From 86243ae6dbfc5d02ee714d7de5c2d8120bb8e52d Mon Sep 17 00:00:00 2001 From: Andy Whitcroft Date: Thu, 17 May 2012 18:55:28 +0100 Subject: [PATCH Quantal] UBUNTU: SAUCE: ata_piix: add a disable_driver option We need to be able to fully disable the ata_piix driver from the kernel command line. Add a generic disable_driver to the module init to completely short circuit the initialisation. BugLink: http://bugs.launchpad.net/bugs/994870 Signed-off-by: Andy Whitcroft Acked-by: Luis Henriques Acked-by: Herton Krzesinski Acked-by: Brad Figg Signed-off-by: Tim Gardner --- drivers/ata/ata_piix.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 3c809bf..424084d 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -1719,10 +1719,16 @@ static void piix_remove_one(struct pci_dev *pdev) ata_pci_remove_one(pdev); } +static bool disable_driver = 0; static int __init piix_init(void) { int rc; + if (disable_driver) { + printk(KERN_WARNING "ata_piix: driver disabled completely\n"); + return 0; + } + DPRINTK("pci_register_driver\n"); rc = pci_register_driver(&piix_pci_driver); if (rc) @@ -1739,5 +1745,6 @@ static void __exit piix_exit(void) pci_unregister_driver(&piix_pci_driver); } +module_param(disable_driver, bool, 0); module_init(piix_init); module_exit(piix_exit); -- 1.7.9.5