From: Jeff Garzik <jeff@garzik.org>
Date: Wed, 27 Aug 2008 09:54:30 +0000 (-0400)
Subject: [netdrvr] smc91x: fix resource removal (null ptr deref)
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6fc30db563c57e383ca2ec836d8c9208c52d265a;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[netdrvr] smc91x: fix resource removal (null ptr deref)

Properly handle resource cleanup on unplug/exit.

Spotted by Jonathan Cameron

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c
index 2040965d7724..24768c10cadb 100644
--- a/drivers/net/smc91x.c
+++ b/drivers/net/smc91x.c
@@ -2255,7 +2255,7 @@ static int smc_drv_remove(struct platform_device *pdev)
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
 	if (!res)
-		platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	release_mem_region(res->start, SMC_IO_EXTENT);
 
 	free_netdev(ndev);