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authorTejun Heo <tj@kernel.org>2009-09-22 12:34:48 +0400
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-11-04 19:47:11 +0300
commit15ea76d407d560f985224b65fe59c9db01692a0d (patch)
treedd9dd1cd4cab4bff26c34853a1c67898e8500243 /include
parent4c0eec7a86303ce6e3edf7825d0ef1d414e76767 (diff)
downloadlinux-15ea76d407d560f985224b65fe59c9db01692a0d.tar.xz
pccard: configure CLS on attach
For non hotplug PCI devices, the system firmware usually configures CLS correctly. For pccard devices system firmware can't do it and Linux PCI layer doesn't do it either. Unfortunately this leads to poor performance for certain devices (sata_sil). Unless MWI, which requires separate configuration, is to be used, CLS doesn't affect correctness, so the configuration should be harmless. This patch makes pci_set_cacheline_size() always built and export it and make pccard call it during attach. Please note that some other PCI hotplug drivers (shpchp and pciehp) also configure CLS on hotplug. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Daniel Ritz <daniel.ritz@gmx.ch> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Greg KH <greg@kroah.com> Cc: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Cc: Axel Birndt <towerlexa@gmx.de> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/pci.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index b849861d78e6..da4128f6e916 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -701,6 +701,7 @@ void pci_disable_device(struct pci_dev *dev);
void pci_set_master(struct pci_dev *dev);
void pci_clear_master(struct pci_dev *dev);
int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
+int pci_set_cacheline_size(struct pci_dev *dev);
#define HAVE_PCI_SET_MWI
int __must_check pci_set_mwi(struct pci_dev *dev);
int pci_try_set_mwi(struct pci_dev *dev);