From 09cc900632400079619e9154604fd299c2cc9a5a Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Thu, 30 Mar 2023 19:24:30 +0300 Subject: PCI: Introduce pci_dev_for_each_resource() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Instead of open-coding it everywhere introduce a tiny helper that can be used to iterate over each resource of a PCI device, and convert the most obvious users into it. While at it drop doubled empty line before pdev_sort_resources(). No functional changes intended. Suggested-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230330162434.35055-4-andriy.shevchenko@linux.intel.com Signed-off-by: Mika Westerberg Signed-off-by: Andy Shevchenko Signed-off-by: Bjorn Helgaas Reviewed-by: Krzysztof Wilczyński --- arch/powerpc/kernel/pci-common.c | 21 +++++++++++---------- arch/powerpc/platforms/4xx/pci.c | 8 ++++---- arch/powerpc/platforms/52xx/mpc52xx_pci.c | 5 ++--- arch/powerpc/platforms/pseries/pci.c | 16 ++++++++-------- 4 files changed, 25 insertions(+), 25 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index d67cf79bf5d0..e88d7c9feeec 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -880,6 +880,7 @@ int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge) static void pcibios_fixup_resources(struct pci_dev *dev) { struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct resource *res; int i; if (!hose) { @@ -891,9 +892,9 @@ static void pcibios_fixup_resources(struct pci_dev *dev) if (dev->is_virtfn) return; - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - struct resource *res = dev->resource + i; + pci_dev_for_each_resource(dev, res, i) { struct pci_bus_region reg; + if (!res->flags) continue; @@ -1452,11 +1453,10 @@ void pcibios_claim_one_bus(struct pci_bus *bus) struct pci_bus *child_bus; list_for_each_entry(dev, &bus->devices, bus_list) { + struct resource *r; int i; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *r = &dev->resource[i]; - + pci_dev_for_each_resource(dev, r, i) { if (r->parent || !r->start || !r->flags) continue; @@ -1705,19 +1705,20 @@ EXPORT_SYMBOL_GPL(pcibios_scan_phb); static void fixup_hide_host_resource_fsl(struct pci_dev *dev) { - int i, class = dev->class >> 8; + int class = dev->class >> 8; /* When configured as agent, programming interface = 1 */ int prog_if = dev->class & 0xf; + struct resource *r; if ((class == PCI_CLASS_PROCESSOR_POWERPC || class == PCI_CLASS_BRIDGE_OTHER) && (dev->hdr_type == PCI_HEADER_TYPE_NORMAL) && (prog_if == 0) && (dev->bus->parent == NULL)) { - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - dev->resource[i].start = 0; - dev->resource[i].end = 0; - dev->resource[i].flags = 0; + pci_dev_for_each_resource(dev, r) { + r->start = 0; + r->end = 0; + r->flags = 0; } } } diff --git a/arch/powerpc/platforms/4xx/pci.c b/arch/powerpc/platforms/4xx/pci.c index ca5dd7a5842a..07dcc2b8007f 100644 --- a/arch/powerpc/platforms/4xx/pci.c +++ b/arch/powerpc/platforms/4xx/pci.c @@ -57,7 +57,7 @@ static inline int ppc440spe_revA(void) static void fixup_ppc4xx_pci_bridge(struct pci_dev *dev) { struct pci_controller *hose; - int i; + struct resource *r; if (dev->devfn != 0 || dev->bus->self != NULL) return; @@ -79,9 +79,9 @@ static void fixup_ppc4xx_pci_bridge(struct pci_dev *dev) /* Hide the PCI host BARs from the kernel as their content doesn't * fit well in the resource management */ - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - dev->resource[i].start = dev->resource[i].end = 0; - dev->resource[i].flags = 0; + pci_dev_for_each_resource(dev, r) { + r->start = r->end = 0; + r->flags = 0; } printk(KERN_INFO "PCI: Hiding 4xx host bridge resources %s\n", diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pci.c b/arch/powerpc/platforms/52xx/mpc52xx_pci.c index 859e2818c43d..0ca4401ba781 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_pci.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_pci.c @@ -327,14 +327,13 @@ mpc52xx_pci_setup(struct pci_controller *hose, static void mpc52xx_pci_fixup_resources(struct pci_dev *dev) { - int i; + struct resource *res; pr_debug("%s() %.4x:%.4x\n", __func__, dev->vendor, dev->device); /* We don't rely on boot loader for PCI and resets all devices */ - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - struct resource *res = &dev->resource[i]; + pci_dev_for_each_resource(dev, res) { if (res->end > res->start) { /* Only valid resources */ res->end -= res->start; res->start = 0; diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c index 60e0a58928ef..1772ae3d193d 100644 --- a/arch/powerpc/platforms/pseries/pci.c +++ b/arch/powerpc/platforms/pseries/pci.c @@ -240,7 +240,7 @@ void __init pSeries_final_fixup(void) */ static void fixup_winbond_82c105(struct pci_dev* dev) { - int i; + struct resource *r; unsigned int reg; if (!machine_is(pseries)) @@ -251,14 +251,14 @@ static void fixup_winbond_82c105(struct pci_dev* dev) /* Enable LEGIRQ to use INTC instead of ISA interrupts */ pci_write_config_dword(dev, 0x40, reg | (1<<11)); - for (i = 0; i < DEVICE_COUNT_RESOURCE; ++i) { + pci_dev_for_each_resource(dev, r) { /* zap the 2nd function of the winbond chip */ - if (dev->resource[i].flags & IORESOURCE_IO - && dev->bus->number == 0 && dev->devfn == 0x81) - dev->resource[i].flags &= ~IORESOURCE_IO; - if (dev->resource[i].start == 0 && dev->resource[i].end) { - dev->resource[i].flags = 0; - dev->resource[i].end = 0; + if (dev->bus->number == 0 && dev->devfn == 0x81 && + r->flags & IORESOURCE_IO) + r->flags &= ~IORESOURCE_IO; + if (r->start == 0 && r->end) { + r->flags = 0; + r->end = 0; } } } -- cgit v1.2.3