xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

MIPS: make PCI_DMA_BUS_IS_PHYS=1 constant

Browse Source 
No one of supported MIPS machines has an IOMMU unit, so we can safely define
PCI_DMA_BUS_IS_PHYS = 1. Also remove iommu flag from the pci controller
structure, since it is useless.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Linux MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/7604/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Sergey Ryazanov
2014-08-30 06:06:28 +04:00
committed by Ralf Baechle
parent 1e321fa917
commit e8b5325ca3
5 changed files with 4 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
arch/mips/include/asm/pci.h
View File

@@ -43,8 +43,6 @@ struct pci_controller {
and XFree86. Eventually will be removed. */
unsigned int need_domain_info;
int iommu;
/* Optional access methods for reading/writing the bus number
of the PCI controller */
int (*get_busno)(void);
@@ -106,11 +104,11 @@ static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
struct pci_dev;
/*
* The PCI address space does equal the physical memory address space. The
* networking and block device layers use this boolean for bounce buffer
* decisions. This is set if any hose does not have an IOMMU.
* The PCI address space does equal the physical memory address space.
* The networking and block device layers use this boolean for bounce
* buffer decisions.
*/
extern unsigned int PCI_DMA_BUS_IS_PHYS;
#define PCI_DMA_BUS_IS_PHYS (1)
#ifdef CONFIG_PCI_DOMAINS
#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index