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| author | Linyu Yuan <linyyuan@codeaurora.org> | 2021-06-29 03:51:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-21 09:47:32 +0200 |
| commit | 40edb52298df4c1dbbdb30b19e3ce92cf612a918 (patch) | |
| tree | 9ec26332f5b23181bcf315b7e01f2909cdfe3d09 /drivers/usb/dwc3/core.h | |
| parent | usb: max-3421: Prevent corruption of freed memory (diff) | |
| download | linux-40edb52298df4c1dbbdb30b19e3ce92cf612a918.tar.xz linux-40edb52298df4c1dbbdb30b19e3ce92cf612a918.zip | |
usb: dwc3: avoid NULL access of usb_gadget_driver
we found crash in dwc3_disconnect_gadget(),
it is because dwc->gadget_driver become NULL before async access.
7dc0c55e9f30 ('USB: UDC core: Add udc_async_callbacks gadget op')
suggest a common way to avoid such kind of issue.
this change implment the callback in dwc3 and
change related functions which have callback to usb gadget driver.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Linyu Yuan <linyyuan@codeaurora.org>
Link: https://lore.kernel.org/r/20210629015118.7944-1-linyyuan@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/core.h')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index dccdf13b5f9e..5991766239ba 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -1279,6 +1279,7 @@ struct dwc3 { unsigned dis_metastability_quirk:1; unsigned dis_split_quirk:1; + unsigned async_callbacks:1; u16 imod_interval; }; |