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| author | Bjørn Mork <bjorn@mork.no> | 2014-03-17 16:25:18 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-18 15:32:32 -0400 |
| commit | ff0992e9036e9810e7cd45234fa32ca1e79750e2 (patch) | |
| tree | 92187e84bf62c3d9f6c8f474427dc0b94cd90af3 /include | |
| parent | e367c2d03dba4c9bcafad24688fadb79dd95b218 (diff) | |
| download | linux-ff0992e9036e9810e7cd45234fa32ca1e79750e2.tar.bz2 | |
net: cdc_ncm: fix control message ordering
This is a context modified revert of commit 6a9612e2cb22
("net: cdc_ncm: remove ncm_parm field") which introduced
a NCM specification violation, causing setup errors for
some devices. These errors resulted in the device and
host disagreeing about shared settings, with complete
failure to communicate as the end result.
The NCM specification require that many of the NCM specific
control reuests are sent only while the NCM Data Interface
is in alternate setting 0. Reverting the commit ensures that
we follow this requirement.
Fixes: 6a9612e2cb22 ("net: cdc_ncm: remove ncm_parm field")
Reported-and-tested-by: Pasi Kärkkäinen <pasik@iki.fi>
Reported-by: Thomas Schäfer <tschaefer@t-online.de>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/usb/cdc_ncm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/usb/cdc_ncm.h b/include/linux/usb/cdc_ncm.h index c3fa80745996..2c14d9cdd57a 100644 --- a/include/linux/usb/cdc_ncm.h +++ b/include/linux/usb/cdc_ncm.h @@ -88,6 +88,7 @@ #define cdc_ncm_data_intf_is_mbim(x) ((x)->desc.bInterfaceProtocol == USB_CDC_MBIM_PROTO_NTB) struct cdc_ncm_ctx { + struct usb_cdc_ncm_ntb_parameters ncm_parm; struct hrtimer tx_timer; struct tasklet_struct bh; |