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lan78xx: Limit number of driver warning messages

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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@pebblebay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Efstathiades 2021-08-24 19:56:13 +01:00 committed by David S. Miller
parent 77dfff5bb7
commit df0d6f7a34
1 changed files with 3 additions and 2 deletions
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5
drivers/net/usb/lan78xx.c
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@ -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);