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

Fix merge between commit 3adadc08cc1e ("net ax25: Reorder ax25_exit to
remove races") and commit 0ca7a4c87d27 ("net ax25: Simplify and
cleanup the ax25 sysctl handling")

The former moved around the sysctl register/unregister calls, the
later simply removed them.

With help from Stephen Rothwell.

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

20 files changed, 64 insertions, 42 deletions

diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index 30372f7..348b367 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -1510,8 +1510,8 @@ int drm_freebufs(struct drm_device *dev, void *data,
  * \param arg pointer to a drm_buf_map structure.
  * \return zero on success or a negative number on failure.
  *
- * Maps the AGP, SG or PCI buffer region with do_mmap(), and copies information
- * about each buffer into user space. For PCI buffers, it calls do_mmap() with
+ * Maps the AGP, SG or PCI buffer region with vm_mmap(), and copies information
+ * about each buffer into user space. For PCI buffers, it calls vm_mmap() with
  * offset equal to 0, which drm_mmap() interpretes as PCI buffers and calls
  * drm_mmap_dma().
  */
@@ -1553,18 +1553,14 @@ int drm_mapbufs(struct drm_device *dev, void *data,
 				retcode = -EINVAL;
 				goto done;
 			}
-			down_write(&current->mm->mmap_sem);
-			virtual = do_mmap(file_priv->filp, 0, map->size,
+			virtual = vm_mmap(file_priv->filp, 0, map->size,
 					  PROT_READ | PROT_WRITE,
 					  MAP_SHARED,
 					  token);
-			up_write(&current->mm->mmap_sem);
 		} else {
-			down_write(&current->mm->mmap_sem);
-			virtual = do_mmap(file_priv->filp, 0, dma->byte_count,
+			virtual = vm_mmap(file_priv->filp, 0, dma->byte_count,
 					  PROT_READ | PROT_WRITE,
 					  MAP_SHARED, 0);
-			up_write(&current->mm->mmap_sem);
 		}
 		if (virtual > -1024UL) {
 			/* Real error */
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index d3aaeb6..c79870a 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -3335,10 +3335,12 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 
 	ret = crtc->funcs->page_flip(crtc, fb, e);
 	if (ret) {
-		spin_lock_irqsave(&dev->event_lock, flags);
-		file_priv->event_space += sizeof e->event;
-		spin_unlock_irqrestore(&dev->event_lock, flags);
-		kfree(e);
+		if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
+			spin_lock_irqsave(&dev->event_lock, flags);
+			file_priv->event_space += sizeof e->event;
+			spin_unlock_irqrestore(&dev->event_lock, flags);
+			kfree(e);
+		}
 	}
 
 out:
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index cdfbf27..123de28 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -507,12 +507,12 @@ int drm_release(struct inode *inode, struct file *filp)
 
 	drm_events_release(file_priv);
 
-	if (dev->driver->driver_features & DRIVER_GEM)
-		drm_gem_release(dev, file_priv);
-
 	if (dev->driver->driver_features & DRIVER_MODESET)
 		drm_fb_release(file_priv);
 
+	if (dev->driver->driver_features & DRIVER_GEM)
+		drm_gem_release(dev, file_priv);
+
 	mutex_lock(&dev->ctxlist_mutex);
 	if (!list_empty(&dev->ctxlist)) {
 		struct drm_ctx_list *pos, *n;
diff --git a/drivers/gpu/drm/drm_usb.c b/drivers/gpu/drm/drm_usb.c
index c8c83da..37c9a52 100644
--- a/drivers/gpu/drm/drm_usb.c
+++ b/drivers/gpu/drm/drm_usb.c
@@ -1,6 +1,6 @@
 #include "drmP.h"
 #include <linux/usb.h>
-#include <linux/export.h>
+#include <linux/module.h>
 
 int drm_get_usb_dev(struct usb_interface *interface,
 		    const struct usb_device_id *id,
@@ -114,3 +114,7 @@ void drm_usb_exit(struct drm_driver *driver,
 	usb_deregister(udriver);
 }
 EXPORT_SYMBOL(drm_usb_exit);
+
+MODULE_AUTHOR("David Airlie");
+MODULE_DESCRIPTION("USB DRM support");
+MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 26d5197..392ce71 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -581,10 +581,8 @@ int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data,
 	obj->filp->f_op = &exynos_drm_gem_fops;
 	obj->filp->private_data = obj;
 
-	down_write(&current->mm->mmap_sem);
-	addr = do_mmap(obj->filp, 0, args->size,
+	addr = vm_mmap(obj->filp, 0, args->size,
 			PROT_READ | PROT_WRITE, MAP_SHARED, 0);
-	up_write(&current->mm->mmap_sem);
 
 	drm_gem_object_unreference_unlocked(obj);
 
diff --git a/drivers/gpu/drm/gma500/mdfld_dsi_output.h b/drivers/gpu/drm/gma500/mdfld_dsi_output.h
index 21071ce..36eb074 100644
--- a/drivers/gpu/drm/gma500/mdfld_dsi_output.h
+++ b/drivers/gpu/drm/gma500/mdfld_dsi_output.h
@@ -29,7 +29,6 @@
 #define __MDFLD_DSI_OUTPUT_H__
 
 #include <linux/backlight.h>
-#include <linux/version.h>
 #include <drm/drmP.h>
 #include <drm/drm.h>
 #include <drm/drm_crtc.h>
diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c
index 2c8a60c..f920fb5 100644
--- a/drivers/gpu/drm/i810/i810_dma.c
+++ b/drivers/gpu/drm/i810/i810_dma.c
@@ -129,6 +129,7 @@ static int i810_map_buffer(struct drm_buf *buf, struct drm_file *file_priv)
 	if (buf_priv->currently_mapped == I810_BUF_MAPPED)
 		return -EINVAL;
 
+	/* This is all entirely broken */
 	down_write(&current->mm->mmap_sem);
 	old_fops = file_priv->filp->f_op;
 	file_priv->filp->f_op = &i810_buffer_fops;
@@ -157,11 +158,8 @@ static int i810_unmap_buffer(struct drm_buf *buf)
 	if (buf_priv->currently_mapped != I810_BUF_MAPPED)
 		return -EINVAL;
 
-	down_write(&current->mm->mmap_sem);
-	retcode = do_munmap(current->mm,
-			    (unsigned long)buf_priv->virtual,
+	retcode = vm_munmap((unsigned long)buf_priv->virtual,
 			    (size_t) buf->total);
-	up_write(&current->mm->mmap_sem);
 
 	buf_priv->currently_mapped = I810_BUF_UNMAPPED;
 	buf_priv->virtual = NULL;
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 0e3c6ac..0d1e4b7 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1087,11 +1087,9 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
 	if (obj == NULL)
 		return -ENOENT;
 
-	down_write(&current->mm->mmap_sem);
-	addr = do_mmap(obj->filp, 0, args->size,
+	addr = vm_mmap(obj->filp, 0, args->size,
 		       PROT_READ | PROT_WRITE, MAP_SHARED,
 		       args->offset);
-	up_write(&current->mm->mmap_sem);
 	drm_gem_object_unreference_unlocked(obj);
 	if (IS_ERR((void *)addr))
 		return addr;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index bae38ac..5908cd5 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3478,8 +3478,11 @@ static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
 			return false;
 	}
 
-	/* All interlaced capable intel hw wants timings in frames. */
-	drm_mode_set_crtcinfo(adjusted_mode, 0);
+	/* All interlaced capable intel hw wants timings in frames. Note though
+	 * that intel_lvds_mode_fixup does some funny tricks with the crtc
+	 * timings, so we need to be careful not to clobber these.*/
+	if (!(adjusted_mode->private_flags & INTEL_MODE_CRTC_TIMINGS_SET))
+		drm_mode_set_crtcinfo(adjusted_mode, 0);
 
 	return true;
 }
@@ -7465,7 +7468,13 @@ static int intel_gen6_queue_flip(struct drm_device *dev,
 	OUT_RING(fb->pitches[0] | obj->tiling_mode);
 	OUT_RING(obj->gtt_offset);
 
-	pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
+	/* Contrary to the suggestions in the documentation,
+	 * "Enable Panel Fitter" does not seem to be required when page
+	 * flipping with a non-native mode, and worse causes a normal
+	 * modeset to fail.
+	 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
+	 */
+	pf = 0;
 	pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
 	OUT_RING(pf | pipesrc);
 	ADVANCE_LP_RING();
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 5a14149..715afa1 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -105,6 +105,10 @@
 #define INTEL_MODE_PIXEL_MULTIPLIER_SHIFT (0x0)
 #define INTEL_MODE_PIXEL_MULTIPLIER_MASK (0xf << INTEL_MODE_PIXEL_MULTIPLIER_SHIFT)
 #define INTEL_MODE_DP_FORCE_6BPC (0x10)
+/* This flag must be set by the encoder's mode_fixup if it changes the crtc
+ * timings in the mode to prevent the crtc fixup from overwriting them.
+ * Currently only lvds needs that. */
+#define INTEL_MODE_CRTC_TIMINGS_SET (0x20)
 
 static inline void
 intel_mode_set_pixel_multiplier(struct drm_display_mode *mode,
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index 19ecd78..6e9ee33 100644
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -279,6 +279,8 @@ void intel_fb_restore_mode(struct drm_device *dev)
 	struct drm_mode_config *config = &dev->mode_config;
 	struct drm_plane *plane;
 
+	mutex_lock(&dev->mode_config.mutex);
+
 	ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper);
 	if (ret)
 		DRM_DEBUG("failed to restore crtc mode\n");
@@ -286,4 +288,6 @@ void intel_fb_restore_mode(struct drm_device *dev)
 	/* Be sure to shut off any planes that may be active */
 	list_for_each_entry(plane, &config->plane_list, head)
 		plane->funcs->disable_plane(plane);
+
+	mutex_unlock(&dev->mode_config.mutex);
 }
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 95db2e9..30e2c82 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -187,6 +187,8 @@ centre_horizontally(struct drm_display_mode *mode,
 
 	mode->crtc_hsync_start = mode->crtc_hblank_start + sync_pos;
 	mode->crtc_hsync_end = mode->crtc_hsync_start + sync_width;
+
+	mode->private_flags |= INTEL_MODE_CRTC_TIMINGS_SET;
 }
 
 static void
@@ -208,6 +210,8 @@ centre_vertically(struct drm_display_mode *mode,
 
 	mode->crtc_vsync_start = mode->crtc_vblank_start + sync_pos;
 	mode->crtc_vsync_end = mode->crtc_vsync_start + sync_width;
+
+	mode->private_flags |= INTEL_MODE_CRTC_TIMINGS_SET;
 }
 
 static inline u32 panel_fitter_scaling(u32 source, u32 target)
@@ -283,6 +287,8 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
 	for_each_pipe(pipe)
 		I915_WRITE(BCLRPAT(pipe), 0);
 
+	drm_mode_set_crtcinfo(adjusted_mode, 0);
+
 	switch (intel_lvds->fitting_mode) {
 	case DRM_MODE_SCALE_CENTER:
 		/*
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 230a141..48177ec 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -47,8 +47,6 @@ intel_fixed_panel_mode(struct drm_display_mode *fixed_mode,
 	adjusted_mode->vtotal = fixed_mode->vtotal;
 
 	adjusted_mode->clock = fixed_mode->clock;
-
-	drm_mode_set_crtcinfo(adjusted_mode, 0);
 }
 
 /* adjusted_mode has been preset to be the panel's fixed mode */
diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c
index 34d591b..da3e7c3 100644
--- a/drivers/gpu/drm/nouveau/nouveau_pm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_pm.c
@@ -235,6 +235,7 @@ nouveau_pm_profile_set(struct drm_device *dev, const char *profile)
 		return -EPERM;
 
 	strncpy(string, profile, sizeof(string));
+	string[sizeof(string) - 1] = 0;
 	if ((ptr = strchr(string, '\n')))
 		*ptr = '\0';
 
diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c
index a7844ab..2746402 100644
--- a/drivers/gpu/drm/nouveau/nv50_sor.c
+++ b/drivers/gpu/drm/nouveau/nv50_sor.c
@@ -42,7 +42,7 @@ nv50_sor_dp_lane_map(struct drm_device *dev, struct dcb_entry *dcb, u8 lane)
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	static const u8 nvaf[] = { 24, 16, 8, 0 }; /* thanks, apple.. */
 	static const u8 nv50[] = { 16, 8, 0, 24 };
-	if (dev_priv->card_type == 0xaf)
+	if (dev_priv->chipset == 0xaf)
 		return nvaf[lane];
 	return nv50[lane];
 }
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index de71243..c8187c4 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1135,7 +1135,7 @@ static void r600_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc
 	}
 	if (rdev->flags & RADEON_IS_AGP) {
 		size_bf = mc->gtt_start;
-		size_af = 0xFFFFFFFF - mc->gtt_end + 1;
+		size_af = 0xFFFFFFFF - mc->gtt_end;
 		if (size_bf > size_af) {
 			if (mc->mc_vram_size > size_bf) {
 				dev_warn(rdev->dev, "limiting VRAM\n");
@@ -1149,7 +1149,7 @@ static void r600_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc
 				mc->real_vram_size = size_af;
 				mc->mc_vram_size = size_af;
 			}
-			mc->vram_start = mc->gtt_end;
+			mc->vram_start = mc->gtt_end + 1;
 		}
 		mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
 		dev_info(rdev->dev, "VRAM: %lluM 0x%08llX - 0x%08llX (%lluM used)\n",
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index bd05156..3c2e7a0 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -970,7 +970,7 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
 
 			encoder = obj_to_encoder(obj);
 
-			if (encoder->encoder_type != DRM_MODE_ENCODER_DAC ||
+			if (encoder->encoder_type != DRM_MODE_ENCODER_DAC &&
 			    encoder->encoder_type != DRM_MODE_ENCODER_TVDAC)
 				continue;
 
@@ -1000,6 +1000,7 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
 	 * cases the DVI port is actually a virtual KVM port connected to the service
 	 * processor.
 	 */
+out:
 	if ((!rdev->is_atom_bios) &&
 	    (ret == connector_status_disconnected) &&
 	    rdev->mode_info.bios_hardcoded_edid_size) {
@@ -1007,7 +1008,6 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
 		ret = connector_status_connected;
 	}
 
-out:
 	/* updated in get modes as well since we need to know if it's analog or digital */
 	radeon_connector_update_scratch_regs(connector, ret);
 	return ret;
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 66d5fe1..65060b7 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -147,6 +147,12 @@ static bool radeon_msi_ok(struct radeon_device *rdev)
 	    (rdev->pdev->subsystem_device == 0x01fd))
 		return true;
 
+	/* RV515 seems to have MSI issues where it loses
+	 * MSI rearms occasionally. This leads to lockups and freezes.
+	 * disable it by default.
+	 */
+	if (rdev->family == CHIP_RV515)
+		return false;
 	if (rdev->flags & RADEON_IS_IGP) {
 		/* APUs work fine with MSIs */
 		if (rdev->family >= CHIP_PALM)
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index c62ae4b..cdab1ae 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -969,7 +969,7 @@ void r700_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
 	}
 	if (rdev->flags & RADEON_IS_AGP) {
 		size_bf = mc->gtt_start;
-		size_af = 0xFFFFFFFF - mc->gtt_end + 1;
+		size_af = 0xFFFFFFFF - mc->gtt_end;
 		if (size_bf > size_af) {
 			if (mc->mc_vram_size > size_bf) {
 				dev_warn(rdev->dev, "limiting VRAM\n");
@@ -983,7 +983,7 @@ void r700_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
 				mc->real_vram_size = size_af;
 				mc->mc_vram_size = size_af;
 			}
-			mc->vram_start = mc->gtt_end;
+			mc->vram_start = mc->gtt_end + 1;
 		}
 		mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
 		dev_info(rdev->dev, "VRAM: %lluM 0x%08llX - 0x%08llX (%lluM used)\n",
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index ac7a199..27bda98 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -2999,8 +2999,8 @@ int si_rlc_init(struct radeon_device *rdev)
 	}
 	r = radeon_bo_pin(rdev->rlc.save_restore_obj, RADEON_GEM_DOMAIN_VRAM,
 			  &rdev->rlc.save_restore_gpu_addr);
+	radeon_bo_unreserve(rdev->rlc.save_restore_obj);
 	if (r) {
-		radeon_bo_unreserve(rdev->rlc.save_restore_obj);
 		dev_warn(rdev->dev, "(%d) pin RLC sr bo failed\n", r);
 		si_rlc_fini(rdev);
 		return r;
@@ -3023,9 +3023,8 @@ int si_rlc_init(struct radeon_device *rdev)
 	}
 	r = radeon_bo_pin(rdev->rlc.clear_state_obj, RADEON_GEM_DOMAIN_VRAM,
 			  &rdev->rlc.clear_state_gpu_addr);
+	radeon_bo_unreserve(rdev->rlc.clear_state_obj);
 	if (r) {
-
-		radeon_bo_unreserve(rdev->rlc.clear_state_obj);
 		dev_warn(rdev->dev, "(%d) pin RLC c bo failed\n", r);
 		si_rlc_fini(rdev);
 		return r;