[PATCH 2/9] drm/i915: [sparse] don't use variable size arrays

[Ben Widawsky <ben@bwidawsk.net>]

Sparse doesn't like:
"error: bad constant expression"

Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
---
 drivers/gpu/drm/i915/intel_sdvo.c |   24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index aa1a0d5..1daa198 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -443,9 +443,17 @@ static const char *cmd_status_names[] = {
 static bool intel_sdvo_write_cmd(struct intel_sdvo *intel_sdvo, u8 cmd,
 				 const void *args, int args_len)
 {
-	u8 buf[args_len*2 + 2], status;
-	struct i2c_msg msgs[args_len + 3];
-	int i, ret;
+	u8 *buf, status;
+	struct i2c_msg *msgs;
+	int i, ret = true;
+
+	buf = (u8 *)kzalloc(args_len * 2 + 2, GFP_KERNEL);
+	if (!buf)
+		return false;
+
+	msgs = drm_malloc_ab(args_len + 3, sizeof(*msgs));
+	if (!msgs)
+		return false;
 
 	intel_sdvo_debug_write(intel_sdvo, cmd, args, args_len);
 
@@ -479,15 +487,19 @@ static bool intel_sdvo_write_cmd(struct intel_sdvo *intel_sdvo, u8 cmd,
 	ret = i2c_transfer(intel_sdvo->i2c, msgs, i+3);
 	if (ret < 0) {
 		DRM_DEBUG_KMS("I2c transfer returned %d\n", ret);
-		return false;
+		ret = false;
+		goto out;
 	}
 	if (ret != i+3) {
 		/* failure in I2C transfer */
 		DRM_DEBUG_KMS("I2c transfer returned %d/%d\n", ret, i+3);
-		return false;
+		ret = false;
 	}
 
-	return true;
+out:
+	drm_free_large(msgs);
+	kfree(buf);
+	return ret;
 }
 
 static bool intel_sdvo_read_response(struct intel_sdvo *intel_sdvo,
-- 
1.7.10