From 8cdfb29c0cd8018f92214c11c631d8926f4cb032 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Fri, 9 Mar 2007 10:54:42 -0500 Subject: libata/IDE: remove combined mode quirk Both old-IDE and libata should be able handle all controllers and devices found using normal resource reservation methods. This eliminates the awful, low-performing split-driver configuration where old-IDE drove the PATA portion of a PCI device, in PIO-only mode, and libata drove the SATA portion of the /same/ PCI device, in DMA mode. Typically vendors would ship SATA hard drive / PATA optical configuration, which would lend itself to slow (PIO-only) CD-ROM performance. For Intel users running in combined mode, it is now wholly dependent on your driver choice (potentially link order, if you compile both drivers in) whether old-IDE or libata will drive your hardware. In either case, you will get full performance from both SATA and PATA ports now, without having to pass a kernel command line parameter. Signed-off-by: Jeff Garzik --- kernel/resource.c | 21 --------------------- 1 file changed, 21 deletions(-) (limited to 'kernel/resource.c') diff --git a/kernel/resource.c b/kernel/resource.c index bdb55a33f96..9bd14fd3e6d 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -212,27 +212,6 @@ int request_resource(struct resource *root, struct resource *new) EXPORT_SYMBOL(request_resource); -/** - * ____request_resource - reserve a resource, with resource conflict returned - * @root: root resource descriptor - * @new: resource descriptor desired by caller - * - * Returns: - * On success, NULL is returned. - * On error, a pointer to the conflicting resource is returned. - */ -struct resource *____request_resource(struct resource *root, struct resource *new) -{ - struct resource *conflict; - - write_lock(&resource_lock); - conflict = __request_resource(root, new); - write_unlock(&resource_lock); - return conflict; -} - -EXPORT_SYMBOL(____request_resource); - /** * release_resource - release a previously reserved resource * @old: resource pointer -- cgit v1.2.3