Attachment 183021 Details for Bug 270661 – patch intoduces ide=disable

[patch] patch intoduces ide=disable

rhel4-ide-disable.patch (text/plain), 2.28 KB, created by Gerd Hoffmann on 2007-08-31 10:13:08 UTC

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Creator: Gerd Hoffmann

Created: 2007-08-31 10:13:08 UTC

Size: 2.28 KB

patch

obsolete

>--- linux-2.6.9/include/linux/ide.h.xenpv	2007-08-30 10:06:59.000000000 +0200
>+++ linux-2.6.9/include/linux/ide.h	2007-08-30 11:37:50.000000000 +0200
>@@ -1191,6 +1191,7 @@ extern int generic_ide_ioctl(struct file
> extern	ide_hwif_t	ide_hwifs[];		/* master data repository */
> #endif
> extern int noautodma;
>+extern int disable_ide;
> 
> extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
> extern int ide_end_dequeued_request (ide_drive_t *drive, struct request *rq, int uptodate, int nrsecs);
>--- linux-2.6.9/drivers/ide/setup-pci.c.xenpv	2007-08-30 10:06:41.000000000 +0200
>+++ linux-2.6.9/drivers/ide/setup-pci.c	2007-08-30 11:39:15.000000000 +0200
>@@ -862,6 +862,11 @@ static LIST_HEAD(ide_pci_drivers);
> 
> int ide_pci_register_driver(struct pci_driver *driver)
> {
>+	if (disable_ide) {
>+		printk(KERN_DEBUG "IDE disabled: ignore pci driver %s\n", driver->name);
>+		return -EINVAL;
>+	}
>+
> 	if(!pre_init)
> 		return pci_module_init(driver);
> 	list_add_tail(&driver->node, &ide_pci_drivers);
>--- linux-2.6.9/drivers/ide/ide.c.xenpv	2007-08-30 10:06:54.000000000 +0200
>+++ linux-2.6.9/drivers/ide/ide.c	2007-08-30 11:38:36.000000000 +0200
>@@ -174,6 +174,7 @@ static const u8 ide_hwif_to_major[] = { 
> static int idebus_parameter;	/* holds the "idebus=" parameter */
> static int system_bus_speed;	/* holds what we think is VESA/PCI bus speed */
> static int initializing;	/* set while initializing built-in drivers */
>+int disable_ide;
> 
> DECLARE_MUTEX(ide_cfg_sem);
> EXPORT_SYMBOL_GPL(ide_cfg_sem);
>@@ -668,7 +669,14 @@ ide_proc_entry_t generic_subdriver_entri
> static struct resource* hwif_request_region(ide_hwif_t *hwif,
> 					    unsigned long addr, int num)
> {
>-	struct resource *res = request_region(addr, num, hwif->name);
>+	struct resource *res;
>+
>+	if (disable_ide) {
>+		printk(KERN_DEBUG "IDE disabled: blocking 0x%lX-0x%lX for %s\n",
>+		       addr, addr+num-1, hwif->name);
>+		return NULL;
>+	}
>+	res = request_region(addr, num, hwif->name);
> 
> 	if (!res)
> 		printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
>@@ -2131,6 +2139,12 @@ int __init ide_setup (char *s)
> 		return 1;
> 	}
> 
>+	if (!strcmp(s, "ide=disable")) {
>+		printk(" : disable drivers/ide subsystem\n");
>+		disable_ide = 1;
>+		return 1;
>+	}
>+
> #ifdef CONFIG_BLK_DEV_IDEPCI
> 	if (!strcmp(s, "ide=reverse")) {
> 		ide_scan_direction = 1;

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Attachments on bug 270661: 183021