From: Oliver Graute <oliver.graute@xxxxxxxxxxxxxxxxx> remove edt_ft5x06_ts_readwrite() call because this result in a stack corruption crash on EP011M09 [ 2.968250] edt_ft5x06 1-0038: 1-0038 supply vcc not found, using dummy regulator [ 2.991327] input: EP0110M09 as /devices/platform/bus@5a000000/5a820000.i2c/i2c-1/1-0038/input/input0 [ 3.011818] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: edt_ft5x06_ts_probe+0x9e4/0xa98 [ 3.022519] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.6.0-rc1-next-20200214+ #69 [ 3.030261] Hardware name: Advantech iMX8QM DMSSE20 (DT) [ 3.035583] Workqueue: events deferred_probe_work_func [ 3.040724] Call trace: [ 3.043179] dump_backtrace+0x0/0x1c0 [ 3.046839] show_stack+0x14/0x20 [ 3.050161] dump_stack+0xb4/0xfc [ 3.053477] panic+0x158/0x320 [ 3.056531] print_tainted+0x0/0xa8 [ 3.060015] edt_ft5x06_ts_probe+0x9e4/0xa98 [ 3.064286] i2c_device_probe+0x2d0/0x2f8 [ 3.068299] really_probe+0xd8/0x438 [ 3.071874] driver_probe_device+0xdc/0x130 [ 3.076064] __device_attach_driver+0x88/0x108 [ 3.080511] bus_for_each_drv+0x74/0xc0 [ 3.084349] __device_attach+0xdc/0x160 [ 3.088189] device_initial_probe+0x10/0x18 [ 3.092376] bus_probe_device+0x90/0x98 [ 3.096210] device_add+0x434/0x770 [ 3.099699] device_register+0x1c/0x28 [ 3.103447] i2c_new_client_device+0x134/0x2a8 [ 3.107897] of_i2c_register_device+0xb0/0xd8 [ 3.112253] of_i2c_register_devices+0x9c/0x198 [ 3.116780] i2c_register_adapter+0x150/0x418 [ 3.121141] __i2c_add_numbered_adapter+0x58/0xa0 [ 3.125849] i2c_add_adapter+0x9c/0xc8 [ 3.129598] lpi2c_imx_probe+0x1b0/0x2a0 [ 3.133523] platform_drv_probe+0x50/0xa0 [ 3.137534] really_probe+0xd8/0x438 [ 3.141105] driver_probe_device+0xdc/0x130 [ 3.145284] __device_attach_driver+0x88/0x108 [ 3.149731] bus_for_each_drv+0x74/0xc0 [ 3.153562] __device_attach+0xdc/0x160 [ 3.157394] device_initial_probe+0x10/0x18 [ 3.161581] bus_probe_device+0x90/0x98 [ 3.165412] deferred_probe_work_func+0x88/0xd8 [ 3.169942] process_one_work+0x19c/0x320 [ 3.173952] worker_thread+0x1f0/0x420 [ 3.177703] kthread+0xf0/0x120 [ 3.180843] ret_from_fork+0x10/0x18 [ 3.184432] SMP: stopping secondary CPUs [ 3.188362] Kernel Offset: disabled [ 3.191853] CPU features: 0x10002,2100600c [ 3.195951] Memory Limit: none Signed-off-by: Oliver Graute <oliver.graute@xxxxxxxxxxxxxxxxx> --- drivers/input/touchscreen/edt-ft5x06.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 06aa8ba0b6d7..6fbc87d041a1 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -819,10 +819,6 @@ static int edt_ft5x06_ts_identify(struct i2c_client *client, * to have garbage in there */ memset(rdbuf, 0, sizeof(rdbuf)); - error = edt_ft5x06_ts_readwrite(client, 1, "\xBB", - EDT_NAME_LEN - 1, rdbuf); - if (error) - return error; /* Probe content for something consistent. * M06 starts with a response byte, M12 gives the data directly. -- 2.17.1
