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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-14 16:39:47 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-14 16:39:47 +0100 |
| commit | b7d91c915290ab0bfbab84a0fb9c9eae57816982 (patch) | |
| tree | 75c1d0e53e297f6bd1eae2c04ed463a8f603b5cd /drivers/media/usb/dvb-usb/dvb-usb.h | |
| parent | f2ed287bcc9073d8edbf6561c389b282163edc78 (diff) | |
| parent | a25f0944ba9b1d8a6813fd6f1a86f1bd59ac25a6 (diff) | |
| download | linux-b7d91c915290ab0bfbab84a0fb9c9eae57816982.tar.bz2 | |
Merge 4.9-rc5 into char-misc-next
We want those fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/media/usb/dvb-usb/dvb-usb.h')
| -rw-r--r-- | drivers/media/usb/dvb-usb/dvb-usb.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/media/usb/dvb-usb/dvb-usb.h b/drivers/media/usb/dvb-usb/dvb-usb.h index 639c4678c65b..107255b08b2b 100644 --- a/drivers/media/usb/dvb-usb/dvb-usb.h +++ b/drivers/media/usb/dvb-usb/dvb-usb.h @@ -404,8 +404,12 @@ struct dvb_usb_adapter { * Powered is in/decremented for each call to modify the state. * @udev: pointer to the device's struct usb_device. * - * @usb_mutex: semaphore of USB control messages (reading needs two messages) - * @i2c_mutex: semaphore for i2c-transfers + * @data_mutex: mutex to protect the data structure used to store URB data + * @usb_mutex: mutex of USB control messages (reading needs two messages). + * Please notice that this mutex is used internally at the generic + * URB control functions. So, drivers using dvb_usb_generic_rw() and + * derivated functions should not lock it internally. + * @i2c_mutex: mutex for i2c-transfers * * @i2c_adap: device's i2c_adapter if it uses I2CoverUSB * @@ -433,6 +437,7 @@ struct dvb_usb_device { int powered; /* locking */ + struct mutex data_mutex; struct mutex usb_mutex; /* i2c */ |