* [xlnx:xlnx_rebase_v4.19 1546/1668] drivers/uio/uio_core.c:564:21: sparse: sparse: incorrect type in assignment (different base types)
@ 2019-10-01 4:58 kbuild test robot
0 siblings, 0 replies; only message in thread
From: kbuild test robot @ 2019-10-01 4:58 UTC (permalink / raw)
To: Alexandru Ardelean; +Cc: Michal Simek, kbuild-all, linux-arm-kernel
Hi Alexandru,
First bad commit (maybe != root cause):
tree: https://github.com/Xilinx/linux-xlnx xlnx_rebase_v4.19
head: 63166c634f2972b2e6949be0d5c998364af85fa8
commit: 46e491438385416be6dab43faa451e3755848cac [1546/1668] uio: rename uio.c -> uio_core.c & unify into uio.ko
reproduce:
# apt-get install sparse
# sparse version: v0.6.1-rc1-7-g2b96cd8-dirty
git checkout 46e491438385416be6dab43faa451e3755848cac
make ARCH=x86_64 allmodconfig
make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>)
>> drivers/uio/uio_core.c:564:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __poll_t [usertype] ret @@ got e] ret @@
>> drivers/uio/uio_core.c:564:21: sparse: expected restricted __poll_t [usertype] ret
>> drivers/uio/uio_core.c:564:21: sparse: got int
vim +564 drivers/uio/uio_core.c
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 555
afc9a42b7464f7 drivers/uio/uio.c Al Viro 2017-07-03 556 static __poll_t uio_poll(struct file *filep, poll_table *wait)
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 557 {
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 558 struct uio_listener *listener = filep->private_data;
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 559 struct uio_device *idev = listener->dev;
a93e7b33156822 drivers/uio/uio.c Hamish Martin 2018-05-14 560 __poll_t ret = 0;
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 561
543af5861f41af drivers/uio/uio.c Xiubo Li 2018-07-06 562 mutex_lock(&idev->info_lock);
a93e7b33156822 drivers/uio/uio.c Hamish Martin 2018-05-14 563 if (!idev->info || !idev->info->irq)
a93e7b33156822 drivers/uio/uio.c Hamish Martin 2018-05-14 @564 ret = -EIO;
543af5861f41af drivers/uio/uio.c Xiubo Li 2018-07-06 565 mutex_unlock(&idev->info_lock);
a93e7b33156822 drivers/uio/uio.c Hamish Martin 2018-05-14 566
a93e7b33156822 drivers/uio/uio.c Hamish Martin 2018-05-14 567 if (ret)
a93e7b33156822 drivers/uio/uio.c Hamish Martin 2018-05-14 568 return ret;
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 569
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 570 poll_wait(filep, &idev->wait, wait);
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 571 if (listener->event_count != atomic_read(&idev->event))
a9a08845e9acbd drivers/uio/uio.c Linus Torvalds 2018-02-11 572 return EPOLLIN | EPOLLRDNORM;
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 573 return 0;
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 574 }
beafc54c4e2fba drivers/uio/uio.c Hans J. Koch 2006-12-07 575
:::::: The code at line 564 was first introduced by commit
:::::: a93e7b331568227500186a465fee3c2cb5dffd1f uio: Prevent device destruction while fds are open
:::::: TO: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
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