drm/nouveau: Get rid of the remaining VGA CRTC locking.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

2 files changed, 5 insertions, 17 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index aae29cc0cd80..40231cea465e 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -6550,11 +6550,8 @@ nouveau_run_vbios_init(struct drm_device *dev)
         struct nvbios *bios = &dev_priv->vbios;
         int i, ret = 0;
 
-        NVLockVgaCrtcs(dev, false);
-        if (nv_two_heads(dev)) {
-                bios->state.crtchead = 0;
-                NVSetOwner(dev, 0);
-        }
+        /* Reset the BIOS head to 0. */
+        bios->state.crtchead = 0;
 
         if (bios->major_version < 5)    /* BMP only */
                 load_nv17_hw_sequencer_ucode(dev, bios);
@@ -6587,8 +6584,6 @@ nouveau_run_vbios_init(struct drm_device *dev)
                 }
         }
 
-        NVLockVgaCrtcs(dev, true);
-
         return ret;
 }
 
@@ -6618,13 +6613,11 @@ nouveau_bios_posted(struct drm_device *dev)
                 return true;
         }
 
-        NVLockVgaCrtcs(dev, false);
         htotal  = NVReadVgaCrtc(dev, 0, 0x06);
         htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x01) << 8;
         htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x20) << 4;
         htotal |= (NVReadVgaCrtc(dev, 0, 0x25) & 0x01) << 10;
         htotal |= (NVReadVgaCrtc(dev, 0, 0x41) & 0x01) << 11;
-        NVLockVgaCrtcs(dev, true);
 
         return (htotal != 0);
 }
@@ -6668,14 +6661,12 @@ nouveau_bios_init(struct drm_device *dev)
                 return ret;
 
         /* feature_byte on BMP is poor, but init always sets CR4B */
-        NVLockVgaCrtcs(dev, false);
         if (bios->major_version < 5)
                 bios->is_mobile = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_4B) & 0x40;
 
         /* all BIT systems need p_f_m_t for digital_min_front_porch */
         if (bios->is_mobile || bios->major_version >= 5)
                 ret = parse_fp_mode_table(dev, bios);
-        NVLockVgaCrtcs(dev, true);
 
         /* allow subsequent scripts to execute */
         bios->execute = true;
diff --git a/drivers/gpu/drm/nouveau/nouveau_i2c.c b/drivers/gpu/drm/nouveau/nouveau_i2c.c
index 5588e66dd9fc..cb0cb34440c6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_i2c.c
+++ b/drivers/gpu/drm/nouveau/nouveau_i2c.c
@@ -305,21 +305,18 @@ nouveau_i2c_identify(struct drm_device *dev, const char *what,
                      struct i2c_board_info *info, int index)
 {
         struct nouveau_i2c_chan *i2c = nouveau_i2c_find(dev, index);
-        int was_locked, i;
+        int i;
 
-        was_locked = NVLockVgaCrtcs(dev, false);
         NV_DEBUG(dev, "Probing %ss on I2C bus: %d\n", what, index);
 
         for (i = 0; info[i].addr; i++) {
                 if (nouveau_probe_i2c_addr(i2c, info[i].addr)) {
                         NV_INFO(dev, "Detected %s: %s\n", what, info[i].type);
-                        goto out;
+                        return i;
                 }
         }
 
         NV_DEBUG(dev, "No devices found.\n");
-out:
-        NVLockVgaCrtcs(dev, was_locked);
 
-        return info[i].addr ? i : -ENODEV;
+        return -ENODEV;
 }