Hi Manivannan, I love your patch! Perhaps something to improve: [auto build test WARNING on robh/for-next] [also build test WARNING on v4.20-rc3 next-20181123] [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/Manivannan-Sadhasivam/Add-initial-RDA8810PL-SoC-and-Orange-Pi-boards-support/20181123-125507 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: x86_64-allmodconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): >> drivers/tty/serial/rda-uart.c:619:28: warning: context imbalance in 'rda_uart_port_write' - unexpected unlock vim +/rda_uart_port_write +619 drivers/tty/serial/rda-uart.c efb19753 Manivannan Sadhasivam 2018-11-21 588 efb19753 Manivannan Sadhasivam 2018-11-21 589 static void rda_uart_port_write(struct uart_port *port, const char *s, efb19753 Manivannan Sadhasivam 2018-11-21 590 u_int count) efb19753 Manivannan Sadhasivam 2018-11-21 591 { efb19753 Manivannan Sadhasivam 2018-11-21 592 u32 old_irq_mask; efb19753 Manivannan Sadhasivam 2018-11-21 593 unsigned long flags; efb19753 Manivannan Sadhasivam 2018-11-21 594 int locked; efb19753 Manivannan Sadhasivam 2018-11-21 595 efb19753 Manivannan Sadhasivam 2018-11-21 596 local_irq_save(flags); efb19753 Manivannan Sadhasivam 2018-11-21 597 efb19753 Manivannan Sadhasivam 2018-11-21 598 if (port->sysrq) { efb19753 Manivannan Sadhasivam 2018-11-21 599 locked = 0; efb19753 Manivannan Sadhasivam 2018-11-21 600 } else if (oops_in_progress) { efb19753 Manivannan Sadhasivam 2018-11-21 601 locked = spin_trylock(&port->lock); efb19753 Manivannan Sadhasivam 2018-11-21 602 } else { efb19753 Manivannan Sadhasivam 2018-11-21 603 spin_lock(&port->lock); efb19753 Manivannan Sadhasivam 2018-11-21 604 locked = 1; efb19753 Manivannan Sadhasivam 2018-11-21 605 } efb19753 Manivannan Sadhasivam 2018-11-21 606 efb19753 Manivannan Sadhasivam 2018-11-21 607 old_irq_mask = rda_uart_read(port, RDA_UART_IRQ_MASK); efb19753 Manivannan Sadhasivam 2018-11-21 608 rda_uart_write(port, 0, RDA_UART_IRQ_MASK); efb19753 Manivannan Sadhasivam 2018-11-21 609 efb19753 Manivannan Sadhasivam 2018-11-21 610 uart_console_write(port, s, count, rda_console_putchar); efb19753 Manivannan Sadhasivam 2018-11-21 611 efb19753 Manivannan Sadhasivam 2018-11-21 612 /* wait until all contents have been sent out */ efb19753 Manivannan Sadhasivam 2018-11-21 613 while (!(rda_uart_read(port, RDA_UART_STATUS) & RDA_UART_TX_FIFO_MASK)) efb19753 Manivannan Sadhasivam 2018-11-21 614 cpu_relax(); efb19753 Manivannan Sadhasivam 2018-11-21 615 efb19753 Manivannan Sadhasivam 2018-11-21 616 rda_uart_write(port, old_irq_mask, RDA_UART_IRQ_MASK); efb19753 Manivannan Sadhasivam 2018-11-21 617 efb19753 Manivannan Sadhasivam 2018-11-21 618 if (locked) efb19753 Manivannan Sadhasivam 2018-11-21 @619 spin_unlock(&port->lock); efb19753 Manivannan Sadhasivam 2018-11-21 620 efb19753 Manivannan Sadhasivam 2018-11-21 621 local_irq_restore(flags); efb19753 Manivannan Sadhasivam 2018-11-21 622 } efb19753 Manivannan Sadhasivam 2018-11-21 623 :::::: The code at line 619 was first introduced by commit :::::: efb197538a7e148635e096850a818e3b29b1c4b2 tty: serial: Add RDA8810PL UART driver :::::: TO: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> :::::: CC: 0day robot <lkp@xxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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