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Date: Sun, 29 Oct 2006 03:52:14 +0900 From: Akinobu Mita <akinobu.mita@...il.com> To: linux-kernel@...r.kernel.org, linux-netdev@...r.kernel.org Cc: Jeff Garzik <jgarzik@...ox.com>, Mike Phillips <mikep@...uxtr.net> Subject: [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 <jgarzik@...ox.com> Cc: Mike Phillips <mikep@...uxtr.net> Signed-off-by: Akinobu Mita <akinobu.mita@...il.com> drivers/net/tokenring/proteon.c | 9 +++++++-- drivers/net/tokenring/skisa.c | 9 +++++++-- 2 files changed, 14 insertions(+), 4 deletions(-) Index: work-fault-inject/drivers/net/tokenring/proteon.c =================================================================== --- work-fault-inject.orig/drivers/net/tokenring/proteon.c +++ work-fault-inject/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) Index: work-fault-inject/drivers/net/tokenring/skisa.c =================================================================== --- work-fault-inject.orig/drivers/net/tokenring/skisa.c +++ work-fault-inject/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) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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