drivers/input/touchscreen/ili210x.c:664 ili251x_firmware_busy() error: uninitialized symbol 'data'.

drivers/input/touchscreen/ili210x.c:664 ili251x_firmware_busy() error: uninitialized symbol 'data'.

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 2860 bytes --]

CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Marek Vasut <marex@denx.de>
CC: Dmitry Torokhov <dmitry.torokhov@gmail.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   cd8c917a56f20f48748dd43d9ae3caff51d5b987
commit: c6ac8f0b4ca927316eb40e1e9ba83df5d29f3793 Input: ili210x - add ili251x firmware update support
date:   7 weeks ago
:::::: branch date: 3 hours ago
:::::: commit date: 7 weeks ago
config: x86_64-randconfig-m001-20211206 (https://download.01.org/0day-ci/archive/20211207/202112071130.VjoibOrG-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

New smatch warnings:
drivers/input/touchscreen/ili210x.c:664 ili251x_firmware_busy() error: uninitialized symbol 'data'.

Old smatch warnings:
drivers/input/touchscreen/ili210x.c:600 ili251x_firmware_to_buffer() error: uninitialized symbol 'fw_addr'.
drivers/input/touchscreen/ili210x.c:600 ili251x_firmware_to_buffer() error: uninitialized symbol 'fw_len'.
drivers/input/touchscreen/ili210x.c:690 ili251x_firmware_write_to_ic() warn: right shifting more than type allows 16 vs 16
drivers/input/touchscreen/ili210x.c:691 ili251x_firmware_write_to_ic() warn: right shifting more than type allows 16 vs 16

vim +/data +664 drivers/input/touchscreen/ili210x.c

c6ac8f0b4ca927 Marek Vasut 2021-10-16  650  
c6ac8f0b4ca927 Marek Vasut 2021-10-16  651  static int ili251x_firmware_busy(struct i2c_client *client)
c6ac8f0b4ca927 Marek Vasut 2021-10-16  652  {
c6ac8f0b4ca927 Marek Vasut 2021-10-16  653  	struct ili210x *priv = i2c_get_clientdata(client);
c6ac8f0b4ca927 Marek Vasut 2021-10-16  654  	int error, i = 0;
c6ac8f0b4ca927 Marek Vasut 2021-10-16  655  	u8 data;
c6ac8f0b4ca927 Marek Vasut 2021-10-16  656  
c6ac8f0b4ca927 Marek Vasut 2021-10-16  657  	do {
c6ac8f0b4ca927 Marek Vasut 2021-10-16  658  		/* The read_reg already contains suitable delay */
c6ac8f0b4ca927 Marek Vasut 2021-10-16  659  		error = priv->chip->read_reg(client, REG_IC_BUSY, &data, 1);
c6ac8f0b4ca927 Marek Vasut 2021-10-16  660  		if (error)
c6ac8f0b4ca927 Marek Vasut 2021-10-16  661  			return error;
c6ac8f0b4ca927 Marek Vasut 2021-10-16  662  		if (i++ == 100000)
c6ac8f0b4ca927 Marek Vasut 2021-10-16  663  			return -ETIMEDOUT;
c6ac8f0b4ca927 Marek Vasut 2021-10-16 @664  	} while (data != REG_IC_BUSY_NOT_BUSY);
c6ac8f0b4ca927 Marek Vasut 2021-10-16  665  
c6ac8f0b4ca927 Marek Vasut 2021-10-16  666  	return 0;
c6ac8f0b4ca927 Marek Vasut 2021-10-16  667  }
c6ac8f0b4ca927 Marek Vasut 2021-10-16  668  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org