Merge branch 'cleanup-3.4' of git://github.com/hzhuang1/linux into next/cleanup

* 'cleanup-3.4' of git://github.com/hzhuang1/linux: (2 commits)
  rtc: sa1100: remove verification code of alarm
  rtc: sa1100: remove periodic code

(update to v3.3-rc5)

29 files changed, 233 insertions, 123 deletions

diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index ddd70db45f76..637fcc3766c7 100644
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -315,7 +315,8 @@ static int compat_drm_getclient(struct file *file, unsigned int cmd,
         if (err)
                 return err;
 
-        if (__get_user(c32.auth, &client->auth)
+        if (__get_user(c32.idx, &client->idx)
+            || __get_user(c32.auth, &client->auth)
             || __get_user(c32.pid, &client->pid)
             || __get_user(c32.uid, &client->uid)
             || __get_user(c32.magic, &client->magic)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_core.c b/drivers/gpu/drm/exynos/exynos_drm_core.c
index 661a03571d0c..d08a55896d50 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_core.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_core.c
@@ -193,6 +193,9 @@ int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv)
                         return err;
                 }
 
+                /* setup possible_clones. */
+                exynos_drm_encoder_setup(drm_dev);
+
                 /*
                  * if any specific driver such as fimd or hdmi driver called
                  * exynos_drm_subdrv_register() later than drm_load(),
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index e3861ac49295..de818831a511 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -307,9 +307,6 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
                  */
                 event->pipe = exynos_crtc->pipe;
 
-                list_add_tail(&event->base.link,
-                                &dev_priv->pageflip_event_list);
-
                 ret = drm_vblank_get(dev, exynos_crtc->pipe);
                 if (ret) {
                         DRM_DEBUG("failed to acquire vblank counter\n");
@@ -318,6 +315,9 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
                         goto out;
                 }
 
+                list_add_tail(&event->base.link,
+                                &dev_priv->pageflip_event_list);
+
                 crtc->fb = fb;
                 ret = exynos_drm_crtc_update(crtc);
                 if (ret) {
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 35889ca255e9..58820ebd3558 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -33,6 +33,7 @@
 
 #include "exynos_drm_drv.h"
 #include "exynos_drm_crtc.h"
+#include "exynos_drm_encoder.h"
 #include "exynos_drm_fbdev.h"
 #include "exynos_drm_fb.h"
 #include "exynos_drm_gem.h"
@@ -99,6 +100,9 @@ static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
         if (ret)
                 goto err_vblank;
 
+        /* setup possible_clones. */
+        exynos_drm_encoder_setup(dev);
+
         /*
          * create and configure fb helper and also exynos specific
          * fbdev object.
@@ -141,16 +145,21 @@ static int exynos_drm_unload(struct drm_device *dev)
 }
 
 static void exynos_drm_preclose(struct drm_device *dev,
-                                        struct drm_file *file_priv)
+                                        struct drm_file *file)
 {
-        struct exynos_drm_private *dev_priv = dev->dev_private;
+        DRM_DEBUG_DRIVER("%s\n", __FILE__);
 
-        /*
-         * drm framework frees all events at release time,
-         * so private event list should be cleared.
-         */
-        if (!list_empty(&dev_priv->pageflip_event_list))
-                INIT_LIST_HEAD(&dev_priv->pageflip_event_list);
+}
+
+static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
+{
+        DRM_DEBUG_DRIVER("%s\n", __FILE__);
+
+        if (!file->driver_priv)
+                return;
+
+        kfree(file->driver_priv);
+        file->driver_priv = NULL;
 }
 
 static void exynos_drm_lastclose(struct drm_device *dev)
@@ -195,6 +204,7 @@ static struct drm_driver exynos_drm_driver = {
         .unload                 = exynos_drm_unload,
         .preclose               = exynos_drm_preclose,
         .lastclose              = exynos_drm_lastclose,
+        .postclose              = exynos_drm_postclose,
         .get_vblank_counter     = drm_vblank_count,
         .enable_vblank          = exynos_drm_crtc_enable_vblank,
         .disable_vblank         = exynos_drm_crtc_disable_vblank,
diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
index 86b93dde219a..ef4754f1519b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_encoder.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
@@ -195,6 +195,40 @@ static struct drm_encoder_funcs exynos_encoder_funcs = {
         .destroy = exynos_drm_encoder_destroy,
 };
 
+static unsigned int exynos_drm_encoder_clones(struct drm_encoder *encoder)
+{
+        struct drm_encoder *clone;
+        struct drm_device *dev = encoder->dev;
+        struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
+        struct exynos_drm_display_ops *display_ops =
+                                exynos_encoder->manager->display_ops;
+        unsigned int clone_mask = 0;
+        int cnt = 0;
+
+        list_for_each_entry(clone, &dev->mode_config.encoder_list, head) {
+                switch (display_ops->type) {
+                case EXYNOS_DISPLAY_TYPE_LCD:
+                case EXYNOS_DISPLAY_TYPE_HDMI:
+                        clone_mask |= (1 << (cnt++));
+                        break;
+                default:
+                        continue;
+                }
+        }
+
+        return clone_mask;
+}
+
+void exynos_drm_encoder_setup(struct drm_device *dev)
+{
+        struct drm_encoder *encoder;
+
+        DRM_DEBUG_KMS("%s\n", __FILE__);
+
+        list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
+                encoder->possible_clones = exynos_drm_encoder_clones(encoder);
+}
+
 struct drm_encoder *
 exynos_drm_encoder_create(struct drm_device *dev,
                            struct exynos_drm_manager *manager,
diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.h b/drivers/gpu/drm/exynos/exynos_drm_encoder.h
index 97b087a51cb6..eb7d2316847e 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_encoder.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.h
@@ -30,6 +30,7 @@
 
 struct exynos_drm_manager;
 
+void exynos_drm_encoder_setup(struct drm_device *dev);
 struct drm_encoder *exynos_drm_encoder_create(struct drm_device *dev,
                                                struct exynos_drm_manager *mgr,
                                                unsigned int possible_crtcs);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index d7ae29d2f3d6..3508700e529b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -195,66 +195,6 @@ out:
         return ret;
 }
 
-static bool
-exynos_drm_fbdev_is_samefb(struct drm_framebuffer *fb,
-                            struct drm_fb_helper_surface_size *sizes)
-{
-        if (fb->width != sizes->surface_width)
-                return false;
-        if (fb->height != sizes->surface_height)
-                return false;
-        if (fb->bits_per_pixel != sizes->surface_bpp)
-                return false;
-        if (fb->depth != sizes->surface_depth)
-                return false;
-
-        return true;
-}
-
-static int exynos_drm_fbdev_recreate(struct drm_fb_helper *helper,
-                                      struct drm_fb_helper_surface_size *sizes)
-{
-        struct drm_device *dev = helper->dev;
-        struct exynos_drm_fbdev *exynos_fbdev = to_exynos_fbdev(helper);
-        struct exynos_drm_gem_obj *exynos_gem_obj;
-        struct drm_framebuffer *fb = helper->fb;
-        struct drm_mode_fb_cmd2 mode_cmd = { 0 };
-        unsigned long size;
-
-        DRM_DEBUG_KMS("%s\n", __FILE__);
-
-        if (exynos_drm_fbdev_is_samefb(fb, sizes))
-                return 0;
-
-        mode_cmd.width = sizes->surface_width;
-        mode_cmd.height = sizes->surface_height;
-        mode_cmd.pitches[0] = sizes->surface_width * (sizes->surface_bpp >> 3);
-        mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
-                                                          sizes->surface_depth);
-
-        if (exynos_fbdev->exynos_gem_obj)
-                exynos_drm_gem_destroy(exynos_fbdev->exynos_gem_obj);
-
-        if (fb->funcs->destroy)
-                fb->funcs->destroy(fb);
-
-        size = mode_cmd.pitches[0] * mode_cmd.height;
-        exynos_gem_obj = exynos_drm_gem_create(dev, size);
-        if (IS_ERR(exynos_gem_obj))
-                return PTR_ERR(exynos_gem_obj);
-
-        exynos_fbdev->exynos_gem_obj = exynos_gem_obj;
-
-        helper->fb = exynos_drm_framebuffer_init(dev, &mode_cmd,
-                        &exynos_gem_obj->base);
-        if (IS_ERR_OR_NULL(helper->fb)) {
-                DRM_ERROR("failed to create drm framebuffer.\n");
-                return PTR_ERR(helper->fb);
-        }
-
-        return exynos_drm_fbdev_update(helper, helper->fb);
-}
-
 static int exynos_drm_fbdev_probe(struct drm_fb_helper *helper,
                                    struct drm_fb_helper_surface_size *sizes)
 {
@@ -262,6 +202,10 @@ static int exynos_drm_fbdev_probe(struct drm_fb_helper *helper,
 
         DRM_DEBUG_KMS("%s\n", __FILE__);
 
+        /*
+         * with !helper->fb, it means that this funcion is called first time
+         * and after that, the helper->fb would be used as clone mode.
+         */
         if (!helper->fb) {
                 ret = exynos_drm_fbdev_create(helper, sizes);
                 if (ret < 0) {
@@ -274,12 +218,6 @@ static int exynos_drm_fbdev_probe(struct drm_fb_helper *helper,
                  * because register_framebuffer() should be called.
                  */
                 ret = 1;
-        } else {
-                ret = exynos_drm_fbdev_recreate(helper, sizes);
-                if (ret < 0) {
-                        DRM_ERROR("failed to reconfigure fbdev\n");
-                        return ret;
-                }
         }
 
         return ret;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index b6a737d196ae..0dbb32bb18a3 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -604,7 +604,12 @@ static void fimd_finish_pageflip(struct drm_device *drm_dev, int crtc)
         }
 
         if (is_checked) {
-                drm_vblank_put(drm_dev, crtc);
+                /*
+                 * call drm_vblank_put only in case that drm_vblank_get was
+                 * called.
+                 */
+                if (atomic_read(&drm_dev->vblank_refcount[crtc]) > 0)
+                        drm_vblank_put(drm_dev, crtc);
 
                 /*
                  * don't off vblank if vblank_disable_allowed is 1,
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index ac24cff39775..93846e810e38 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -712,7 +712,12 @@ static void mixer_finish_pageflip(struct drm_device *drm_dev, int crtc)
         }
 
         if (is_checked)
-                drm_vblank_put(drm_dev, crtc);
+                /*
+                 * call drm_vblank_put only in case that drm_vblank_get was
+                 * called.
+                 */
+                if (atomic_read(&drm_dev->vblank_refcount[crtc]) > 0)
+                        drm_vblank_put(drm_dev, crtc);
 
         spin_unlock_irqrestore(&drm_dev->event_lock, flags);
 }
@@ -779,15 +784,15 @@ static void mixer_win_reset(struct mixer_context *ctx)
         mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST,
                 MXR_STATUS_BURST_MASK);
 
-        /* setting default layer priority: layer1 > video > layer0
+        /* setting default layer priority: layer1 > layer0 > video
          * because typical usage scenario would be
+         * layer1 - OSD
          * layer0 - framebuffer
          * video - video overlay
-         * layer1 - OSD
          */
-        val  = MXR_LAYER_CFG_GRP0_VAL(1);
-        val |= MXR_LAYER_CFG_VP_VAL(2);
-        val |= MXR_LAYER_CFG_GRP1_VAL(3);
+        val = MXR_LAYER_CFG_GRP1_VAL(3);
+        val |= MXR_LAYER_CFG_GRP0_VAL(2);
+        val |= MXR_LAYER_CFG_VP_VAL(1);
         mixer_reg_write(res, MXR_LAYER_CFG, val);
 
         /* setting background color */
@@ -1044,7 +1049,7 @@ static int mixer_remove(struct platform_device *pdev)
                                         platform_get_drvdata(pdev);
         struct mixer_context *ctx = (struct mixer_context *)drm_hdmi_ctx->ctx;
 
-        dev_info(dev, "remove sucessful\n");
+        dev_info(dev, "remove successful\n");
 
         mixer_resource_poweroff(ctx);
         mixer_resources_cleanup(ctx);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c3afb783cb9d..03c53fcf8653 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3028,6 +3028,20 @@
 #define  DISP_TILE_SURFACE_SWIZZLING    (1<<13)
 #define  DISP_FBC_WM_DIS                (1<<15)
 
+/* GEN7 chicken */
+#define GEN7_COMMON_SLICE_CHICKEN1              0x7010
+# define GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC      ((1<<10) | (1<<26))
+
+#define GEN7_L3CNTLREG1                         0xB01C
+#define  GEN7_WA_FOR_GEN7_L3_CONTROL                    0x3C4FFF8C
+
+#define GEN7_L3_CHICKEN_MODE_REGISTER           0xB030
+#define  GEN7_WA_L3_CHICKEN_MODE                                0x20000000
+
+/* WaCatErrorRejectionIssue */
+#define GEN7_SQ_CHICKEN_MBCUNIT_CONFIG          0x9030
+#define  GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB       (1<<11)
+
 /* PCH */
 
 /* south display engine interrupt */
@@ -3618,6 +3632,7 @@
 #define    GT_FIFO_NUM_RESERVED_ENTRIES         20
 
 #define GEN6_UCGCTL2                            0x9404
+# define GEN6_RCZUNIT_CLOCK_GATE_DISABLE                (1 << 13)
 # define GEN6_RCPBUNIT_CLOCK_GATE_DISABLE               (1 << 12)
 # define GEN6_RCCUNIT_CLOCK_GATE_DISABLE                (1 << 11)
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b3b51c43dad0..f425b23e3803 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1872,7 +1872,7 @@ static void intel_update_fbc(struct drm_device *dev)
         if (enable_fbc < 0) {
                 DRM_DEBUG_KMS("fbc set to per-chip default\n");
                 enable_fbc = 1;
-                if (INTEL_INFO(dev)->gen <= 5)
+                if (INTEL_INFO(dev)->gen <= 6)
                         enable_fbc = 0;
         }
         if (!enable_fbc) {
@@ -5307,6 +5307,7 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
                 }
         }
 
+        pipeconf &= ~PIPECONF_INTERLACE_MASK;
         if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
                 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
                 /* the chip adds 2 halflines automatically */
@@ -5317,7 +5318,7 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
                 adjusted_mode->crtc_vsync_end -= 1;
                 adjusted_mode->crtc_vsync_start -= 1;
         } else
-                pipeconf &= ~PIPECONF_INTERLACE_MASK; /* progressive */
+                pipeconf |= PIPECONF_PROGRESSIVE;
 
         I915_WRITE(HTOTAL(pipe),
                    (adjusted_mode->crtc_hdisplay - 1) |
@@ -5902,6 +5903,7 @@ static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
                 }
         }
 
+        pipeconf &= ~PIPECONF_INTERLACE_MASK;
         if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
                 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
                 /* the chip adds 2 halflines automatically */
@@ -5912,7 +5914,7 @@ static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
                 adjusted_mode->crtc_vsync_end -= 1;
                 adjusted_mode->crtc_vsync_start -= 1;
         } else
-                pipeconf &= ~PIPECONF_INTERLACE_W_FIELD_INDICATION; /* progressive */
+                pipeconf |= PIPECONF_PROGRESSIVE;
 
         I915_WRITE(HTOTAL(pipe),
                    (adjusted_mode->crtc_hdisplay - 1) |
@@ -8182,8 +8184,8 @@ void gen6_enable_rps(struct drm_i915_private *dev_priv)
         I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
 
         if (intel_enable_rc6(dev_priv->dev))
-                rc6_mask = GEN6_RC_CTL_RC6p_ENABLE |
-                        GEN6_RC_CTL_RC6_ENABLE;
+                rc6_mask = GEN6_RC_CTL_RC6_ENABLE |
+                        (IS_GEN7(dev_priv->dev)) ? GEN6_RC_CTL_RC6p_ENABLE : 0;
 
         I915_WRITE(GEN6_RC_CONTROL,
                    rc6_mask |
@@ -8461,12 +8463,32 @@ static void ivybridge_init_clock_gating(struct drm_device *dev)
         I915_WRITE(WM2_LP_ILK, 0);
         I915_WRITE(WM1_LP_ILK, 0);
 
+        /* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
+         * This implements the WaDisableRCZUnitClockGating workaround.
+         */
+        I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
+
         I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
 
         I915_WRITE(IVB_CHICKEN3,
                    CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
                    CHICKEN3_DGMG_DONE_FIX_DISABLE);
 
+        /* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
+        I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
+                   GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);
+
+        /* WaApplyL3ControlAndL3ChickenMode requires those two on Ivy Bridge */
+        I915_WRITE(GEN7_L3CNTLREG1,
+                        GEN7_WA_FOR_GEN7_L3_CONTROL);
+        I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER,
+                        GEN7_WA_L3_CHICKEN_MODE);
+
+        /* This is required by WaCatErrorRejectionIssue */
+        I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
+                        I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
+                        GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
+
         for_each_pipe(pipe) {
                 I915_WRITE(DSPCNTR(pipe),
                            I915_READ(DSPCNTR(pipe)) |
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index db3b461ad412..94f860cce3f7 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -208,17 +208,8 @@ intel_dp_link_clock(uint8_t link_bw)
  */
 
 static int
-intel_dp_link_required(struct intel_dp *intel_dp, int pixel_clock, int check_bpp)
+intel_dp_link_required(int pixel_clock, int bpp)
 {
-        struct drm_crtc *crtc = intel_dp->base.base.crtc;
-        struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-        int bpp = 24;
-
-        if (check_bpp)
-                bpp = check_bpp;
-        else if (intel_crtc)
-                bpp = intel_crtc->bpp;
-
         return (pixel_clock * bpp + 9) / 10;
 }
 
@@ -245,12 +236,11 @@ intel_dp_mode_valid(struct drm_connector *connector,
                         return MODE_PANEL;
         }
 
-        mode_rate = intel_dp_link_required(intel_dp, mode->clock, 0);
+        mode_rate = intel_dp_link_required(mode->clock, 24);
         max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes);
 
         if (mode_rate > max_rate) {
-                        mode_rate = intel_dp_link_required(intel_dp,
-                                                           mode->clock, 18);
+                        mode_rate = intel_dp_link_required(mode->clock, 18);
                         if (mode_rate > max_rate)
                                 return MODE_CLOCK_HIGH;
                         else
@@ -683,7 +673,7 @@ intel_dp_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
         int lane_count, clock;
         int max_lane_count = intel_dp_max_lane_count(intel_dp);
         int max_clock = intel_dp_max_link_bw(intel_dp) == DP_LINK_BW_2_7 ? 1 : 0;
-        int bpp = mode->private_flags & INTEL_MODE_DP_FORCE_6BPC ? 18 : 0;
+        int bpp = mode->private_flags & INTEL_MODE_DP_FORCE_6BPC ? 18 : 24;
         static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 };
 
         if (is_edp(intel_dp) && intel_dp->panel_fixed_mode) {
@@ -701,7 +691,7 @@ intel_dp_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
                 for (clock = 0; clock <= max_clock; clock++) {
                         int link_avail = intel_dp_max_data_rate(intel_dp_link_clock(bws[clock]), lane_count);
 
-                        if (intel_dp_link_required(intel_dp, mode->clock, bpp)
+                        if (intel_dp_link_required(mode->clock, bpp)
                                         <= link_avail) {
                                 intel_dp->link_bw = bws[clock];
                                 intel_dp->lane_count = lane_count;
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 798f6e1aa544..aa84832b0e1a 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -694,6 +694,14 @@ static const struct dmi_system_id intel_no_lvds[] = {
         },
         {
                 .callback = intel_no_lvds_dmi_callback,
+                .ident = "AOpen i45GMx-I",
+                .matches = {
+                        DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
+                        DMI_MATCH(DMI_BOARD_NAME, "i45GMx-I"),
+                },
+        },
+        {
+                .callback = intel_no_lvds_dmi_callback,
                 .ident = "Aopen i945GTt-VFA",
                 .matches = {
                         DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW"),
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index ae09fe82afbc..f58254a3fb01 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -3191,6 +3191,7 @@ static int evergreen_startup(struct radeon_device *rdev)
         if (r) {
                 DRM_ERROR("radeon: failed testing IB (%d).\n", r);
                 rdev->accel_working = false;
+                return r;
         }
 
         r = r600_audio_init(rdev);
@@ -3222,6 +3223,7 @@ int evergreen_resume(struct radeon_device *rdev)
         r = evergreen_startup(rdev);
         if (r) {
                 DRM_ERROR("evergreen startup failed on resume\n");
+                rdev->accel_working = false;
                 return r;
         }
 
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index db09065e68fd..2509c505acb8 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1547,6 +1547,7 @@ int cayman_resume(struct radeon_device *rdev)
         r = cayman_startup(rdev);
         if (r) {
                 DRM_ERROR("cayman startup failed on resume\n");
+                rdev->accel_working = false;
                 return r;
         }
         return r;
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index bfd36ab643a6..333cde9d4e7b 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -789,9 +789,7 @@ int r100_irq_process(struct radeon_device *rdev)
                         WREG32(RADEON_AIC_CNTL, msi_rearm | RS400_MSI_REARM);
                         break;
                 default:
-                        msi_rearm = RREG32(RADEON_MSI_REARM_EN) & ~RV370_MSI_REARM_EN;
-                        WREG32(RADEON_MSI_REARM_EN, msi_rearm);
-                        WREG32(RADEON_MSI_REARM_EN, msi_rearm | RV370_MSI_REARM_EN);
+                        WREG32(RADEON_MSI_REARM_EN, RV370_MSI_REARM_EN);
                         break;
                 }
         }
@@ -3930,6 +3928,8 @@ static int r100_startup(struct radeon_device *rdev)
 
 int r100_resume(struct radeon_device *rdev)
 {
+        int r;
+
         /* Make sur GART are not working */
         if (rdev->flags & RADEON_IS_PCI)
                 r100_pci_gart_disable(rdev);
@@ -3949,7 +3949,11 @@ int r100_resume(struct radeon_device *rdev)
         radeon_surface_init(rdev);
 
         rdev->accel_working = true;
-        return r100_startup(rdev);
+        r = r100_startup(rdev);
+        if (r) {
+                rdev->accel_working = false;
+        }
+        return r;
 }
 
 int r100_suspend(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 3fc0d29a5f39..6829638cca40 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -1431,6 +1431,8 @@ static int r300_startup(struct radeon_device *rdev)
 
 int r300_resume(struct radeon_device *rdev)
 {
+        int r;
+
         /* Make sur GART are not working */
         if (rdev->flags & RADEON_IS_PCIE)
                 rv370_pcie_gart_disable(rdev);
@@ -1452,7 +1454,11 @@ int r300_resume(struct radeon_device *rdev)
         radeon_surface_init(rdev);
 
         rdev->accel_working = true;
-        return r300_startup(rdev);
+        r = r300_startup(rdev);
+        if (r) {
+                rdev->accel_working = false;
+        }
+        return r;
 }
 
 int r300_suspend(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c
index 666e28fe509c..b14323053bad 100644
--- a/drivers/gpu/drm/radeon/r420.c
+++ b/drivers/gpu/drm/radeon/r420.c
@@ -291,6 +291,8 @@ static int r420_startup(struct radeon_device *rdev)
 
 int r420_resume(struct radeon_device *rdev)
 {
+        int r;
+
         /* Make sur GART are not working */
         if (rdev->flags & RADEON_IS_PCIE)
                 rv370_pcie_gart_disable(rdev);
@@ -316,7 +318,11 @@ int r420_resume(struct radeon_device *rdev)
         radeon_surface_init(rdev);
 
         rdev->accel_working = true;
-        return r420_startup(rdev);
+        r = r420_startup(rdev);
+        if (r) {
+                rdev->accel_working = false;
+        }
+        return r;
 }
 
 int r420_suspend(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/r520.c b/drivers/gpu/drm/radeon/r520.c
index 4ae1615e752f..25084e824dbc 100644
--- a/drivers/gpu/drm/radeon/r520.c
+++ b/drivers/gpu/drm/radeon/r520.c
@@ -218,6 +218,8 @@ static int r520_startup(struct radeon_device *rdev)
 
 int r520_resume(struct radeon_device *rdev)
 {
+        int r;
+
         /* Make sur GART are not working */
         if (rdev->flags & RADEON_IS_PCIE)
                 rv370_pcie_gart_disable(rdev);
@@ -237,7 +239,11 @@ int r520_resume(struct radeon_device *rdev)
         radeon_surface_init(rdev);
 
         rdev->accel_working = true;
-        return r520_startup(rdev);
+        r = r520_startup(rdev);
+        if (r) {
+                rdev->accel_working = false;
+        }
+        return r;
 }
 
 int r520_init(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 4f08e5e6ee9d..fbcd84803b60 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -2529,6 +2529,7 @@ int r600_resume(struct radeon_device *rdev)
         r = r600_startup(rdev);
         if (r) {
                 DRM_ERROR("r600 startup failed on resume\n");
+                rdev->accel_working = false;
                 return r;
         }
 
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 5082d17d14dc..1f53ae74ada1 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -2931,6 +2931,20 @@ radeon_atombios_connected_scratch_regs(struct drm_connector *connector,
                         bios_6_scratch &= ~ATOM_S6_ACC_REQ_DFP5;
                 }
         }
+        if ((radeon_encoder->devices & ATOM_DEVICE_DFP6_SUPPORT) &&
+            (radeon_connector->devices & ATOM_DEVICE_DFP6_SUPPORT)) {
+                if (connected) {
+                        DRM_DEBUG_KMS("DFP6 connected\n");
+                        bios_0_scratch |= ATOM_S0_DFP6;
+                        bios_3_scratch |= ATOM_S3_DFP6_ACTIVE;
+                        bios_6_scratch |= ATOM_S6_ACC_REQ_DFP6;
+                } else {
+                        DRM_DEBUG_KMS("DFP6 disconnected\n");
+                        bios_0_scratch &= ~ATOM_S0_DFP6;
+                        bios_3_scratch &= ~ATOM_S3_DFP6_ACTIVE;
+                        bios_6_scratch &= ~ATOM_S6_ACC_REQ_DFP6;
+                }
+        }
 
         if (rdev->family >= CHIP_R600) {
                 WREG32(R600_BIOS_0_SCRATCH, bios_0_scratch);
@@ -2951,6 +2965,9 @@ radeon_atombios_encoder_crtc_scratch_regs(struct drm_encoder *encoder, int crtc)
         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
         uint32_t bios_3_scratch;
 
+        if (ASIC_IS_DCE4(rdev))
+                return;
+
         if (rdev->family >= CHIP_R600)
                 bios_3_scratch = RREG32(R600_BIOS_3_SCRATCH);
         else
@@ -3003,6 +3020,9 @@ radeon_atombios_encoder_dpms_scratch_regs(struct drm_encoder *encoder, bool on)
         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
         uint32_t bios_2_scratch;
 
+        if (ASIC_IS_DCE4(rdev))
+                return;
+
         if (rdev->family >= CHIP_R600)
                 bios_2_scratch = RREG32(R600_BIOS_2_SCRATCH);
         else
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index 435a3d970ab8..e64bec488ed8 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -453,6 +453,10 @@ int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
         int r;
 
         radeon_mutex_lock(&rdev->cs_mutex);
+        if (!rdev->accel_working) {
+                radeon_mutex_unlock(&rdev->cs_mutex);
+                return -EBUSY;
+        }
         /* initialize parser */
         memset(&parser, 0, sizeof(struct radeon_cs_parser));
         parser.filp = filp;
diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c
index 64ea3dd9e6ff..4bd36a354fbe 100644
--- a/drivers/gpu/drm/radeon/radeon_fence.c
+++ b/drivers/gpu/drm/radeon/radeon_fence.c
@@ -364,8 +364,10 @@ int radeon_fence_count_emitted(struct radeon_device *rdev, int ring)
         int not_processed = 0;
 
         read_lock_irqsave(&rdev->fence_lock, irq_flags);
-        if (!rdev->fence_drv[ring].initialized)
+        if (!rdev->fence_drv[ring].initialized) {
+                read_unlock_irqrestore(&rdev->fence_lock, irq_flags);
                 return 0;
+        }
 
         if (!list_empty(&rdev->fence_drv[ring].emitted)) {
                 struct list_head *ptr;
diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index 30a4c5014c8b..92c9ea4751fb 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -500,8 +500,11 @@ static char radeon_debugfs_ib_names[RADEON_IB_POOL_SIZE][32];
 int radeon_debugfs_ring_init(struct radeon_device *rdev)
 {
 #if defined(CONFIG_DEBUG_FS)
-        return radeon_debugfs_add_files(rdev, radeon_debugfs_ring_info_list,
-                                        ARRAY_SIZE(radeon_debugfs_ring_info_list));
+        if (rdev->family >= CHIP_CAYMAN)
+                return radeon_debugfs_add_files(rdev, radeon_debugfs_ring_info_list,
+                                                ARRAY_SIZE(radeon_debugfs_ring_info_list));
+        else
+                return radeon_debugfs_add_files(rdev, radeon_debugfs_ring_info_list, 1);
 #else
         return 0;
 #endif
diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index b0ce84a20a68..866a05be75f2 100644
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -442,6 +442,8 @@ static int rs400_startup(struct radeon_device *rdev)
 
 int rs400_resume(struct radeon_device *rdev)
 {
+        int r;
+
         /* Make sur GART are not working */
         rs400_gart_disable(rdev);
         /* Resume clock before doing reset */
@@ -462,7 +464,11 @@ int rs400_resume(struct radeon_device *rdev)
         radeon_surface_init(rdev);
 
         rdev->accel_working = true;
-        return rs400_startup(rdev);
+        r = rs400_startup(rdev);
+        if (r) {
+                rdev->accel_working = false;
+        }
+        return r;
 }
 
 int rs400_suspend(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index ec46eb45e34c..4fc700684dcd 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -684,9 +684,7 @@ int rs600_irq_process(struct radeon_device *rdev)
                         WREG32(RADEON_BUS_CNTL, msi_rearm | RS600_MSI_REARM);
                         break;
                 default:
-                        msi_rearm = RREG32(RADEON_MSI_REARM_EN) & ~RV370_MSI_REARM_EN;
-                        WREG32(RADEON_MSI_REARM_EN, msi_rearm);
-                        WREG32(RADEON_MSI_REARM_EN, msi_rearm | RV370_MSI_REARM_EN);
+                        WREG32(RADEON_MSI_REARM_EN, RV370_MSI_REARM_EN);
                         break;
                 }
         }
@@ -878,6 +876,8 @@ static int rs600_startup(struct radeon_device *rdev)
 
 int rs600_resume(struct radeon_device *rdev)
 {
+        int r;
+
         /* Make sur GART are not working */
         rs600_gart_disable(rdev);
         /* Resume clock before doing reset */
@@ -896,7 +896,11 @@ int rs600_resume(struct radeon_device *rdev)
         radeon_surface_init(rdev);
 
         rdev->accel_working = true;
-        return rs600_startup(rdev);
+        r = rs600_startup(rdev);
+        if (r) {
+                rdev->accel_working = false;
+        }
+        return r;
 }
 
 int rs600_suspend(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 4f24a0fa8c82..f68dff2fadcb 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -659,6 +659,8 @@ static int rs690_startup(struct radeon_device *rdev)
 
 int rs690_resume(struct radeon_device *rdev)
 {
+        int r;
+
         /* Make sur GART are not working */
         rs400_gart_disable(rdev);
         /* Resume clock before doing reset */
@@ -677,7 +679,11 @@ int rs690_resume(struct radeon_device *rdev)
         radeon_surface_init(rdev);
 
         rdev->accel_working = true;
-        return rs690_startup(rdev);
+        r = rs690_startup(rdev);
+        if (r) {
+                rdev->accel_working = false;
+        }
+        return r;
 }
 
 int rs690_suspend(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c
index 880637fd1946..959bf4483bea 100644
--- a/drivers/gpu/drm/radeon/rv515.c
+++ b/drivers/gpu/drm/radeon/rv515.c
@@ -424,6 +424,8 @@ static int rv515_startup(struct radeon_device *rdev)
 
 int rv515_resume(struct radeon_device *rdev)
 {
+        int r;
+
         /* Make sur GART are not working */
         if (rdev->flags & RADEON_IS_PCIE)
                 rv370_pcie_gart_disable(rdev);
@@ -443,7 +445,11 @@ int rv515_resume(struct radeon_device *rdev)
         radeon_surface_init(rdev);
 
         rdev->accel_working = true;
-        return rv515_startup(rdev);
+        r =  rv515_startup(rdev);
+        if (r) {
+                rdev->accel_working = false;
+        }
+        return r;
 }
 
 int rv515_suspend(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index a1668b659ddd..c049c0c51841 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -1139,6 +1139,7 @@ int rv770_resume(struct radeon_device *rdev)
         r = rv770_startup(rdev);
         if (r) {
                 DRM_ERROR("r600 startup failed on resume\n");
+                rdev->accel_working = false;
                 return r;
         }