Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Fun set of conflict resolutions here...

For the mac80211 stuff, these were fortunately just parallel
adds.  Trivially resolved.

In drivers/net/phy/phy.c we had a bug fix in 'net' that moved the
function phy_disable_interrupts() earlier in the file, whilst in
'net-next' the phy_error() call from this function was removed.

In net/ipv4/xfrm4_policy.c, David Ahern's changes to remove the
'rt_table_id' member of rtable collided with a bug fix in 'net' that
added a new struct member "rt_mtu_locked" which needs to be copied
over here.

The mlxsw driver conflict consisted of net-next separating
the span code and definitions into separate files, whilst
a 'net' bug fix made some changes to that moved code.

The mlx5 infiniband conflict resolution was quite non-trivial,
the RDMA tree's merge commit was used as a guide here, and
here are their notes:

====================

    Due to bug fixes found by the syzkaller bot and taken into the for-rc
    branch after development for the 4.17 merge window had already started
    being taken into the for-next branch, there were fairly non-trivial
    merge issues that would need to be resolved between the for-rc branch
    and the for-next branch.  This merge resolves those conflicts and
    provides a unified base upon which ongoing development for 4.17 can
    be based.

    Conflicts:
            drivers/infiniband/hw/mlx5/main.c - Commit 42cea83f9524
            (IB/mlx5: Fix cleanup order on unload) added to for-rc and
            commit b5ca15ad7e61 (IB/mlx5: Add proper representors support)
            add as part of the devel cycle both needed to modify the
            init/de-init functions used by mlx5.  To support the new
            representors, the new functions added by the cleanup patch
            needed to be made non-static, and the init/de-init list
            added by the representors patch needed to be modified to
            match the init/de-init list changes made by the cleanup
            patch.
    Updates:
            drivers/infiniband/hw/mlx5/mlx5_ib.h - Update function
            prototypes added by representors patch to reflect new function
            names as changed by cleanup patch
            drivers/infiniband/hw/mlx5/ib_rep.c - Update init/de-init
            stage list to match new order from cleanup patch
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 27 deletions

diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 0be50e43507d..f8fe5ffcdcff 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -1303,9 +1303,8 @@ static void i915_oa_stream_destroy(struct i915_perf_stream *stream)
 	 */
 	mutex_lock(&dev_priv->drm.struct_mutex);
 	dev_priv->perf.oa.exclusive_stream = NULL;
-	mutex_unlock(&dev_priv->drm.struct_mutex);
-
 	dev_priv->perf.oa.ops.disable_metric_set(dev_priv);
+	mutex_unlock(&dev_priv->drm.struct_mutex);
 
 	free_oa_buffer(dev_priv);
 
@@ -1756,22 +1755,13 @@ static int gen8_switch_to_updated_kernel_context(struct drm_i915_private *dev_pr
  * Note: it's only the RCS/Render context that has any OA state.
  */
 static int gen8_configure_all_contexts(struct drm_i915_private *dev_priv,
-				       const struct i915_oa_config *oa_config,
-				       bool interruptible)
+				       const struct i915_oa_config *oa_config)
 {
 	struct i915_gem_context *ctx;
 	int ret;
 	unsigned int wait_flags = I915_WAIT_LOCKED;
 
-	if (interruptible) {
-		ret = i915_mutex_lock_interruptible(&dev_priv->drm);
-		if (ret)
-			return ret;
-
-		wait_flags |= I915_WAIT_INTERRUPTIBLE;
-	} else {
-		mutex_lock(&dev_priv->drm.struct_mutex);
-	}
+	lockdep_assert_held(&dev_priv->drm.struct_mutex);
 
 	/* Switch away from any user context. */
 	ret = gen8_switch_to_updated_kernel_context(dev_priv, oa_config);
@@ -1819,8 +1809,6 @@ static int gen8_configure_all_contexts(struct drm_i915_private *dev_priv,
 	}
 
  out:
-	mutex_unlock(&dev_priv->drm.struct_mutex);
-
 	return ret;
 }
 
@@ -1863,7 +1851,7 @@ static int gen8_enable_metric_set(struct drm_i915_private *dev_priv,
 	 * to make sure all slices/subslices are ON before writing to NOA
 	 * registers.
 	 */
-	ret = gen8_configure_all_contexts(dev_priv, oa_config, true);
+	ret = gen8_configure_all_contexts(dev_priv, oa_config);
 	if (ret)
 		return ret;
 
@@ -1878,7 +1866,7 @@ static int gen8_enable_metric_set(struct drm_i915_private *dev_priv,
 static void gen8_disable_metric_set(struct drm_i915_private *dev_priv)
 {
 	/* Reset all contexts' slices/subslices configurations. */
-	gen8_configure_all_contexts(dev_priv, NULL, false);
+	gen8_configure_all_contexts(dev_priv, NULL);
 
 	I915_WRITE(GDT_CHICKEN_BITS, (I915_READ(GDT_CHICKEN_BITS) &
 				      ~GT_NOA_ENABLE));
@@ -1888,7 +1876,7 @@ static void gen8_disable_metric_set(struct drm_i915_private *dev_priv)
 static void gen10_disable_metric_set(struct drm_i915_private *dev_priv)
 {
 	/* Reset all contexts' slices/subslices configurations. */
-	gen8_configure_all_contexts(dev_priv, NULL, false);
+	gen8_configure_all_contexts(dev_priv, NULL);
 
 	/* Make sure we disable noa to save power. */
 	I915_WRITE(RPM_CONFIG1,
@@ -2138,6 +2126,10 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
 	if (ret)
 		goto err_oa_buf_alloc;
 
+	ret = i915_mutex_lock_interruptible(&dev_priv->drm);
+	if (ret)
+		goto err_lock;
+
 	ret = dev_priv->perf.oa.ops.enable_metric_set(dev_priv,
 						      stream->oa_config);
 	if (ret)
@@ -2145,23 +2137,17 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
 
 	stream->ops = &i915_oa_stream_ops;
 
-	/* Lock device for exclusive_stream access late because
-	 * enable_metric_set() might lock as well on gen8+.
-	 */
-	ret = i915_mutex_lock_interruptible(&dev_priv->drm);
-	if (ret)
-		goto err_lock;
-
 	dev_priv->perf.oa.exclusive_stream = stream;
 
 	mutex_unlock(&dev_priv->drm.struct_mutex);
 
 	return 0;
 
-err_lock:
+err_enable:
 	dev_priv->perf.oa.ops.disable_metric_set(dev_priv);
+	mutex_unlock(&dev_priv->drm.struct_mutex);
 
-err_enable:
+err_lock:
 	free_oa_buffer(dev_priv);
 
 err_oa_buf_alloc: