Hello, It looks like an unlock is needed before the return on line 562.
julia ---------- Forwarded message ---------- Date: Fri, 19 Oct 2018 18:12:04 +0800 From: kbuild test robot <[email protected]> To: [email protected] Cc: Julia Lawall <[email protected]> Subject: Re: [PATCH 2/2] tty: serial: add driver for the SiFive UART CC: [email protected] In-Reply-To: <[email protected]> References: <[email protected]> TO: Paul Walmsley <[email protected]> CC: [email protected] CC: Paul Walmsley <[email protected]>, Greg Kroah-Hartman <[email protected]>, Jiri Slaby <[email protected]>, Palmer Dabbelt <[email protected]>, Wesley Terpstra <[email protected]>, [email protected], [email protected], Paul Walmsley <[email protected]> Hi Paul, I love your patch! Perhaps something to improve: [auto build test WARNING on tty/tty-testing] [also build test WARNING on v4.19-rc8 next-20181019] [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/Paul-Walmsley/dt-bindings-serial-add-documentation-for-the-SiFive-UART-driver/20181019-165529 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing :::::: branch date: 77 minutes ago :::::: commit date: 77 minutes ago >> drivers/tty/serial/sifive.c:562:2-8: preceding lock on line 558 # https://github.com/0day-ci/linux/commit/15d0af7ab79ba53f984613f23e668cade495babb git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 15d0af7ab79ba53f984613f23e668cade495babb vim +562 drivers/tty/serial/sifive.c 15d0af7a Paul Walmsley 2018-10-18 552 15d0af7a Paul Walmsley 2018-10-18 553 static irqreturn_t sifive_serial_irq(int irq, void *dev_id) 15d0af7a Paul Walmsley 2018-10-18 554 { 15d0af7a Paul Walmsley 2018-10-18 555 struct sifive_serial_port *ssp = dev_id; 15d0af7a Paul Walmsley 2018-10-18 556 u32 ip; 15d0af7a Paul Walmsley 2018-10-18 557 15d0af7a Paul Walmsley 2018-10-18 @558 spin_lock(&ssp->port.lock); 15d0af7a Paul Walmsley 2018-10-18 559 15d0af7a Paul Walmsley 2018-10-18 560 ip = __ssp_readl(ssp, SIFIVE_SERIAL_IP_OFFS); 15d0af7a Paul Walmsley 2018-10-18 561 if (!ip) 15d0af7a Paul Walmsley 2018-10-18 @562 return IRQ_NONE; 15d0af7a Paul Walmsley 2018-10-18 563 15d0af7a Paul Walmsley 2018-10-18 564 if (ip & SIFIVE_SERIAL_IP_RXWM_MASK) 15d0af7a Paul Walmsley 2018-10-18 565 __ssp_receive_chars(ssp); 15d0af7a Paul Walmsley 2018-10-18 566 if (ip & SIFIVE_SERIAL_IP_TXWM_MASK) 15d0af7a Paul Walmsley 2018-10-18 567 __ssp_transmit_chars(ssp); 15d0af7a Paul Walmsley 2018-10-18 568 15d0af7a Paul Walmsley 2018-10-18 569 spin_unlock(&ssp->port.lock); 15d0af7a Paul Walmsley 2018-10-18 570 15d0af7a Paul Walmsley 2018-10-18 571 return IRQ_HANDLED; 15d0af7a Paul Walmsley 2018-10-18 572 } 15d0af7a Paul Walmsley 2018-10-18 573 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
