Hi Sergey, url: https://github.com/0day-ci/linux/commits/Sergey-Shtylyov/Refactor-the-accessors-for-the-ATA-device-control-and-alternate-status-registers/20220213-231119 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git b81b1829e7e39f6cebdf6e4d5484eacbceda8554 config: riscv-randconfig-m031-20220213 (https://download.01.org/0day-ci/archive/20220214/202202141714.X7UdMJUj-lkp@xxxxxxxxx/config) compiler: riscv32-linux-gcc (GCC) 11.2.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> smatch warnings: drivers/ata/libata-sff.c:1652 ata_sff_lost_interrupt() error: uninitialized symbol 'status'. vim +/status +1652 drivers/ata/libata-sff.c c96f1732e25362 Alan Cox 2009-03-24 1635 void ata_sff_lost_interrupt(struct ata_port *ap) c96f1732e25362 Alan Cox 2009-03-24 1636 { c96f1732e25362 Alan Cox 2009-03-24 1637 u8 status; c96f1732e25362 Alan Cox 2009-03-24 1638 struct ata_queued_cmd *qc; c96f1732e25362 Alan Cox 2009-03-24 1639 c96f1732e25362 Alan Cox 2009-03-24 1640 /* Only one outstanding command per SFF channel */ c96f1732e25362 Alan Cox 2009-03-24 1641 qc = ata_qc_from_tag(ap, ap->link.active_tag); 3e4ec3443f70fb Tejun Heo 2010-05-10 1642 /* We cannot lose an interrupt on a non-existent or polled command */ 3e4ec3443f70fb Tejun Heo 2010-05-10 1643 if (!qc || qc->tf.flags & ATA_TFLAG_POLLING) c96f1732e25362 Alan Cox 2009-03-24 1644 return; c96f1732e25362 Alan Cox 2009-03-24 1645 /* See if the controller thinks it is still busy - if so the command c96f1732e25362 Alan Cox 2009-03-24 1646 isn't a lost IRQ but is still in progress */ 57232468aca7de Sergey Shtylyov 2022-02-13 1647 if (ata_sff_altstatus(ap, &status) && (status & ATA_BUSY)) "status" is not intialized if ata_sff_altstatus() return false. c96f1732e25362 Alan Cox 2009-03-24 1648 return; c96f1732e25362 Alan Cox 2009-03-24 1649 c96f1732e25362 Alan Cox 2009-03-24 1650 /* There was a command running, we are no longer busy and we have c96f1732e25362 Alan Cox 2009-03-24 1651 no interrupt. */ a9a79dfec23956 Joe Perches 2011-04-15 @1652 ata_port_warn(ap, "lost interrupt (Status 0x%x)\n", c96f1732e25362 Alan Cox 2009-03-24 1653 status); ^^^^^^ Uninitalized. Also the indenting is unfortunate. c96f1732e25362 Alan Cox 2009-03-24 1654 /* Run the host interrupt logic as if the interrupt had not been c96f1732e25362 Alan Cox 2009-03-24 1655 lost */ c3b2889424c26f Tejun Heo 2010-05-19 1656 ata_sff_port_intr(ap, qc); c96f1732e25362 Alan Cox 2009-03-24 1657 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
