From: Akinobu Mita Date: Sat, 28 Oct 2006 18:52:14 +0000 (+0900) Subject: [PATCH] tokenring: fix module_init error handling X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9d4df9e0fadfc84cd826e0f7e946691b4d7baee5;p=openwrt%2Fstaging%2Fblogic.git [PATCH] tokenring: fix module_init error handling - Call platform_driver_unregister() before return when no cards found. (fixes data corruption when no cards found) - Check platform_device_register_simple() return value Cc: Jeff Garzik Cc: Mike Phillips Signed-off-by: Akinobu Mita drivers/net/tokenring/proteon.c | 9 +++++++-- drivers/net/tokenring/skisa.c | 9 +++++++-- 2 files changed, 14 insertions(+), 4 deletions(-) Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/tokenring/proteon.c b/drivers/net/tokenring/proteon.c index 4f756960db2a..cb7dbb63c9d9 100644 --- a/drivers/net/tokenring/proteon.c +++ b/drivers/net/tokenring/proteon.c @@ -370,6 +370,10 @@ static int __init proteon_init(void) dev->dma = dma[i]; pdev = platform_device_register_simple("proteon", i, NULL, 0); + if (IS_ERR(pdev)) { + free_netdev(dev); + continue; + } err = setup_card(dev, &pdev->dev); if (!err) { proteon_dev[i] = pdev; @@ -385,9 +389,10 @@ static int __init proteon_init(void) /* Probe for cards. */ if (num == 0) { printk(KERN_NOTICE "proteon.c: No cards found.\n"); - return (-ENODEV); + platform_driver_unregister(&proteon_driver); + return -ENODEV; } - return (0); + return 0; } static void __exit proteon_cleanup(void) diff --git a/drivers/net/tokenring/skisa.c b/drivers/net/tokenring/skisa.c index d6ba41cf3110..33afea31d87b 100644 --- a/drivers/net/tokenring/skisa.c +++ b/drivers/net/tokenring/skisa.c @@ -380,6 +380,10 @@ static int __init sk_isa_init(void) dev->dma = dma[i]; pdev = platform_device_register_simple("skisa", i, NULL, 0); + if (IS_ERR(pdev)) { + free_netdev(dev); + continue; + } err = setup_card(dev, &pdev->dev); if (!err) { sk_isa_dev[i] = pdev; @@ -395,9 +399,10 @@ static int __init sk_isa_init(void) /* Probe for cards. */ if (num == 0) { printk(KERN_NOTICE "skisa.c: No cards found.\n"); - return (-ENODEV); + platform_driver_unregister(&sk_isa_driver); + return -ENODEV; } - return (0); + return 0; } static void __exit sk_isa_cleanup(void)