[PATCH v2 1/3] mt76usb: allow mt76u_bulk_msg be used for reads

[Stanislaw Gruszka]

Extend mt76u_bulk_msg() such it can be used for synchronous bulk reads.

Signed-off-by: Stanislaw Gruszka <sgrus...@redhat.com>
---
v2: pass NULL actual_len to usb_bulk_msg

 drivers/net/wireless/mediatek/mt76/mt76.h            | 12 ++++++++----
 drivers/net/wireless/mediatek/mt76/mt76x02_usb_mcu.c |  4 ++--
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h 
b/drivers/net/wireless/mediatek/mt76/mt76.h
index f55dc621e060..6092646014c4 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -729,16 +729,20 @@ static inline u8 q2ep(u8 qid)
 }
 
 static inline int
-mt76u_bulk_msg(struct mt76_dev *dev, void *data, int len, int timeout)
+mt76u_bulk_msg(struct mt76_dev *dev, void *data, int len, int *actual_len,
+              int timeout)
 {
        struct usb_interface *intf = to_usb_interface(dev->dev);
        struct usb_device *udev = interface_to_usbdev(intf);
        struct mt76_usb *usb = &dev->usb;
        unsigned int pipe;
-       int sent;
 
-       pipe = usb_sndbulkpipe(udev, usb->out_ep[MT_EP_OUT_INBAND_CMD]);
-       return usb_bulk_msg(udev, pipe, data, len, &sent, timeout);
+       if (actual_len)
+               pipe = usb_rcvbulkpipe(udev, usb->in_ep[MT_EP_IN_CMD_RESP]);
+       else
+               pipe = usb_sndbulkpipe(udev, usb->out_ep[MT_EP_OUT_INBAND_CMD]);
+
+       return usb_bulk_msg(udev, pipe, data, len, actual_len, timeout);
 }
 
 int mt76u_vendor_request(struct mt76_dev *dev, u8 req,
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_usb_mcu.c 
b/drivers/net/wireless/mediatek/mt76/mt76x02_usb_mcu.c
index e469e383cb88..f497c8e4332a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x02_usb_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x02_usb_mcu.c
@@ -126,7 +126,7 @@ __mt76x02u_mcu_send_msg(struct mt76_dev *dev, struct 
sk_buff *skb,
        if (ret)
                return ret;
 
-       ret = mt76u_bulk_msg(dev, skb->data, skb->len, 500);
+       ret = mt76u_bulk_msg(dev, skb->data, skb->len, NULL, 500);
        if (ret)
                return ret;
 
@@ -271,7 +271,7 @@ __mt76x02u_mcu_fw_send_data(struct mt76x02_dev *dev, u8 
*data,
 
        data_len = MT_CMD_HDR_LEN + len + sizeof(info);
 
-       err = mt76u_bulk_msg(&dev->mt76, data, data_len, 1000);
+       err = mt76u_bulk_msg(&dev->mt76, data, data_len, NULL, 1000);
        if (err) {
                dev_err(dev->mt76.dev, "firmware upload failed: %d\n", err);
                return err;
-- 
2.7.5