Add timeout polling wait for auxiliary timestamps snapshot FIFO clear bit
(ATSFC) to clear. This is to ensure no residue fifo value is being read
erroneously.
Fixes: f4da56529da6 ("net: stmmac: Add support for external trigger timestamping")
Cc: <[email protected]> # 5.10.x
Signed-off-by: Noor Azura Ahmad Tarmizi <[email protected]>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
index fc06ddeac0d5..b4388ca8d211 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
@@ -210,7 +210,10 @@ static int stmmac_enable(struct ptp_clock_info *ptp,
}
writel(acr_value, ptpaddr + PTP_ACR);
mutex_unlock(&priv->aux_ts_lock);
- ret = 0;
+ /* wait for auxts fifo clear to finish */
+ ret = readl_poll_timeout(ptpaddr + PTP_ACR, acr_value,
+ !(acr_value & PTP_ACR_ATSFC),
+ 10, 10000);
break;
default:
--
2.17.1
Hello:
This patch was applied to netdev/net.git (master)
by Jakub Kicinski <[email protected]>:
On Wed, 11 Jan 2023 13:02:00 +0800 you wrote:
> Add timeout polling wait for auxiliary timestamps snapshot FIFO clear bit
> (ATSFC) to clear. This is to ensure no residue fifo value is being read
> erroneously.
>
> Fixes: f4da56529da6 ("net: stmmac: Add support for external trigger timestamping")
> Cc: <[email protected]> # 5.10.x
> Signed-off-by: Noor Azura Ahmad Tarmizi <[email protected]>
>
> [...]
Here is the summary with links:
- [net,v2,1/1] net: stmmac: add aux timestamps fifo clearance wait
https://git.kernel.org/netdev/net/c/ae9dcb91c606
You are awesome, thank you!
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