* [bluetooth-next:master 15/15] drivers/bluetooth/btmtkuart.c:671:18: sparse: warning: incorrect type in assignment (different base types)
@ 2019-03-03 1:09 kbuild test robot
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From: kbuild test robot @ 2019-03-03 1:09 UTC (permalink / raw)
To: Sean Wang; +Cc: kbuild-all, linux-bluetooth, Marcel Holtmann
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master
head: 22eaf6c9946ae269061d95bb9ceee02524166474
commit: 22eaf6c9946ae269061d95bb9ceee02524166474 [15/15] Bluetooth: mediatek: add support for MediaTek MT7663U and MT7668U UART devices
reproduce:
# apt-get install sparse
git checkout 22eaf6c9946ae269061d95bb9ceee02524166474
make ARCH=x86_64 allmodconfig
make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'
All warnings (new ones prefixed by >>):
>> drivers/bluetooth/btmtkuart.c:671:18: sparse: warning: incorrect type in assignment (different base types)
drivers/bluetooth/btmtkuart.c:671:18: sparse: expected unsigned int [usertype] baudrate
drivers/bluetooth/btmtkuart.c:671:18: sparse: got restricted __le32 [usertype]
sparse warnings: (new ones prefixed by >>)
drivers/bluetooth/btmtkuart.c:671:18: sparse: warning: incorrect type in assignment (different base types)
>> drivers/bluetooth/btmtkuart.c:671:18: sparse: expected unsigned int [usertype] baudrate
>> drivers/bluetooth/btmtkuart.c:671:18: sparse: got restricted __le32 [usertype]
vim +671 drivers/bluetooth/btmtkuart.c
659
660 static int btmtkuart_change_baudrate(struct hci_dev *hdev)
661 {
662 struct btmtkuart_dev *bdev = hci_get_drvdata(hdev);
663 struct btmtk_hci_wmt_params wmt_params;
664 u32 baudrate;
665 u8 param;
666 int err;
667
668 /* Indicate the device to enter the probe state the host is
669 * ready to change a new baudrate.
670 */
> 671 baudrate = cpu_to_le32(bdev->desired_speed);
672 wmt_params.op = MTK_WMT_HIF;
673 wmt_params.flag = 1;
674 wmt_params.dlen = 4;
675 wmt_params.data = &baudrate;
676 wmt_params.status = NULL;
677
678 err = mtk_hci_wmt_sync(hdev, &wmt_params);
679 if (err < 0) {
680 bt_dev_err(hdev, "Failed to device baudrate (%d)", err);
681 return err;
682 }
683
684 err = serdev_device_set_baudrate(bdev->serdev,
685 bdev->desired_speed);
686 if (err < 0) {
687 bt_dev_err(hdev, "Failed to set up host baudrate (%d)",
688 err);
689 return err;
690 }
691
692 serdev_device_set_flow_control(bdev->serdev, false);
693
694 /* Send a dummy byte 0xff to activate the new baudrate */
695 param = 0xff;
696 err = serdev_device_write(bdev->serdev, ¶m, sizeof(param),
697 MAX_SCHEDULE_TIMEOUT);
698 if (err < 0 || err < sizeof(param))
699 return err;
700
701 serdev_device_wait_until_sent(bdev->serdev, 0);
702
703 /* Wait some time for the device changing baudrate done */
704 usleep_range(20000, 22000);
705
706 /* Test the new baudrate */
707 wmt_params.op = MTK_WMT_TEST;
708 wmt_params.flag = 7;
709 wmt_params.dlen = 0;
710 wmt_params.data = NULL;
711 wmt_params.status = NULL;
712
713 err = mtk_hci_wmt_sync(hdev, &wmt_params);
714 if (err < 0) {
715 bt_dev_err(hdev, "Failed to test new baudrate (%d)",
716 err);
717 return err;
718 }
719
720 bdev->curr_speed = bdev->desired_speed;
721
722 return 0;
723 }
724
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