CC: kbuild-...@lists.01.org CC: linux-ker...@vger.kernel.org TO: William Breathitt Gray <vilhelm.g...@gmail.com> CC: Jonathan Cameron <jonathan.came...@huawei.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 5472f14a37421d1bca3dddf33cabd3bd6dbefbbc commit: b6c50affda5957a3629b149a91c7f6688ffce7f7 counter: Add character device interface date: 8 weeks ago :::::: branch date: 12 hours ago :::::: commit date: 8 weeks ago config: i386-randconfig-m021-20211207 (https://download.01.org/0day-ci/archive/20211214/202112141815.ouncbx3s-...@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> Reported-by: Dan Carpenter <dan.carpen...@oracle.com> New smatch warnings: drivers/counter/counter-chrdev.c:91 counter_chrdev_read() error: uninitialized symbol 'copied'. Old smatch warnings: drivers/counter/counter-chrdev.c:488 counter_get_data() error: uninitialized symbol 'ret'. drivers/counter/counter-chrdev.c:507 counter_get_data() error: uninitialized symbol 'ret'. vim +/copied +91 drivers/counter/counter-chrdev.c b6c50affda5957 William Breathitt Gray 2021-09-29 33 b6c50affda5957 William Breathitt Gray 2021-09-29 34 #define counter_comp_read_is_equal(a, b) \ b6c50affda5957 William Breathitt Gray 2021-09-29 35 (a.action_read == b.action_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 36 a.device_u8_read == b.device_u8_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 37 a.count_u8_read == b.count_u8_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 38 a.signal_u8_read == b.signal_u8_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 39 a.device_u32_read == b.device_u32_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 40 a.count_u32_read == b.count_u32_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 41 a.signal_u32_read == b.signal_u32_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 42 a.device_u64_read == b.device_u64_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 43 a.count_u64_read == b.count_u64_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 44 a.signal_u64_read == b.signal_u64_read) b6c50affda5957 William Breathitt Gray 2021-09-29 45 b6c50affda5957 William Breathitt Gray 2021-09-29 46 #define counter_comp_read_is_set(comp) \ b6c50affda5957 William Breathitt Gray 2021-09-29 47 (comp.action_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 48 comp.device_u8_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 49 comp.count_u8_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 50 comp.signal_u8_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 51 comp.device_u32_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 52 comp.count_u32_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 53 comp.signal_u32_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 54 comp.device_u64_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 55 comp.count_u64_read || \ b6c50affda5957 William Breathitt Gray 2021-09-29 56 comp.signal_u64_read) b6c50affda5957 William Breathitt Gray 2021-09-29 57 b6c50affda5957 William Breathitt Gray 2021-09-29 58 static ssize_t counter_chrdev_read(struct file *filp, char __user *buf, b6c50affda5957 William Breathitt Gray 2021-09-29 59 size_t len, loff_t *f_ps) b6c50affda5957 William Breathitt Gray 2021-09-29 60 { b6c50affda5957 William Breathitt Gray 2021-09-29 61 struct counter_device *const counter = filp->private_data; b6c50affda5957 William Breathitt Gray 2021-09-29 62 int err; b6c50affda5957 William Breathitt Gray 2021-09-29 63 unsigned int copied; b6c50affda5957 William Breathitt Gray 2021-09-29 64 b6c50affda5957 William Breathitt Gray 2021-09-29 65 if (!counter->ops) b6c50affda5957 William Breathitt Gray 2021-09-29 66 return -ENODEV; b6c50affda5957 William Breathitt Gray 2021-09-29 67 b6c50affda5957 William Breathitt Gray 2021-09-29 68 if (len < sizeof(struct counter_event)) b6c50affda5957 William Breathitt Gray 2021-09-29 69 return -EINVAL; b6c50affda5957 William Breathitt Gray 2021-09-29 70 b6c50affda5957 William Breathitt Gray 2021-09-29 71 do { b6c50affda5957 William Breathitt Gray 2021-09-29 72 if (kfifo_is_empty(&counter->events)) { b6c50affda5957 William Breathitt Gray 2021-09-29 73 if (filp->f_flags & O_NONBLOCK) b6c50affda5957 William Breathitt Gray 2021-09-29 74 return -EAGAIN; b6c50affda5957 William Breathitt Gray 2021-09-29 75 b6c50affda5957 William Breathitt Gray 2021-09-29 76 err = wait_event_interruptible(counter->events_wait, b6c50affda5957 William Breathitt Gray 2021-09-29 77 !kfifo_is_empty(&counter->events) || b6c50affda5957 William Breathitt Gray 2021-09-29 78 !counter->ops); b6c50affda5957 William Breathitt Gray 2021-09-29 79 if (err < 0) b6c50affda5957 William Breathitt Gray 2021-09-29 80 return err; b6c50affda5957 William Breathitt Gray 2021-09-29 81 if (!counter->ops) b6c50affda5957 William Breathitt Gray 2021-09-29 82 return -ENODEV; b6c50affda5957 William Breathitt Gray 2021-09-29 83 } b6c50affda5957 William Breathitt Gray 2021-09-29 84 b6c50affda5957 William Breathitt Gray 2021-09-29 85 if (mutex_lock_interruptible(&counter->events_lock)) b6c50affda5957 William Breathitt Gray 2021-09-29 86 return -ERESTARTSYS; b6c50affda5957 William Breathitt Gray 2021-09-29 87 err = kfifo_to_user(&counter->events, buf, len, &copied); b6c50affda5957 William Breathitt Gray 2021-09-29 88 mutex_unlock(&counter->events_lock); b6c50affda5957 William Breathitt Gray 2021-09-29 89 if (err < 0) b6c50affda5957 William Breathitt Gray 2021-09-29 90 return err; b6c50affda5957 William Breathitt Gray 2021-09-29 @91 } while (!copied); b6c50affda5957 William Breathitt Gray 2021-09-29 92 b6c50affda5957 William Breathitt Gray 2021-09-29 93 return copied; b6c50affda5957 William Breathitt Gray 2021-09-29 94 } b6c50affda5957 William Breathitt Gray 2021-09-29 95 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org _______________________________________________ kbuild mailing list -- kbuild@lists.01.org To unsubscribe send an email to kbuild-le...@lists.01.org
