5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
[ Upstream commit 25d70702142ac2115e75e01a0a985c6ea1d78033 ]
Commit a23aa0404218 ("net: stmmac: ethtool: Fixed calltrace caused by
unbalanced disable_irq_wake calls") introduced checks to prevent
unbalanced enable and disable IRQ wake calls. However it only
initialized the auxiliary variable on one of the paths,
stmmac_request_irq_multi_msi(), missing the other,
stmmac_request_irq_single().
Add the same initialization on stmmac_request_irq_single() to prevent
"Unbalanced IRQ <x> wake disable" warnings from being printed the first
time disable_irq_wake() is called on platforms that run on that code
path.
Fixes: a23aa0404218 ("net: stmmac: ethtool: Fixed calltrace caused by unbalanced disable_irq_wake calls")
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Link: https://patch.msgid.link/20241101-stmmac-unbalanced-wake-single-fix-v1-1-5952524c97f0@xxxxxxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 4a194f30f4a83..2478caeec763f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3650,6 +3650,7 @@ static int stmmac_request_irq_single(struct net_device *dev)
/* Request the Wake IRQ in case of another line
* is used for WoL
*/
+ priv->wol_irq_disabled = true;
if (priv->wol_irq > 0 && priv->wol_irq != dev->irq) {
ret = request_irq(priv->wol_irq, stmmac_interrupt,
IRQF_SHARED, dev->name, dev);
--
2.43.0
