[PATCH rtw-next v2 01/11] wifi: rtw89: usb: Support 2 bulk in endpoints

[Bitterblue Smith <rtl8821cerfe2@gmail.com>]

RTL8912AU has 2 bulk in endpoints, not 1, so raise the limit.

The second bulk-in is for USB interrupt mode for SER (system error
recovery) flow. SER is not currently implemented for USB devices in
rtw89.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
---
v2:
 - Add Acked-by.
 - Add more information to the commit message.
---
 drivers/net/wireless/realtek/rtw89/usb.c | 15 +++++++++++----
 drivers/net/wireless/realtek/rtw89/usb.h |  3 ++-
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw89/usb.c b/drivers/net/wireless/realtek/rtw89/usb.c
index 767a95f759b1..d3c7ed29cfe5 100644
--- a/drivers/net/wireless/realtek/rtw89/usb.c
+++ b/drivers/net/wireless/realtek/rtw89/usb.c
@@ -511,7 +511,7 @@ static void rtw89_usb_rx_resubmit(struct rtw89_usb *rtwusb,
 	rxcb->rx_skb = rx_skb;
 
 	usb_fill_bulk_urb(rxcb->rx_urb, rtwusb->udev,
-			  usb_rcvbulkpipe(rtwusb->udev, rtwusb->in_pipe),
+			  usb_rcvbulkpipe(rtwusb->udev, rtwusb->in_pipe[0]),
 			  rxcb->rx_skb->data, RTW89_USB_RECVBUF_SZ,
 			  rtw89_usb_read_port_complete, rxcb);
 
@@ -948,6 +948,7 @@ static int rtw89_usb_parse(struct rtw89_dev *rtwdev,
 	struct rtw89_usb *rtwusb = rtw89_usb_priv(rtwdev);
 	struct usb_endpoint_descriptor *endpoint;
 	int num_out_pipes = 0;
+	int num_in_pipes = 0;
 	u8 num;
 	int i;
 
@@ -963,13 +964,14 @@ static int rtw89_usb_parse(struct rtw89_dev *rtwdev,
 
 		if (usb_endpoint_dir_in(endpoint) &&
 		    usb_endpoint_xfer_bulk(endpoint)) {
-			if (rtwusb->in_pipe) {
+			if (num_in_pipes >= RTW89_MAX_BULKIN_NUM) {
 				rtw89_err(rtwdev,
-					  "found more than 1 bulk in endpoint\n");
+					  "found more than %d bulk in endpoint\n",
+					  RTW89_MAX_BULKIN_NUM);
 				return -EINVAL;
 			}
 
-			rtwusb->in_pipe = num;
+			rtwusb->in_pipe[num_in_pipes++] = num;
 		}
 
 		if (usb_endpoint_dir_out(endpoint) &&
@@ -985,6 +987,11 @@ static int rtw89_usb_parse(struct rtw89_dev *rtwdev,
 		}
 	}
 
+	if (num_in_pipes < 1) {
+		rtw89_err(rtwdev, "no bulk in endpoints found\n");
+		return -EINVAL;
+	}
+
 	if (num_out_pipes < 1) {
 		rtw89_err(rtwdev, "no bulk out endpoints found\n");
 		return -EINVAL;
diff --git a/drivers/net/wireless/realtek/rtw89/usb.h b/drivers/net/wireless/realtek/rtw89/usb.h
index 507f61f58ed9..82de700eb142 100644
--- a/drivers/net/wireless/realtek/rtw89/usb.h
+++ b/drivers/net/wireless/realtek/rtw89/usb.h
@@ -18,6 +18,7 @@
 #define RTW89_USB_MOD512_PADDING	4
 
 #define RTW89_MAX_ENDPOINT_NUM		9
+#define RTW89_MAX_BULKIN_NUM		2
 #define RTW89_MAX_BULKOUT_NUM		7
 
 #define R_AX_RXAGG_0_V1			0x6000
@@ -65,7 +66,7 @@ struct rtw89_usb {
 
 	atomic_t continual_io_error;
 
-	u8 in_pipe;
+	u8 in_pipe[RTW89_MAX_BULKIN_NUM];
 	u8 out_pipe[RTW89_MAX_BULKOUT_NUM];
 
 	struct workqueue_struct *rxwq;
-- 
2.53.0