Commit fcc61962 authored by Bjorn Helgaas's avatar Bjorn Helgaas Committed by Michal Simek
Browse files

microblaze/PCI: Remove pci_phys_mem_access_prot() dead code 



pci_phys_mem_access_prot() is defined but never used.  Remove it.

Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20220121205150.1151607-1-helgaas@kernel.org


Signed-off-by: default avatarMichal Simek <michal.simek@xilinx.com>
parent 19d448a0

arch/microblaze/include/asm/pci.h

+0 −4
Original line number Diff line number Diff line
@@ -61,10 +61,6 @@ extern int pci_mmap_legacy_page_range(struct pci_bus *bus, 
extern void pcibios_resource_survey(void);



struct file;

extern pgprot_t	pci_phys_mem_access_prot(struct file *file,

					 unsigned long pfn,

					 unsigned long size,

					 pgprot_t prot);



/* This part of code was originally in xilinx-pci.h */

#ifdef CONFIG_PCI_XILINX

arch/microblaze/pci/pci-common.c

+0 −49
Original line number Diff line number Diff line
@@ -165,55 +165,6 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma) 
	return 0;

}



/*

 * This one is used by /dev/mem and fbdev who have no clue about the

 * PCI device, it tries to find the PCI device first and calls the

 * above routine

 */

pgprot_t pci_phys_mem_access_prot(struct file *file,

				  unsigned long pfn,

				  unsigned long size,

				  pgprot_t prot)

{

	struct pci_dev *pdev = NULL;

	struct resource *found = NULL;

	resource_size_t offset = ((resource_size_t)pfn) << PAGE_SHIFT;

	int i;



	if (page_is_ram(pfn))

		return prot;



	prot = pgprot_noncached(prot);

	for_each_pci_dev(pdev) {

		for (i = 0; i <= PCI_ROM_RESOURCE; i++) {

			struct resource *rp = &pdev->resource[i];

			int flags = rp->flags;



			/* Active and same type? */

			if ((flags & IORESOURCE_MEM) == 0)

				continue;

			/* In the range of this resource? */

			if (offset < (rp->start & PAGE_MASK) ||

			    offset > rp->end)

				continue;

			found = rp;

			break;

		}

		if (found)

			break;

	}

	if (found) {

		if (found->flags & IORESOURCE_PREFETCH)

			prot = pgprot_noncached_wc(prot);

		pci_dev_put(pdev);

	}



	pr_debug("PCI: Non-PCI map for %llx, prot: %lx\n",

		 (unsigned long long)offset, pgprot_val(prot));



	return prot;

}



/* This provides legacy IO read access on a bus */

int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val, size_t size)

{