aaef (patch) | |
| tree | 6211a4bdc84690bec6530d27a3abb19f5e8bb8f3 /drivers/gpu/drm/nouveau/nouveau_dp.c | |
| parent | e182c77cc291456eed127b1472952ddb59a81a9d (diff) | |
| parent | 0d0fb0f9c5fddef4a10242fe3337f00f528a3099 (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
lib/Kconfig.debug
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_dp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_dp.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c index f954ad93e81f..deeb21c6865c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dp.c +++ b/drivers/gpu/drm/nouveau/nouveau_dp.c @@ -483,7 +483,7 @@ nouveau_dp_auxch(struct nouveau_i2c_chan *auxch, int cmd, int addr, ctrl |= (cmd << NV50_AUXCH_CTRL_CMD_SHIFT); ctrl |= ((data_nr - 1) << NV50_AUXCH_CTRL_LEN_SHIFT); - for (;;) { + for (i = 0; i < 16; i++) { nv_wr32(dev, NV50_AUXCH_CTRL(index), ctrl | 0x80000000); nv_wr32(dev, NV50_AUXCH_CTRL(index), ctrl); nv_wr32(dev, NV50_AUXCH_CTRL(index), ctrl | 0x00010000); @@ -502,6 +502,12 @@ nouveau_dp_auxch(struct nouveau_i2c_chan *auxch, int cmd, int addr, break; } + if (i == 16) { + NV_ERROR(dev, "auxch DEFER too many times, bailing\n"); + ret = -EREMOTEIO; + goto out; + } + if (cmd & 1) { if ((stat & NV50_AUXCH_STAT_COUNT) != data_nr) { ret = -EREMOTEIO; |