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| author | Jack Pham <jackp@codeaurora.org> | 2016-01-29 11:46:05 -0800 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:06:41 -0700 |
| commit | b0b1bb59407262e425fcb5a95f7df72a156c99ab (patch) | |
| tree | 43567fd34e95e182ce61bbf59a84bd16c40e0349 /include/linux/flex_array.h | |
| parent | c6d80a92b79d6b50129a27e8747c5a490da367e3 (diff) | |
usb: dwc3: gadget: Resolve recursive spinlock during remote wakeup
When a USB function wishes to send new data during USB suspend state, it
needs to issue USB remote wakeup and send a function wakeup notification
after then. This scenario leads to recursive spin locking inside the
_usb_func_wakeup() function, because this function gets called recursively.
This function issues remote wakeup, which internally calls the resume
interrupt callback, which calls the _usb_func_wakeup() function again.
This issue is resolved by performing the remote wakeup in a deferred work
context, and this splits the recursion loop.
CRs-fixed: 700667
Change-Id: I59c8efde098781587d29f08cd60e4aa3521949d8
Signed-off-by: Danny Segal <dsegal@codeaurora.org>
Diffstat (limited to 'include/linux/flex_array.h')
0 files changed, 0 insertions, 0 deletions