Re: [PATCH 1/1] tty: i3c: add tty over i3c master support

From: kernel test robot <lkp@intel.com>
To: Frank Li <Frank.Li@nxp.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>,
	open list <linux-kernel@vger.kernel.org>,
	"open list:TTY LAYER AND SERIAL DRIVERS"
	<linux-serial@vger.kernel.org>
Cc: oe-kbuild-all@lists.linux.dev, alexandre.belloni@bootlin.com,
	conor.culhane@silvaco.com, imx@lists.linux.dev, joe@perches.com,
	linux-i3c@lists.infradead.org, miquel.raynal@bootlin.com
Subject: Re: [PATCH 1/1] tty: i3c: add tty over i3c master support
Date: Tue, 7 Nov 2023 04:22:44 +0800	[thread overview]
Message-ID: <202311070330.5mylauLR-lkp@intel.com> (raw)
In-Reply-To: <20231018211111.3437929-1-Frank.Li@nxp.com>

Hi Frank,

kernel test robot noticed the following build errors:

[auto build test ERROR on tty/tty-testing]
[also build test ERROR on tty/tty-next tty/tty-linus linus/master v6.6 next-20231106]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Frank-Li/tty-i3c-add-tty-over-i3c-master-support/20231019-051407
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
patch link:    https://lore.kernel.org/r/20231018211111.3437929-1-Frank.Li%40nxp.com
patch subject: [PATCH 1/1] tty: i3c: add tty over i3c master support
config: microblaze-allyesconfig (https://download.01.org/0day-ci/archive/20231107/202311070330.5mylauLR-lkp@intel.com/config)
compiler: microblaze-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231107/202311070330.5mylauLR-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311070330.5mylauLR-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/tty/i3c_tty.c: In function 'tty_i3c_rxwork':
>> drivers/tty/i3c_tty.c:265:26: error: 'struct i3c_priv_xfer' has no member named 'actual_len'
     265 |                 if (xfers.actual_len) {
         |                          ^
   drivers/tty/i3c_tty.c:266:82: error: 'struct i3c_priv_xfer' has no member named 'actual_len'
     266 |                         tty_insert_flip_string(&sport->port, sport->buffer, xfers.actual_len);
         |                                                                                  ^
>> drivers/tty/i3c_tty.c:271:25: error: implicit declaration of function 'i3c_device_getstatus_format1' [-Werror=implicit-function-declaration]
     271 |                         i3c_device_getstatus_format1(sport->i3cdev, &status);
         |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/tty/i3c_tty.c: At top level:
   drivers/tty/i3c_tty.c:400:6: warning: no previous prototype for 'i3c_remove' [-Wmissing-prototypes]
     400 | void i3c_remove(struct i3c_device *dev)
         |      ^~~~~~~~~~
   cc1: some warnings being treated as errors

vim +265 drivers/tty/i3c_tty.c

   246	
   247	static void tty_i3c_rxwork(struct work_struct *work)
   248	{
   249		struct ttyi3c_port *sport = container_of(work, struct ttyi3c_port, rxwork);
   250		struct i3c_priv_xfer xfers;
   251		int retry = I3C_TTY_RETRY;
   252		u16 status = BIT(0);
   253	
   254		do {
   255			memset(&xfers, 0, sizeof(xfers));
   256			xfers.data.in = sport->buffer;
   257			xfers.len = I3C_TTY_TRANS_SIZE;
   258			xfers.rnw = 1;
   259	
   260			if (I3C_TTY_RX_STOP & atomic_read(&sport->status))
   261				break;
   262	
   263			i3c_device_do_priv_xfers(sport->i3cdev, &xfers, 1);
   264	
 > 265			if (xfers.actual_len) {
   266				tty_insert_flip_string(&sport->port, sport->buffer, xfers.actual_len);
   267				retry = 20;
   268				continue;
   269			} else {
   270				status = BIT(0);
 > 271				i3c_device_getstatus_format1(sport->i3cdev, &status);
   272				/*
   273				 * Target side need some time to fill data into fifo. Target side may not
   274				 * have hardware update status in real time. Software update status always
   275				 * need some delays.
   276				 *
   277				 * Generally, target side have cicular buffer in memory, it will be moved
   278				 * into FIFO by CPU or DMA. 'status' just show if cicular buffer empty. But
   279				 * there are gap, espcially CPU have not response irq to fill FIFO in time.
   280				 * So xfers.actual will be zero, wait for little time to avoid flood
   281				 * transfer in i3c bus.
   282				 */
   283				usleep_range(I3C_TTY_YIELD_US, 10 * I3C_TTY_YIELD_US);
   284				retry--;
   285			}
   286	
   287		} while (retry && (status & BIT(0)));
   288	
   289		tty_flip_buffer_push(&sport->port);
   290	}
   291	

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