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Revert "Input: zforce - don't overwrite the stack"

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This reverts commit 7d01cd261c because
with given FRAME_MAXSIZE of 257 the check will never trigger and it
causes warnings from GCC (with -Wtype-limits). Also the check was
incorrect as it was not accounting for the already read 2 bytes of data
stored in the buffer.
This commit is contained in:
Dmitry Torokhov 2015-07-28 10:25:03 -07:00
parent d58069265c
commit 3213afb8bf
1 changed files with 1 additions and 1 deletions
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2
drivers/input/touchscreen/zforce_ts.c
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@ -429,7 +429,7 @@ static int zforce_read_packet(struct zforce_ts *ts, u8 *buf)
goto unlock;
}
if (buf[PAYLOAD_LENGTH] == 0 || buf[PAYLOAD_LENGTH] > FRAME_MAXSIZE) {
if (buf[PAYLOAD_LENGTH] == 0) {
dev_err(&client->dev, "invalid payload length: %d\n",
buf[PAYLOAD_LENGTH]);
ret = -EIO;