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

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commit 115719fcea
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
This commit is contained in:
Jani Nikula
2015-12-14 12:50:53 +02:00
parent 827303855d
commit 2455a8e43d
1 changed files with 2 additions and 9 deletions
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11
drivers/gpu/drm/i915/i915_debugfs.c
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@@ -1842,25 +1842,18 @@ static int i915_opregion(struct seq_file *m, void *unused)
struct drm_device *dev = node->minor->dev; struct drm_device *dev = node->minor->dev;
struct drm_i915_private *dev_priv = dev->dev_private; struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_opregion *opregion = &dev_priv->opregion; struct intel_opregion *opregion = &dev_priv->opregion;
void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
int ret; int ret;
if (data == NULL)
return -ENOMEM;
ret = mutex_lock_interruptible(&dev->struct_mutex); ret = mutex_lock_interruptible(&dev->struct_mutex);
if (ret) if (ret)
goto out; goto out;
if (opregion->header) { if (opregion->header)
memcpy(data, opregion->header, OPREGION_SIZE); seq_write(m, opregion->header, OPREGION_SIZE);
seq_write(m, data, OPREGION_SIZE);
}
mutex_unlock(&dev->struct_mutex); mutex_unlock(&dev->struct_mutex);
out: out:
kfree(data);
return 0; return 0;
} }