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Subject[jirislaby:devel 21/33] drivers/tty/mxser.c:826:15: error: use of undeclared identifier 'port'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel
head: d61595c5423534810c1a3c0d4a88dd2fd81d750c
commit: 5726d981962bcf45daa931de98923a2aab063487 [21/33] mxser: switch to uart_driver
config: i386-randconfig-a013-20211214 (https://download.01.org/0day-ci/archive/20211216/202112160704.5dKPWYFQ-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dd245bab9fbb364faa1581e4f92ba3119a872fba)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git/commit/?id=5726d981962bcf45daa931de98923a2aab063487
git remote add jirislaby https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git
git fetch --no-tags jirislaby devel
git checkout 5726d981962bcf45daa931de98923a2aab063487
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

>> drivers/tty/mxser.c:826:15: error: use of undeclared identifier 'port'
kfifo_reset(&port->xmit_fifo);
^
>> drivers/tty/mxser.c:826:15: error: use of undeclared identifier 'port'
2 errors generated.


vim +/port +826 drivers/tty/mxser.c

ee7e5e66f2d4fa drivers/tty/mxser.c Jiri Slaby 2021-09-22 763
5726d981962bcf drivers/tty/mxser.c Jiri Slaby 2021-12-01 764 static int mxser_startup(struct uart_port *uport)
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 765 {
5726d981962bcf drivers/tty/mxser.c Jiri Slaby 2021-12-01 766 struct mxser_port *info = to_mport(uport);
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 767 unsigned long flags;
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 768
22d394f9712b7c drivers/tty/mxser.c Jiri Slaby 2021-12-10 769 spin_lock_irqsave(&uport->lock, flags);
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 770
e13da5a8a148c0 drivers/tty/mxser.c Jiri Slaby 2021-12-10 771 if (!uport->type) {
22d394f9712b7c drivers/tty/mxser.c Jiri Slaby 2021-12-10 772 spin_unlock_irqrestore(&uport->lock, flags);
5726d981962bcf drivers/tty/mxser.c Jiri Slaby 2021-12-01 773 return -EINVAL;
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 774 }
94c7e3efe3b70b drivers/tty/mxser.c Jiri Slaby 2021-12-15 775
5726d981962bcf drivers/tty/mxser.c Jiri Slaby 2021-12-01 776 BUG_ON("we use kfifo");
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 777
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 778 /*
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 779 * Clear the FIFO buffers and disable them
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 780 * (they will be reenabled in mxser_change_speed())
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 781 */
ee7e5e66f2d4fa drivers/tty/mxser.c Jiri Slaby 2021-09-22 782 mxser_disable_and_clear_FIFO(info);
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 783
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 784 /*
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 785 * At this point there's no way the LSR could still be 0xFF;
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 786 * if it is, then bail out, because there's likely no UART
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 787 * here.
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 788 */
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 789 if (inb(uport->iobase + UART_LSR) == 0xff) {
22d394f9712b7c drivers/tty/mxser.c Jiri Slaby 2021-12-10 790 spin_unlock_irqrestore(&uport->lock, flags);
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 791 return -ENODEV;
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 792 }
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 793
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 794 /*
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 795 * Clear the interrupt registers.
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 796 */
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 797 (void) inb(uport->iobase + UART_LSR);
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 798 (void) inb(uport->iobase + UART_RX);
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 799 (void) inb(uport->iobase + UART_IIR);
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 800 (void) inb(uport->iobase + UART_MSR);
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 801
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 802 /*
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 803 * Now, initialize the UART
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 804 */
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 805 outb(UART_LCR_WLEN8, uport->iobase + UART_LCR); /* reset DLAB */
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 806 info->MCR = UART_MCR_DTR | UART_MCR_RTS;
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 807 outb(info->MCR, uport->iobase + UART_MCR);
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 808
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 809 /*
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 810 * Finally, enable interrupts
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 811 */
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 812 info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 813
292955a7c011e2 drivers/tty/mxser.c Jiri Slaby 2021-06-18 814 if (info->board->must_hwid)
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 815 info->IER |= MOXA_MUST_IER_EGDAI;
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 816 outb(info->IER, uport->iobase + UART_IER); /* enable interrupts */
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 817
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 818 /*
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 819 * And clear the interrupt registers again for luck.
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 820 */
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 821 (void) inb(uport->iobase + UART_LSR);
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 822 (void) inb(uport->iobase + UART_RX);
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 823 (void) inb(uport->iobase + UART_IIR);
ea78327711f406 drivers/tty/mxser.c Jiri Slaby 2021-12-10 824 (void) inb(uport->iobase + UART_MSR);
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 825
94c7e3efe3b70b drivers/tty/mxser.c Jiri Slaby 2021-12-15 @826 kfifo_reset(&port->xmit_fifo);
22d394f9712b7c drivers/tty/mxser.c Jiri Slaby 2021-12-10 827 spin_unlock_irqrestore(&uport->lock, flags);
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 828
1c45607ad3eb73 drivers/char/mxser.c Jiri Slaby 2008-02-07 829 return 0;
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 830 }
^1da177e4c3f41 drivers/char/mxser.c Linus Torvalds 2005-04-16 831

:::::: The code at line 826 was first introduced by commit
:::::: 94c7e3efe3b70b291054ac2344013c35b314ffe6 mxser: switch from xmit_buf to kfifo

:::::: TO: Jiri Slaby <jslaby@suse.cz>
:::::: CC: Jiri Slaby <jslaby@suse.cz>

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

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