OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Bluetooth: hci_bcm: Handle deferred probing for the clock supply 

On some systems that actually have the bluetooth controller wired up
with an extra clock signal, it's possible the bluetooth controller
probes before the clock provider. clk_get would return a defer probe
error, which was not handled by this driver.

Handle this properly, so that these systems can work reliably.

Tested-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Chen-Yu Tsai 2018-12-17 12:04:39 +08:00 committed by Marcel Holtmann
parent 31f20f5f6d
commit 28ac03b9ac
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/bluetooth/hci_bcm.c
View File

@ -907,6 +907,10 @@ static int bcm_get_resources(struct bcm_device *dev)
dev->clk = devm_clk_get(dev->dev, NULL);
/* Handle deferred probing */
if (dev->clk == ERR_PTR(-EPROBE_DEFER))
return PTR_ERR(dev->clk);
dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup",
GPIOD_OUT_LOW);
if (IS_ERR(dev->device_wakeup))