drm/i915: Add intel_bios_cleanup() function

Web:        https://git.kernel.org/torvalds/c/7928e9bb09dc7f108a1a2b589ef1c7b86843569c
Commit:     7928e9bb09dc7f108a1a2b589ef1c7b86843569c
Parent:     405cacc947f7b58969b2a8ab1568c2d98b245308
Refname:    refs/heads/master
Author:     Hans de Goede <[email protected]>
AuthorDate: Wed Feb 14 09:21:49 2018 +0100
Committer:  Rodrigo Vivi <[email protected]>
CommitDate: Wed Feb 14 11:41:47 2018 -0800

    drm/i915: Add intel_bios_cleanup() function
    
    Add an intel_bios_cleanup() function to act as counterpart of
    intel_bios_init() and move the cleanup of vbt related resources there,
    putting it in the same file as the allocation.
    
    Changed in v2:
    -While touching the code anyways, remove the unnecessary:
     if (dev_priv->vbt.child_dev) done before kfree(dev_priv->vbt.child_dev)
    
    Reviewed-by: Ville Syrjälä <[email protected]>
    Signed-off-by: Hans de Goede <[email protected]>
    Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
    (cherry picked from commit 785f076b3ba781804f2b22b347b4431e3efb0ab3)
    Signed-off-by: Rodrigo Vivi <[email protected]>
---
 drivers/gpu/drm/i915/i915_drv.c   | 14 +-------------
 drivers/gpu/drm/i915/i915_drv.h   |  1 +
 drivers/gpu/drm/i915/intel_bios.c | 15 +++++++++++++++
 3 files changed, 17 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 173d0095e3b2..2f5209de0391 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1433,19 +1433,7 @@ void i915_driver_unload(struct drm_device *dev)
 
 	intel_modeset_cleanup(dev);
 
-	/*
-	 * free the memory space allocated for the child device
-	 * config parsed from VBT
-	 */
-	if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) {
-		kfree(dev_priv->vbt.child_dev);
-		dev_priv->vbt.child_dev = NULL;
-		dev_priv->vbt.child_dev_num = 0;
-	}
-	kfree(dev_priv->vbt.sdvo_lvds_vbt_mode);
-	dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
-	kfree(dev_priv->vbt.lfp_lvds_vbt_mode);
-	dev_priv->vbt.lfp_lvds_vbt_mode = NULL;
+	intel_bios_cleanup(dev_priv);
 
 	vga_switcheroo_unregister_client(pdev);
 	vga_client_register(pdev, NULL, NULL, NULL);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index a42deebedb0f..d2fc519bc592 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3657,6 +3657,7 @@ extern void intel_i2c_reset(struct drm_i915_private *dev_priv);
 
 /* intel_bios.c */
 void intel_bios_init(struct drm_i915_private *dev_priv);
+void intel_bios_cleanup(struct drm_i915_private *dev_priv);
 bool intel_bios_is_valid_vbt(const void *buf, size_t size);
 bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
 bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index f7f771749e48..57db816f962b 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -1588,6 +1588,21 @@ out:
 		pci_unmap_rom(pdev, bios);
 }
 
+/**
+ * intel_bios_cleanup - Free any resources allocated by intel_bios_init()
+ * @dev_priv: i915 device instance
+ */
+void intel_bios_cleanup(struct drm_i915_private *dev_priv)
+{
+	kfree(dev_priv->vbt.child_dev);
+	dev_priv->vbt.child_dev = NULL;
+	dev_priv->vbt.child_dev_num = 0;
+	kfree(dev_priv->vbt.sdvo_lvds_vbt_mode);
+	dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
+	kfree(dev_priv->vbt.lfp_lvds_vbt_mode);
+	dev_priv->vbt.lfp_lvds_vbt_mode = NULL;
+}
+
 /**
  * intel_bios_is_tv_present - is integrated TV present in VBT
  * @dev_priv:	i915 device instance
--
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