A frame is a u8 array with the following structure:
[PAYLOAD_HEADER, PAYLOAD_LENGTH, ...PAYLOAD_BODY...]
PAYLOAD_BODY can be at most 255 bytes long, as it's size is represented
by PAYLOAD_LENGTH. Therefore we can reduce the stack memory allocated to
payload_buffer[] roughly by half, from 512 to 257 bytes.
Signed-off-by: Luis Ortega <luior...@upv.es>
---
drivers/input/touchscreen/zforce_ts.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/zforce_ts.c
b/drivers/input/touchscreen/zforce_ts.c
index e082d5c..afb2492 100644
--- a/drivers/input/touchscreen/zforce_ts.c
+++ b/drivers/input/touchscreen/zforce_ts.c
@@ -33,6 +33,7 @@
#define WAIT_TIMEOUT msecs_to_jiffies(1000)
#define FRAME_START 0xee
+#define FRAME_MAXSIZE 257
/* Offsets of the different parts of the payload the controller sends */
#define PAYLOAD_HEADER 0
@@ -475,7 +476,7 @@ static irqreturn_t zforce_irq_thread(int irq, void *dev_id)
struct i2c_client *client = ts->client;
const struct zforce_ts_platdata *pdata = dev_get_platdata(&client->dev);
int ret;
- u8 payload_buffer[512];
+ u8 payload_buffer[FRAME_MAXSIZE];
u8 *payload;
/*
--
1.8.5.3
--
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