From: Ferruh Yigit Date: Thu, 23 May 2013 16:56:55 +0000 (-0700) Subject: Input: cyttsp - fix memcpy size param X-Git-Tag: firefly_0821_release~176^2~541^2~271 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d2983cdb480157f637df07723f28aaa657b1080d;p=firefly-linux-kernel-4.4.55.git Input: cyttsp - fix memcpy size param memcpy param is wrong because of offset in bl_cmd, this may corrupt the stack which may cause a crash. Tested-by: Ferruh Yigit on TMA300-DVK Signed-off-by: Ferruh Yigit Acked-by: Javier Martinez Canillas Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c index 8e60437ac85b..97ba89128312 100644 --- a/drivers/input/touchscreen/cyttsp_core.c +++ b/drivers/input/touchscreen/cyttsp_core.c @@ -133,7 +133,7 @@ static int cyttsp_exit_bl_mode(struct cyttsp *ts) memcpy(bl_cmd, bl_command, sizeof(bl_command)); if (ts->pdata->bl_keys) memcpy(&bl_cmd[sizeof(bl_command) - CY_NUM_BL_KEYS], - ts->pdata->bl_keys, sizeof(bl_command)); + ts->pdata->bl_keys, CY_NUM_BL_KEYS); error = ttsp_write_block_data(ts, CY_REG_BASE, sizeof(bl_cmd), bl_cmd);