| Message ID | 529006a7dcd2cd345c2261d4beae0960880f4828.1609633586.git.fthain@telegraphics.com.au |
|---|---|
| State | New |
| Headers | show |
| Series | [v4,net,RESEND] net/sonic: Fix some resource leaks in error handling paths | expand |
From: Finn Thain <fthain@telegraphics.com.au> Date: Sun, 03 Jan 2021 11:26:26 +1100 > From: Christophe JAILLET <christophe.jaillet@wanadoo.fr> > > A call to dma_alloc_coherent() is wrapped by sonic_alloc_descriptors(). > > This is correctly freed in the remove function, but not in the error > handling path of the probe function. Fix this by adding the missing > dma_free_coherent() call. > > While at it, rename a label in order to be slightly more informative. > > Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr> > Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> > Cc: Chris Zankel <chris@zankel.net> > References: commit 10e3cc180e64 ("net/sonic: Fix a resource leak in an error handling path in 'jazz_sonic_probe()'") > Fixes: 74f2a5f0ef64 ("xtensa: Add support for the Sonic Ethernet device for the XT2000 board.") > Fixes: efcce839360f ("[PATCH] macsonic/jazzsonic network drivers update") > Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> > Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Applied and queued up for -stable, thanks.
diff --git a/drivers/net/ethernet/natsemi/macsonic.c b/drivers/net/ethernet/natsemi/macsonic.c index 776b7d264dc3..2289e1fe3741 100644 --- a/drivers/net/ethernet/natsemi/macsonic.c +++ b/drivers/net/ethernet/natsemi/macsonic.c @@ -506,10 +506,14 @@ static int mac_sonic_platform_probe(struct platform_device *pdev) err = register_netdev(dev); if (err) - goto out; + goto undo_probe; return 0; +undo_probe: + dma_free_coherent(lp->device, + SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode), + lp->descriptors, lp->descriptors_laddr); out: free_netdev(dev); @@ -584,12 +588,16 @@ static int mac_sonic_nubus_probe(struct nubus_board *board) err = register_netdev(ndev); if (err) - goto out; + goto undo_probe; nubus_set_drvdata(board, ndev); return 0; +undo_probe: + dma_free_coherent(lp->device, + SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode), + lp->descriptors, lp->descriptors_laddr); out: free_netdev(ndev); return err; diff --git a/drivers/net/ethernet/natsemi/xtsonic.c b/drivers/net/ethernet/natsemi/xtsonic.c index afa166ff7aef..28d9e98db81a 100644 --- a/drivers/net/ethernet/natsemi/xtsonic.c +++ b/drivers/net/ethernet/natsemi/xtsonic.c @@ -229,11 +229,14 @@ int xtsonic_probe(struct platform_device *pdev) sonic_msg_init(dev); if ((err = register_netdev(dev))) - goto out1; + goto undo_probe1; return 0; -out1: +undo_probe1: + dma_free_coherent(lp->device, + SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode), + lp->descriptors, lp->descriptors_laddr); release_region(dev->base_addr, SONIC_MEM_SIZE); out: free_netdev(dev);