[PATCH v3 50/51] PCI: Introduce resource_disabled()
STALE4065d
From: Yinghai Lu <hidden>
Date: 2015-07-27 23:37:23
Also in:
linux-iommu, linux-pci, linux-sh, linuxppc-dev, lkml, sparclinux
Subsystem:
alpha port, iommu subsystem, linux for powerpc (32-bit and 64-bit), microblaze architecture, pci subsystem, s390 architecture, s390 pci subsystem, sparc + ultrasparc (sparc/sparc64), tensilica xtensa port (xtensa), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Richard Henderson, Matt Turner, Magnus Lindholm, Joerg Roedel, Will Deacon, Madhavan Srinivasan, Michal Simek, Bjorn Helgaas, Heiko Carstens, Vasily Gorbik, Alexander Gordeev, Niklas Schnelle, Gerd Bayer, "David S. Miller", Andreas Larsson, Chris Zankel, Max Filippov, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Revision v3 of 2 in this series.
Revisions (2)
- v3 current
- v4 [diff vs current]
so we can cover !flags and IORESOURCE_DISABLED both. Cc: linux-alpha-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: linux-ia64-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: linux-am33-list-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org Cc: linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Cc: linux-s390-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: sparclinux-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: linux-xtensa-PjhNF2WwrV/0Sa2dR60CXw@public.gmane.org Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Cc: linux-sh-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Signed-off-by: Yinghai Lu <redacted> --- arch/alpha/kernel/pci.c | 2 +- arch/ia64/pci/pci.c | 4 ++-- arch/microblaze/pci/pci-common.c | 15 ++++++++------- arch/mn10300/unit-asb2305/pci-asb2305.c | 4 ++-- arch/mn10300/unit-asb2305/pci.c | 4 ++-- arch/powerpc/kernel/pci-common.c | 16 +++++++++------- arch/powerpc/platforms/powernv/pci-ioda.c | 12 ++++++------ arch/s390/pci/pci.c | 2 +- arch/sparc/kernel/pci.c | 2 +- arch/x86/pci/i386.c | 4 ++-- arch/xtensa/kernel/pci.c | 4 ++-- drivers/iommu/intel-iommu.c | 3 ++- drivers/pci/host/pcie-rcar.c | 2 +- drivers/pci/iov.c | 2 +- drivers/pci/probe.c | 2 +- drivers/pci/quirks.c | 4 ++-- drivers/pci/rom.c | 2 +- drivers/pci/setup-bus.c | 8 ++++---- drivers/pci/setup-res.c | 2 +- include/linux/ioport.h | 4 ++++ 20 files changed, 53 insertions(+), 45 deletions(-)
diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 82f738e..91a7153 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c@@ -282,7 +282,7 @@ pcibios_claim_one_bus(struct pci_bus *b) for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; - if (r->parent || !r->start || !r->flags) + if (r->parent || !r->start || resource_disabled(r)) continue; if (pci_has_flag(PCI_PROBE_ONLY) || (r->flags & IORESOURCE_PCI_FIXED)) {
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 7cc3be9..cc293ea 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c@@ -501,7 +501,7 @@ void pcibios_fixup_device_resources(struct pci_dev *dev) for (idx = 0; idx < PCI_BRIDGE_RESOURCES; idx++) { struct resource *r = &dev->resource[idx]; - if (!r->flags || r->parent || !r->start) + if (resource_disabled(r) || r->parent || !r->start) continue; pci_claim_resource(dev, idx);
@@ -519,7 +519,7 @@ static void pcibios_fixup_bridge_resources(struct pci_dev *dev) for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) { struct resource *r = &dev->resource[idx]; - if (!r->flags || r->parent || !r->start) + if (resource_disabled(r) || r->parent || !r->start) continue; pci_claim_bridge_resource(dev, idx);
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 09b1af6..c123d3c 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c@@ -705,7 +705,7 @@ static void pcibios_fixup_resources(struct pci_dev *dev) } for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { struct resource *res = dev->resource + i; - if (!res->flags) + if (resource_disabled(res)) continue; if (res->start == 0) { pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]",
@@ -806,7 +806,7 @@ static void pcibios_fixup_bridge(struct pci_bus *bus) pci_bus_for_each_resource(bus, res, i) { if (!res) continue; - if (!res->flags) + if (resource_disabled(res)) continue; if (i >= 3 && bus->self->transparent) continue;
@@ -985,7 +985,7 @@ static void pcibios_allocate_bus_resources(struct pci_bus *bus) pci_domain_nr(bus), bus->number); pci_bus_for_each_resource(bus, res, i) { - if (!res || !res->flags + if (!res || resource_disabled(res) || res->start > res->end || res->parent) continue; if (bus->parent == NULL)
@@ -1087,7 +1087,8 @@ static void __init pcibios_allocate_resources(int pass) r = &dev->resource[idx]; if (r->parent) /* Already allocated */ continue; - if (!r->flags || (r->flags & IORESOURCE_UNSET)) + if (resource_disabled(r) || + (r->flags & IORESOURCE_UNSET)) continue; /* Not assigned at all */ /* We only allocate ROMs on pass 1 just in case they * have been screwed up by firmware
@@ -1218,7 +1219,7 @@ void pcibios_claim_one_bus(struct pci_bus *bus) for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; - if (r->parent || !r->start || !r->flags) + if (r->parent || !r->start || resource_disabled(r)) continue; pr_debug("PCI: Claiming %s: ", pci_name(dev));
@@ -1278,7 +1279,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, res->start = (res->start + io_offset) & 0xffffffffu; res->end = (res->end + io_offset) & 0xffffffffu; - if (!res->flags) { + if (resource_disabled(res)) { pr_warn("PCI: I/O resource not set for host "); pr_cont("bridge %s (domain %d)\n", hose->dn->full_name, hose->global_number);
@@ -1298,7 +1299,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, /* Hookup PHB Memory resources */ for (i = 0; i < 3; ++i) { res = &hose->mem_resources[i]; - if (!res->flags) { + if (resource_disabled(res)) { if (i > 0) continue; pr_err("PCI: Memory resource 0 not set for ");
diff --git a/arch/mn10300/unit-asb2305/pci-asb2305.c b/arch/mn10300/unit-asb2305/pci-asb2305.c
index b5b036f..a249821 100644
--- a/arch/mn10300/unit-asb2305/pci-asb2305.c
+++ b/arch/mn10300/unit-asb2305/pci-asb2305.c@@ -103,7 +103,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list) idx < PCI_NUM_RESOURCES; idx++) { r = &dev->resource[idx]; - if (!r->flags) + if (resource_disabled(r)) continue; if (!r->start || pci_claim_bridge_resource(dev, idx) < 0) {
@@ -189,7 +189,7 @@ static int __init pcibios_assign_resources(void) addresses. */ for_each_pci_dev(dev) { r = &dev->resource[PCI_ROM_RESOURCE]; - if (!r->flags || !r->start) + if (resource_disabled(r) || !r->start) continue; if (pci_claim_resource(dev, PCI_ROM_RESOURCE) < 0) { r->end -= r->start;
diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c
index 3dfe2d3..ad77b18 100644
--- a/arch/mn10300/unit-asb2305/pci.c
+++ b/arch/mn10300/unit-asb2305/pci.c@@ -291,7 +291,7 @@ static void pcibios_fixup_device_resources(struct pci_dev *dev) for (idx = 0; idx < PCI_BRIDGE_RESOURCES; idx++) { struct resource *r = &dev->resource[idx]; - if (!r->flags || r->parent || !r->start) + if (resource_disabled(r) || r->parent || !r->start) continue; pci_claim_resource(dev, idx);
@@ -308,7 +308,7 @@ static void pcibios_fixup_bridge_resources(struct pci_dev *dev) for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) { struct resource *r = &dev->resource[idx]; - if (!r->flags || r->parent || !r->start) + if (resource_disabled(r) || r->parent || !r->start) continue; pci_claim_bridge_resource(dev, idx);
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 2d8d654..10bb5cd 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c@@ -810,7 +810,7 @@ static void pcibios_fixup_resources(struct pci_dev *dev) for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { struct resource *res = dev->resource + i; struct pci_bus_region reg; - if (!res->flags) + if (resource_disabled(res)) continue; /* If we're going to re-assign everything, we mark all resources
@@ -927,7 +927,7 @@ static void pcibios_fixup_bridge(struct pci_bus *bus) struct pci_dev *dev = bus->self; pci_bus_for_each_resource(bus, res, i) { - if (!res || !res->flags) + if (!res || resource_disabled(res)) continue; if (i >= 3 && bus->self->transparent) continue;
@@ -1174,7 +1174,8 @@ static void pcibios_allocate_bus_resources(struct pci_bus *bus) pci_domain_nr(bus), bus->number); pci_bus_for_each_resource(bus, res, i) { - if (!res || !res->flags || res->start > res->end || res->parent) + if (!res || resource_disabled(res) || + res->start > res->end || res->parent) continue; /* If the resource was left unset at this point, we clear it */
@@ -1281,7 +1282,8 @@ static void __init pcibios_allocate_resources(int pass) r = &dev->resource[idx]; if (r->parent) /* Already allocated */ continue; - if (!r->flags || (r->flags & IORESOURCE_UNSET)) + if (resource_disabled(r) || + (r->flags & IORESOURCE_UNSET)) continue; /* Not assigned at all */ /* We only allocate ROMs on pass 1 just in case they * have been screwed up by firmware
@@ -1419,7 +1421,7 @@ void pcibios_claim_one_bus(struct pci_bus *bus) for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; - if (r->parent || !r->start || !r->flags) + if (r->parent || !r->start || resource_disabled(r)) continue; pr_debug("PCI: Claiming %s: "
@@ -1504,7 +1506,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, /* Hookup PHB IO resource */ res = &hose->io_resource; - if (!res->flags) { + if (resource_disabled(res)) { pr_info("PCI: I/O resource not set for host" " bridge %s (domain %d)\n", hose->dn->full_name, hose->global_number);
@@ -1522,7 +1524,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, /* Hookup PHB Memory resources */ for (i = 0; i < 3; ++i) { res = &hose->mem_resources[i]; - if (!res->flags) { + if (resource_disabled(res)) { if (i == 0) printk(KERN_ERR "PCI: Memory resource 0 not set for " "host bridge %s (domain %d)\n",
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 5738d31..9c42f52 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c@@ -905,7 +905,7 @@ static int pnv_pci_vf_resource_shift(struct pci_dev *dev, int offset) num_vfs = pdn->num_vfs; for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &dev->resource[i + PCI_IOV_RESOURCES]; - if (!res->flags || !res->parent) + if (resource_disabled(res) || !res->parent) continue; if (!pnv_pci_is_mem_pref_64(res->flags))
@@ -936,7 +936,7 @@ static int pnv_pci_vf_resource_shift(struct pci_dev *dev, int offset) */ for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &dev->resource[i + PCI_IOV_RESOURCES]; - if (!res->flags || !res->parent) + if (resource_disabled(res) || !res->parent) continue; if (!pnv_pci_is_mem_pref_64(res->flags))
@@ -1218,7 +1218,7 @@ static int pnv_pci_vf_assign_m64(struct pci_dev *pdev, u16 num_vfs) for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &pdev->resource[i + PCI_IOV_RESOURCES]; - if (!res->flags || !res->parent) + if (resource_disabled(res) || !res->parent) continue; if (!pnv_pci_is_mem_pref_64(res->flags))
@@ -2771,7 +2771,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev) for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &pdev->resource[i + PCI_IOV_RESOURCES]; - if (!res->flags || res->parent) + if (resource_disabled(res) || res->parent) continue; if (!pnv_pci_is_mem_pref_64(res->flags)) { dev_warn(&pdev->dev, " non M64 VF BAR%d: %pR\n",
@@ -2793,7 +2793,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev) for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &pdev->resource[i + PCI_IOV_RESOURCES]; - if (!res->flags || res->parent) + if (resource_disabled(res) || res->parent) continue; if (!pnv_pci_is_mem_pref_64(res->flags)) { dev_warn(&pdev->dev, "Skipping expanding VF BAR%d: %pR\n",
@@ -2834,7 +2834,7 @@ static void pnv_ioda_setup_pe_seg(struct pci_controller *hose, BUG_ON(!(pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL))); pci_bus_for_each_resource(pe->pbus, res, i) { - if (!res || !res->flags || + if (!res || resource_disabled(res) || res->start > res->end) continue;
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 598f023..d850749 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c@@ -658,7 +658,7 @@ int pcibios_add_device(struct pci_dev *pdev) for (i = 0; i < PCI_BAR_COUNT; i++) { res = &pdev->resource[i]; - if (res->parent || !res->flags) + if (res->parent || resource_disabled(res)) continue; pci_claim_resource(pdev, i); }
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index bfd0b70..f5e9536 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c@@ -630,7 +630,7 @@ static void pci_claim_bus_resources(struct pci_bus *bus) for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; - if (r->parent || !r->start || !r->flags) + if (r->parent || !r->start || resource_disabled(r)) continue; if (ofpci_verbose)
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 0b74efe..8538edb 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c@@ -204,7 +204,7 @@ static void pcibios_allocate_bridge_resources(struct pci_dev *dev) for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) { r = &dev->resource[idx]; - if (!r->flags) + if (resource_disabled(r)) continue; if (r->parent) /* Already allocated */ continue;
@@ -333,7 +333,7 @@ static void pcibios_allocate_dev_rom_resource(struct pci_dev *dev) * addresses. */ r = &dev->resource[PCI_ROM_RESOURCE]; - if (!r->flags || !r->start) + if (resource_disabled(r) || !r->start) return; if (r->parent) /* Already allocated */ return;
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index b848cc3..f34d061 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c@@ -142,7 +142,7 @@ static void __init pci_controller_apertures(struct pci_controller *pci_ctrl, io_offset = (unsigned long)pci_ctrl->io_space.base; res = &pci_ctrl->io_resource; - if (!res->flags) { + if (resource_disabled(res)) { if (io_offset) printk (KERN_ERR "I/O resource not set for host" " bridge %d\n", pci_ctrl->index);
@@ -156,7 +156,7 @@ static void __init pci_controller_apertures(struct pci_controller *pci_ctrl, for (i = 0; i < 3; i++) { res = &pci_ctrl->mem_resources[i]; - if (!res->flags) { + if (resource_disabled(res)) { if (i > 0) continue; printk(KERN_ERR "Memory resource not set for "
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 0649b94..ee9bdbf 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c@@ -1743,7 +1743,8 @@ static int dmar_init_reserved_ranges(void) for (i = 0; i < PCI_NUM_RESOURCES; i++) { r = &pdev->resource[i]; - if (!r->flags || !(r->flags & IORESOURCE_MEM)) + if (resource_disabled(r) || + !(r->flags & IORESOURCE_MEM)) continue; iova = reserve_iova(&reserved_iova_list, IOVA_PFN(r->start),
diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c
index c086210..a6d6bd0 100644
--- a/drivers/pci/host/pcie-rcar.c
+++ b/drivers/pci/host/pcie-rcar.c@@ -365,7 +365,7 @@ static int rcar_pcie_setup(int nr, struct pci_sys_data *sys) for (i = 0; i < RCAR_PCI_MAX_RESOURCES; i++) { res = &pcie->res[i]; - if (!res->flags) + if (resource_disabled(res)) continue; rcar_pcie_setup_window(i, pcie);
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index ee0ebff..808d08b 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c@@ -438,7 +438,7 @@ found: res = &dev->resource[i + PCI_IOV_RESOURCES]; bar64 = __pci_read_base(dev, pci_bar_unknown, res, pos + PCI_SRIOV_BAR + i * 4); - if (!res->flags) + if (resource_disabled(res)) continue; if (resource_size(res) & (PAGE_SIZE - 1)) { rc = -EIO;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 14bdbca..5440fb1 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c@@ -2129,7 +2129,7 @@ void pci_bus_release_busn_res(struct pci_bus *b) struct resource *res = &b->busn_res; int ret; - if (!res->flags || !res->parent) + if (resource_disabled(res) || !res->parent) return; ret = release_resource(res);
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index a2945a4..abbc2ac 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c@@ -337,7 +337,7 @@ static void quirk_bar_fixed(struct pci_dev *dev) for (i = 0; i < PCI_STD_RESOURCE_END; i++) { struct resource *r = &dev->resource[i]; - if (!r->start || !r->flags) + if (!r->start || resource_disabled(r)) continue; r->flags |= IORESOURCE_PCI_FIXED; }
@@ -351,7 +351,7 @@ static void quirk_allocate_fixed(struct pci_dev *dev) for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; - if (r->parent || + if (r->parent || resource_disabled(r) || !(r->flags & IORESOURCE_PCI_FIXED) || !(r->flags & (IORESOURCE_IO | IORESOURCE_MEM))) continue;
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index eb0ad53..585a9d3 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c@@ -28,7 +28,7 @@ int pci_enable_rom(struct pci_dev *pdev) struct pci_bus_region region; u32 rom_addr; - if (!res->flags) + if (resource_disabled(res)) return -1; pcibios_resource_to_bus(pdev->bus, ®ion, res);
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 7b296b0..b44a327 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c@@ -248,7 +248,7 @@ static void pdev_check_resources(struct pci_dev *dev, if (r->flags & IORESOURCE_PCI_FIXED) continue; - if (!(r->flags) || r->parent) + if (resource_disabled(r) || r->parent) continue; r_align = __pci_resource_alignment(dev, r, realloc_head);
@@ -380,7 +380,7 @@ static void reassign_resources_sorted(struct list_head *realloc_head, list_for_each_entry_safe(add_res, tmp, realloc_head, list) { res = add_res->res; /* skip resource that has been reset */ - if (!res->flags) + if (resource_disabled(res)) goto out; /* skip this resource if not found in head list */
@@ -2144,7 +2144,7 @@ static void pci_bus_dump_res(struct pci_bus *bus) int i; pci_bus_for_each_resource(bus, res, i) { - if (!res || !res->end || !res->flags) + if (!res || !res->end || resource_disabled(res)) continue; dev_printk(KERN_DEBUG, &bus->dev, "resource %d %pR\n", i, res);
@@ -2227,7 +2227,7 @@ static int iov_resources_unassigned(struct pci_dev *dev, void *data) struct pci_bus_region region; /* Not assigned or rejected by kernel? */ - if (!r->flags) + if (resource_disabled(r)) continue; pcibios_resource_to_bus(dev->bus, ®ion, r);
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 26aedde..55caf7a 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c@@ -40,7 +40,7 @@ void pci_update_resource(struct pci_dev *dev, int resno) * Ignore resources for unimplemented BARs and unused resource slots * for 64 bit BARs. */ - if (!res->flags) + if (resource_disabled(res)) return; if (res->flags & IORESOURCE_UNSET)
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 27dbb18..fb21179 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h@@ -179,6 +179,10 @@ static inline bool resource_contains(struct resource *r1, struct resource *r2) return r1->start <= r2->start && r1->end >= r2->end; } +static inline bool resource_disabled(struct resource *r) +{ + return !r->flags || (r->flags & IORESOURCE_DISABLED); +} /* Convenience shorthand with allocation */ #define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name), 0)
--
1.8.4.5