From 998ed7803a82be29fbe7ea7640c407bc864323ac Mon Sep 17 00:00:00 2001
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Mon, 27 Apr 2020 08:18:03 +0200
Subject: [PATCH 5/8] net/sonic: Fix a resource leak in an error handling path
in 'jazz_sonic_probe()'
Git-commit: 10e3cc180e64385edc9890c6855acf5ed9ca1339
Patch-mainline: v5.7-rc5
References: git-fixes
A call to 'dma_alloc_coherent()' is hidden in 'sonic_alloc_descriptors()',
called from 'sonic_probe1()'.
This is correctly freed in the remove function, but not in the error
handling path of the probe function.
Fix it and add the missing 'dma_free_coherent()' call.
While at it, rename a label in order to be slightly more informative.
Fixes: efcce839360f ("[PATCH] macsonic/jazzsonic network drivers update")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Denis Kirjanov <denis.kirjanov@suse.com>
---
drivers/net/ethernet/natsemi/jazzsonic.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/natsemi/jazzsonic.c b/drivers/net/ethernet/natsemi/jazzsonic.c
index a6caeb567c0d..2bf2b0314ca9 100644
--- a/drivers/net/ethernet/natsemi/jazzsonic.c
+++ b/drivers/net/ethernet/natsemi/jazzsonic.c
@@ -246,13 +246,15 @@ static int jazz_sonic_probe(struct platform_device *pdev)
goto out;
err = register_netdev(dev);
if (err)
- goto out1;
+ goto undo_probe1;
printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq);
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_mem_region(dev->base_addr, SONIC_MEM_SIZE);
out:
free_netdev(dev);
--
2.16.4