drm/i915: don't use a temp buffer for opregion debugfs file

Hasn't been necessary since

commit 115719fceaa733d646e39cdce83cc32ddb891a49
Author: Williams, Dan J <dan.j.williams@intel.com>
Date:   Mon Oct 12 21:12:57 2015 +0000

    i915: switch from acpi_os_ioremap to memremap

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/74664a556a56d0eceb0029bbd77ffc1d771b0628.1450089383.git.jani.nikula@intel.com

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 24318b79bcfc663128349882284f55833e0ef937..a9e1f18c36d1884baecf79c2974fd2fc3f75c140 100644 (file)
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1842,25 +1842,18 @@ static int i915_opregion(struct seq_file *m, void *unused)
        struct drm_device *dev = node->minor->dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct intel_opregion *opregion = &dev_priv->opregion;
-       void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
        int ret;
 
-       if (data == NULL)
-               return -ENOMEM;
-
        ret = mutex_lock_interruptible(&dev->struct_mutex);
        if (ret)
                goto out;
 
-       if (opregion->header) {
-               memcpy(data, opregion->header, OPREGION_SIZE);
-               seq_write(m, data, OPREGION_SIZE);
-       }
+       if (opregion->header)
+               seq_write(m, opregion->header, OPREGION_SIZE);
 
        mutex_unlock(&dev->struct_mutex);
 
 out:
-       kfree(data);
        return 0;
 }