Hi Jarkko,

I love your patch! Yet something to improve:

[auto build test ERROR on jss-tpmdd/next]
[cannot apply to v5.3 next-20190915]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Jarkko-Sakkinen/tpm-Fix-tpm_send-length-calculation/20190916-162814
base:   git://git.infradead.org/users/jjs/linux-tpmdd next
config: x86_64-randconfig-a004-201937 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-11) 7.4.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/char/tpm/tpm-interface.c: In function 'tpm_send':
>> drivers/char/tpm/tpm-interface.c:366:5: error: 'struct tpm_buf' has no member named 'length'
     buf.length = buflen;
        ^

vim +366 drivers/char/tpm/tpm-interface.c

   343	
   344	/**
   345	 * tpm_send - send a TPM command
   346	 * @chip:	a &struct tpm_chip instance, %NULL for the default chip
   347	 * @cmd:	a TPM command buffer
   348	 * @buflen:	the length of the TPM command buffer
   349	 *
   350	 * Return: same as with tpm_transmit_cmd()
   351	 */
   352	int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen)
   353	{
   354		struct tpm_buf buf;
   355		int rc;
   356	
   357		chip = tpm_find_get_ops(chip);
   358		if (!chip)
   359			return -ENODEV;
   360	
   361		rc = tpm_buf_init(&buf, 0, 0);
   362		if (rc)
   363			goto out;
   364	
   365		memcpy(buf.data, cmd, buflen);
 > 366		buf.length = buflen;
   367	
   368		rc = tpm_transmit_cmd(chip, &buf, 0, "attempting to a send a command");
   369		tpm_buf_destroy(&buf);
   370	out:
   371		tpm_put_ops(chip);
   372		return rc;
   373	}
   374	EXPORT_SYMBOL_GPL(tpm_send);
   375	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation