diff --git a/drivers/staging/gma500/accel_2d.c b/drivers/staging/gma500/accel_2d.c
index be9237184ab83a55ada02430f4908e123355cd05..114b99a1ce1914d8e5b906d7e070986350e974ae 100644
--- a/drivers/staging/gma500/accel_2d.c
+++ b/drivers/staging/gma500/accel_2d.c
@@ -111,8 +111,9 @@ static int psbfb_2d_submit(struct drm_psb_private *dev_priv, uint32_t *cmdbuf,
 	int ret = 0;
 	int i;
 	unsigned submit_size;
+	unsigned long flags;
 
-	mutex_lock(&dev_priv->mutex_2d);
+	spin_lock_irqsave(&dev_priv->lock_2d, flags);
 	while (size > 0) {
 		submit_size = (size < 0x60) ? size : 0x60;
 		size -= submit_size;
@@ -127,7 +128,7 @@ static int psbfb_2d_submit(struct drm_psb_private *dev_priv, uint32_t *cmdbuf,
 
 		(void)PSB_RSGX32(PSB_SGX_2D_SLAVE_PORT + i - 4);
 	}
-	mutex_unlock(&dev_priv->mutex_2d);
+	spin_unlock_irqrestore(&dev_priv->lock_2d, flags);
 	return ret;
 }
 
@@ -327,8 +328,9 @@ int psbfb_sync(struct fb_info *info)
 	struct drm_psb_private *dev_priv = dev->dev_private;
 	unsigned long _end = jiffies + DRM_HZ;
 	int busy = 0;
+	unsigned long flags;
 
-	mutex_lock(&dev_priv->mutex_2d);
+	spin_lock_irqsave(&dev_priv->lock_2d, flags);
 	/*
 	 * First idle the 2D engine.
 	 */
@@ -357,7 +359,7 @@ int psbfb_sync(struct fb_info *info)
 					_PSB_C2B_STATUS_BUSY) != 0);
 
 out:
-	mutex_unlock(&dev_priv->mutex_2d);
+	spin_unlock_irqrestore(&dev_priv->lock_2d, flags);
 	return (busy) ? -EBUSY : 0;
 }
 
diff --git a/drivers/staging/gma500/psb_drv.c b/drivers/staging/gma500/psb_drv.c
index 297b05a391d638e93eccb539153ef7584571b78e..dc676c2ce810c1d5303a36f6b034424afe8ad652 100644
--- a/drivers/staging/gma500/psb_drv.c
+++ b/drivers/staging/gma500/psb_drv.c
@@ -228,7 +228,7 @@ static int psb_do_init(struct drm_device *dev)
 
 
 	spin_lock_init(&dev_priv->irqmask_lock);
-	mutex_init(&dev_priv->mutex_2d);
+	spin_lock_init(&dev_priv->lock_2d);
 
 	PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK0);
 	PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK1);
diff --git a/drivers/staging/gma500/psb_drv.h b/drivers/staging/gma500/psb_drv.h
index 9cbb494ed3d601a4588bb127fbd7a6653775de3a..11d963a055be74ebb07108b1c30e4da225e69c4e 100644
--- a/drivers/staging/gma500/psb_drv.h
+++ b/drivers/staging/gma500/psb_drv.h
@@ -612,7 +612,7 @@ struct drm_psb_private {
 	void (*exit_idle)(struct drm_device *dev, u32 update_src);
 
 	/* 2D acceleration */
-	struct mutex mutex_2d;
+	spinlock_t lock_2d;
 
 	/* FIXME: Arrays anyone ? */
 	struct mdfld_dsi_encoder *encoder0;