path: root/kernel
diff options
authorJeff Garzik <jeff@garzik.org>2007-03-09 10:54:42 -0500
committerJeff Garzik <jeff@garzik.org>2007-04-28 14:15:59 -0400
commit8cdfb29c0cd8018f92214c11c631d8926f4cb032 (patch)
treed4a74d25c301e4c045ca21c45dbcbeadde234548 /kernel
parente424675f152572d8d2365e351b90bfd81686a150 (diff)
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 <jeff@garzik.org>
Diffstat (limited to 'kernel')
1 files changed, 0 insertions, 21 deletions
diff --git a/kernel/resource.c b/kernel/resource.c
index bdb55a33f969..9bd14fd3e6de 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -213,27 +213,6 @@ int request_resource(struct resource *root, struct resource *new)
- * ____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;
* release_resource - release a previously reserved resource
* @old: resource pointer