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Bluetooth: hci_qca: fix debugfs registration 

Since commit 3e4be65eb8 ("Bluetooth: hci_qca: Add poweroff support
during hci down for wcn3990"), the setup callback which registers the
debugfs interface can be called multiple times.

This specifically leads to the following error when powering on the
controller:

	debugfs: Directory 'ibs' with parent 'hci0' already present!

Add a driver flag to avoid trying to register the debugfs interface more
than once.

Fixes: 3e4be65eb8 ("Bluetooth: hci_qca: Add poweroff support during hci down for wcn3990")
Cc: stable@vger.kernel.org	# 4.20
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Johan Hovold 2023-05-31 10:57:59 +02:00 committed by Luiz Augusto von Dentz
parent fe2ccc6c29
commit 47c5d829a3
1 changed files with 5 additions and 1 deletions
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6
drivers/bluetooth/hci_qca.c
View File

@ -78,7 +78,8 @@ enum qca_flags {
QCA_HW_ERROR_EVENT,
QCA_SSR_TRIGGERED,
QCA_BT_OFF,
QCA_ROM_FW
QCA_ROM_FW,
QCA_DEBUGFS_CREATED,
};
enum qca_capabilities {
@ -635,6 +636,9 @@ static void qca_debugfs_init(struct hci_dev *hdev)
if (!hdev->debugfs)
return;
if (test_and_set_bit(QCA_DEBUGFS_CREATED, &qca->flags))
return;
ibs_dir = debugfs_create_dir("ibs", hdev->debugfs);
/* read only */