[PATCH 1/9] ax88179_178a: Fix endianness of pause watermark register
From: Birger Koblitz
Date: Wed Jul 01 2026 - 01:53:18 EST
The 16-bit pause watermark register is little endian as
described in the ASIX 4.1.0 out-of-tree driver. Correct the
register byte sequence but also swap the configuration values
used in the code in order to keep the current behaviour.
The endianness is relevant for 16-bit writes to the register.
Signed-off-by: Birger Koblitz <mail@xxxxxxxxxxxxxxxxx>
---
drivers/net/usb/ax88179_178a.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c
index 98f899ea2e9462f1ba99281a875385241745458b..945c071dfd1d2f0816c779e1a401ac158adc8d99 100644
--- a/drivers/net/usb/ax88179_178a.c
+++ b/drivers/net/usb/ax88179_178a.c
@@ -32,8 +32,8 @@
#define AX_ACCESS_EEPROM 0x04
#define AX_ACCESS_EFUS 0x05
#define AX_RELOAD_EEPROM_EFUSE 0x06
-#define AX_PAUSE_WATERLVL_HIGH 0x54
-#define AX_PAUSE_WATERLVL_LOW 0x55
+#define AX_PAUSE_WATERLVL_LOW 0x54
+#define AX_PAUSE_WATERLVL_HIGH 0x55
#define PHYSICAL_LINK_STATUS 0x02
#define AX_USB_SS 0x04
@@ -1617,11 +1617,10 @@ static int ax88179_reset(struct usbnet *dev)
dev->rx_urb_size = 1024 * 20;
*tmp = 0x34;
- ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp);
+ ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH, 1, 1, tmp);
*tmp = 0x52;
- ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH,
- 1, 1, tmp);
+ ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp);
/* Enable checksum offload */
*tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
--
2.47.3