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path: root/drivers/input/touchscreen/sur40.c
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Diffstat (limited to 'drivers/input/touchscreen/sur40.c')
-rw-r--r--drivers/input/touchscreen/sur40.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index b6c4d03de340..880c40b23f66 100644
--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -197,28 +197,34 @@ static int sur40_command(struct sur40_state *dev,
static int sur40_init(struct sur40_state *dev)
{
int result;
- u8 buffer[24];
+ u8 *buffer;
+
+ buffer = kmalloc(24, GFP_KERNEL);
+ if (!buffer) {
+ result = -ENOMEM;
+ goto error;
+ }
/* stupidly replay the original MS driver init sequence */
result = sur40_command(dev, SUR40_GET_VERSION, 0x00, buffer, 12);
if (result < 0)
- return result;
+ goto error;
result = sur40_command(dev, SUR40_GET_VERSION, 0x01, buffer, 12);
if (result < 0)
- return result;
+ goto error;
result = sur40_command(dev, SUR40_GET_VERSION, 0x02, buffer, 12);
if (result < 0)
- return result;
+ goto error;
result = sur40_command(dev, SUR40_UNKNOWN2, 0x00, buffer, 24);
if (result < 0)
- return result;
+ goto error;
result = sur40_command(dev, SUR40_UNKNOWN1, 0x00, buffer, 5);
if (result < 0)
- return result;
+ goto error;
result = sur40_command(dev, SUR40_GET_VERSION, 0x03, buffer, 12);
@@ -226,7 +232,8 @@ static int sur40_init(struct sur40_state *dev)
* Discard the result buffer - no known data inside except
* some version strings, maybe extract these sometime...
*/
-
+error:
+ kfree(buffer);
return result;
}