From: Rebecca Schultz Zavin <rebecca@android.com>
Date: Fri, 17 Dec 2010 23:06:38 +0000 (-0800)
Subject: video: tegra: nvmap: Add logging to some error conditions
X-Git-Tag: firefly_0821_release~9833^2~83^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7e78d3b5edc1bf031125d869fc7537a98c701450;p=firefly-linux-kernel-4.4.55.git

video: tegra: nvmap: Add logging to some error conditions

Change-Id: I1ec34fd4a6bb21a6d84912a7228c209f459261be
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
---

diff --git a/drivers/video/tegra/nvmap/nvmap.c b/drivers/video/tegra/nvmap/nvmap.c
index 3cf3935e53fb..262f1b9b357d 100644
--- a/drivers/video/tegra/nvmap/nvmap.c
+++ b/drivers/video/tegra/nvmap/nvmap.c
@@ -414,6 +414,13 @@ static int nvmap_validate_get_pin_array(struct nvmap_client *client,
 
 		ref = _nvmap_validate_id_locked(client, arr[i].pin_mem);
 
+		if (!ref)
+			nvmap_warn(client, "falied to validate id\n");
+		else if (!ref->handle)
+			nvmap_warn(client, "id had no associated handle\n");
+		else if (!ref->handle->alloc)
+			nvmap_warn(client, "handle had no allocation\n");
+
 		if (!ref || !ref->handle || !ref->handle->alloc) {
 			ret = -EPERM;
 			break;
@@ -492,6 +499,7 @@ int nvmap_pin_array(struct nvmap_client *client, struct nvmap_handle *gather,
 	count = nvmap_validate_get_pin_array(client, arr, nr, unique_arr);
 	if (count < 0) {
 		mutex_unlock(&client->share->pin_lock);
+		nvmap_warn(client, "failed to validate pin array\n");
 		return count;
 	}