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| author |   Enrico Mioso <mrkiko.rs@gmail.com> | 2017-07-11 17:21:52 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-07-14 08:15:05 -0700 |
| commit | 2b02c20ce0c28974b44e69a2e2f5ddc6a470ad6f (patch) | |
| tree | ba2f9e3295e42338f3a83f5bb95952580eab4b91 /include/linux/usb/cdc_ncm.h | |
| parent | mdio: mux: fix parsing mux registers outside of the PHY address range (diff) | |
| download | linux-dev-2b02c20ce0c28974b44e69a2e2f5ddc6a470ad6f.tar.xz linux-dev-2b02c20ce0c28974b44e69a2e2f5ddc6a470ad6f.zip | |
cdc_ncm: Set NTB format again after altsetting switch for Huawei devices
Some firmwares in Huawei E3372H devices have been observed to switch back
to NTB 32-bit format after altsetting switch.
This patch implements a driver flag to check for the device settings and
set NTB format to 16-bit again if needed.
The flag has been activated for devices controlled by the huawei_cdc_ncm.c
driver.
V1->V2:
- fixed broken error checks
- some corrections to the commit message
V2->V3:
- variable name changes, to clarify what's happening
- check (and possibly set) the NTB format later in the common bind code path
Signed-off-by: Enrico Mioso <mrkiko.rs@gmail.com>
Reported-and-tested-by: Christian Panton <christian@panton.org>
Reviewed-by: Bjørn Mork <bjorn@mork.no>
CC: Bjørn Mork <bjorn@mork.no>
CC: Christian Panton <christian@panton.org>
CC: linux-usb@vger.kernel.org
CC: netdev@vger.kernel.org
CC: Oliver Neukum <oliver@neukum.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/usb/cdc_ncm.h')
| -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 021f7a88f52c..1a59699cf82a 100644 --- a/include/linux/usb/cdc_ncm.h +++ b/include/linux/usb/cdc_ncm.h @@ -83,6 +83,7 @@ /* Driver flags */ #define CDC_NCM_FLAG_NDP_TO_END 0x02 /* NDP is placed at end of frame */ #define CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE 0x04 /* Avoid altsetting toggle during init */ +#define CDC_NCM_FLAG_RESET_NTB16 0x08 /* set NDP16 one more time after altsetting switch */ #define cdc_ncm_comm_intf_is_mbim(x) ((x)->desc.bInterfaceSubClass == USB_CDC_SUBCLASS_MBIM && \ (x)->desc.bInterfaceProtocol == USB_CDC_PROTO_NONE) |