PCI: conditional resource-reallocation through kernel parameter pci=realloc
Multiple attempts to dynamically reallocate pci resources have
unfortunately lead to regressions. Though we continue to fix the
regressions and fine tune the dynamic-reallocation behavior, we have not
reached a acceptable state yet.
This patch provides a interim solution. It disables dynamic reallocation
by default, but adds the ability to enable it through pci=realloc kernel
command line parameter.
Tested-by: Oliver Hartkopp <[email protected]>
Signed-off-by: Ram Pai <[email protected]>
Signed-off-by: Jesse Barnes <[email protected]>
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 731e202..3a39bf1 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -146,6 +146,8 @@
static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
#endif
+extern void pci_realloc(void);
+
static inline int pci_no_d1d2(struct pci_dev *dev)
{
unsigned int parent_dstates = 0;
