Hello.
On 03-05-2012 10:04, Neil Zhang wrote:
The Android gadget has sysfs interface to configure usb gadget.
And it may access udc driver when there is no cable attached.
That is too say,
s/too/to/
> the udc controller may in clock off status.
May be?
It will cause system hang when access udc controller's register at this
time.
Change-Id: Ib8783b725f5f57323499d23bc891c6f9a07b5e8d
Remove this please -- it has no place in an upstream commit.
Signed-off-by: Neil Zhang<zhangwm@xxxxxxxxxxx>
---
drivers/usb/gadget/mv_udc_core.c | 12 +++++++++++-
1 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index 771ef45..067cf65 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -2333,6 +2339,11 @@ usb_reg_show(struct device *dev, struct device_attribute *attr, char *buf)
return -1;
}
+ if (!udc->active) {
+ ret = sprintf(buf, "The controller is clock off now.\n");
Clocked?
WBR, Sergei
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