PCI: Pull PCI 'latency timer' setup up into the core

The 'latency timer' of PCI devices, both Type 0 and Type 1,
is setup in architecture-specific code [see: 'pcibios_set_master()'].
There are two approaches being taken by all the architectures - check
if the 'latency timer' is currently set between 16 and 255 and if not
bring it within bounds, or, do nothing (and then there is the
gratuitously different PA-RISC implementation).

There is nothing architecture-specific about PCI's 'latency timer' so
this patch pulls its setup functionality up into the PCI core by
creating a generic 'pcibios_set_master()' function using the '__weak'
attribute which can be used by all architectures as a default which,
if necessary, can then be over-ridden by architecture-specific code.

No functional change.

Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 0 insertions, 6 deletions

diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index c2691afe8f7..cfdb2f65294 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -243,12 +243,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
         return pci_enable_resources(dev, mask);
 }
 
-/*
- *  If we set up a device for bus mastering, we need to check and set
- *  the latency timer as it may not be properly set.
- */
-static unsigned int pcibios_max_latency = 255;
-
 void pcibios_set_master(struct pci_dev *dev)
 {
         u8 lat;