Device removal can result in a large burst of driver warning messages
(20 - 30) sent to the kernel log. Most of these are register read/write
failures.
This change limits the rate at which these messages are emitted.
Signed-off-by: John Efstathiades <john.efstathiades@xxxxxxxxxxxxx>
---
drivers/net/usb/lan78xx.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index 4ec752d9751a..793f8fbe0069 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -462,7 +462,7 @@ static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data)
if (likely(ret >= 0)) {
le32_to_cpus(buf);
*data = *buf;
- } else {
+ } else if (net_ratelimit()) {
netdev_warn(dev->net,
"Failed to read register index 0x%08x. ret = %d",
index, ret);
@@ -492,7 +492,8 @@ static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data)
USB_VENDOR_REQUEST_WRITE_REGISTER,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, index, buf, 4, USB_CTRL_SET_TIMEOUT);
- if (unlikely(ret < 0)) {
+ if (unlikely(ret < 0) &&
+ net_ratelimit()) {
netdev_warn(dev->net,
"Failed to write register index 0x%08x. ret = %d",
index, ret);
--
2.25.1
