* [PATCH] net: moxa: Fix a potential double 'free_irq()'
@ 2020-04-26 20:59 Christophe JAILLET
2020-05-01 3:24 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Christophe JAILLET @ 2020-04-26 20:59 UTC (permalink / raw)
To: davem, jonas.jensen
Cc: netdev, linux-kernel, kernel-janitors, Christophe JAILLET
Should an irq requested with 'devm_request_irq' be released explicitly,
it should be done by 'devm_free_irq()', not 'free_irq()'.
Fixes: 6c821bd9edc9 ("net: Add MOXA ART SoCs ethernet driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
Maybe 'devm_free_irq()' is useless here and it could be freed automatically
by the core framework, but sometimes irq can be tricky.
So I've preferred to keep the logic in place.
---
drivers/net/ethernet/moxa/moxart_ether.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c
index e1651756bf9d..f70bb81e1ed6 100644
--- a/drivers/net/ethernet/moxa/moxart_ether.c
+++ b/drivers/net/ethernet/moxa/moxart_ether.c
@@ -564,7 +564,7 @@ static int moxart_remove(struct platform_device *pdev)
struct net_device *ndev = platform_get_drvdata(pdev);
unregister_netdev(ndev);
- free_irq(ndev->irq, ndev);
+ devm_free_irq(&pdev->dev, ndev->irq, ndev);
moxart_mac_free_memory(ndev);
free_netdev(ndev);
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] net: moxa: Fix a potential double 'free_irq()'
2020-04-26 20:59 [PATCH] net: moxa: Fix a potential double 'free_irq()' Christophe JAILLET
@ 2020-05-01 3:24 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2020-05-01 3:24 UTC (permalink / raw)
To: christophe.jaillet; +Cc: jonas.jensen, netdev, linux-kernel, kernel-janitors
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Sun, 26 Apr 2020 22:59:21 +0200
> Should an irq requested with 'devm_request_irq' be released explicitly,
> it should be done by 'devm_free_irq()', not 'free_irq()'.
>
> Fixes: 6c821bd9edc9 ("net: Add MOXA ART SoCs ethernet driver")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Applied, thank you.
^ permalink raw reply [flat|nested] 2+ messages in thread
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