Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "This is probably a bit big, but just because I fell behind last week
  and didn't get to doing any pulls, so stuff backed up behind me, I
  actually should have sent this for -rc3 but failed to even manage
  that.

  So this has radeon, intel, nouveau, vmware, exynos and tegra fixes in
  it, and the line count isn't all the bad in the end"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (50 commits)
  drm: fix the addition of the side-by-side (half) flag for extra 3D modes
  drm/edid: fix length check when adding extra 3D modes
  drm/radeon/atom: fix bus probes when hw_i2c is set (v2)
  drm/radeon: fix null pointer dereference in dce6+ audio code
  drm/radeon: fixup bad vram size on SI
  udl: fix issue with imported prime buffers
  drm/vmwgfx: Add our connectors to sysfs
  drm/vmwgfx: Fix dma buffer memory size accounting
  drm/vmwgfx: Fix up and comment the dumb buffer implementation
  drm/vmwgfx: Correctly set the enabled state on crtcs
  drm/nv50/disp: min/max are reversed in nv50_crtc_gamma_set()
  drm/nouveau/sw: fix oops if gpu has its display block disabled
  drm/nouveau: unreference fence after syncing
  drm/nouveau/kms: send timestamp data for correct head in flip completion events
  drm/nouveau/clk: Add support for NVAA/NVAC
  drm/nouveau/fifo: Hook up pause and resume for NV50 and NV84+
  drm/nv10/plane: some chipsets don't support NV12
  drm/nv10/plane: add downscaling restrictions
  drm/nv10/plane: fix format computation
  drm/nv04-nv30/clk: provide an empty domain list
  ...

1 files changed, 9 insertions, 6 deletions

diff --git a/drivers/gpu/drm/radeon/atombios_i2c.c b/drivers/gpu/drm/radeon/atombios_i2c.c
index 0652ee0a209..f685035dbe3 100644
--- a/drivers/gpu/drm/radeon/atombios_i2c.c
+++ b/drivers/gpu/drm/radeon/atombios_i2c.c
@@ -44,7 +44,7 @@ static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan,
 	PROCESS_I2C_CHANNEL_TRANSACTION_PS_ALLOCATION args;
 	int index = GetIndexIntoMasterTable(COMMAND, ProcessI2cChannelTransaction);
 	unsigned char *base;
-	u16 out;
+	u16 out = cpu_to_le16(0);
 
 	memset(&args, 0, sizeof(args));
 
@@ -55,11 +55,14 @@ static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan,
 			DRM_ERROR("hw i2c: tried to write too many bytes (%d vs 3)\n", num);
 			return -EINVAL;
 		}
-		args.ucRegIndex = buf[0];
-		if (num > 1) {
+		if (buf == NULL)
+			args.ucRegIndex = 0;
+		else
+			args.ucRegIndex = buf[0];
+		if (num)
 			num--;
+		if (num)
 			memcpy(&out, &buf[1], num);
-		}
 		args.lpI2CDataOut = cpu_to_le16(out);
 	} else {
 		if (num > ATOM_MAX_HW_I2C_READ) {
@@ -96,14 +99,14 @@ int radeon_atom_hw_i2c_xfer(struct i2c_adapter *i2c_adap,
 	struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap);
 	struct i2c_msg *p;
 	int i, remaining, current_count, buffer_offset, max_bytes, ret;
-	u8 buf = 0, flags;
+	u8 flags;
 
 	/* check for bus probe */
 	p = &msgs[0];
 	if ((num == 1) && (p->len == 0)) {
 		ret = radeon_process_i2c_ch(i2c,
 					    p->addr, HW_I2C_WRITE,
-					    &buf, 1);
+					    NULL, 0);
 		if (ret)
 			return ret;
 		else