Hello,
this patch killed the musb-host functionality on my classic Beagleboard
(rev c4). Symptom was that it there was a message I don't remember and
the attached device didn't enumerate anymore (likely because of missing
power, but I'm not sure).
A simple revert has fixed it, I haven't looked further into the problem.
Regards,
Alexander Holler
Am 31.07.2015 um 21:39 schrieb Greg Kroah-Hartman:
4.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: NeilBrown <n...@brown.name>
commit 4724e27114c4a7eceeee07db227a17fcab6f165c upstream.
The USB phy should initialize with power-off, and will be powered on
by the USB system when a cable connection is detected.
Having this pm_runtime_get_sync() during probe causes the phy to
*always* be powered on.
Removing it returns to sensible power management.
Fixes: 96be39ab34b77c6f6f5cd6ae03aac6c6449ee5c4
Signed-off-by: NeilBrown <n...@brown.name>
Signed-off-by: Kishon Vijay Abraham I <kis...@ti.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/phy/phy-twl4030-usb.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/phy/phy-twl4030-usb.c
+++ b/drivers/phy/phy-twl4030-usb.c
@@ -711,7 +711,6 @@ static int twl4030_usb_probe(struct plat
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, 2000);
pm_runtime_enable(&pdev->dev);
- pm_runtime_get_sync(&pdev->dev);
/* Our job is to use irqs and status from the power module
* to keep the transceiver disabled when nothing's connected.
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