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Wysocki" , =?utf-8?q?Pali_Roh=C3=A1r?= , Juergen Gross , Dominik Brodowski , linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, linux-pci@vger.kernel.org, xen-devel@lists.xenproject.org Cc: Miguel Ojeda , Richard Henderson , Ivan Kokshaysky , Matt Turner , Russell King , Thomas Bogendoerfer , Nicholas Piggin , Christophe Leroy , "David S. Miller" , Bjorn Helgaas , Stefano Stabellini , Oleksandr Tyshchenko Subject: [PATCH v3 2/4] PCI: Split pci_bus_for_each_resource_p() out of pci_bus_for_each_resource() Date: Mon, 14 Nov 2022 20:58:20 +0200 Message-Id: <20221114185822.65038-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221114185822.65038-1-andriy.shevchenko@linux.intel.com> References: <20221114185822.65038-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 X-Spam-Status: No, score=-7.0 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org Refactor pci_bus_for_each_resource() in the same way as it's done in pci_dev_for_each_resource() case. This will allow to hide iterator inside the loop, where it's not used otherwise. No functional changes intended. Signed-off-by: Andy Shevchenko --- .clang-format | 1 + drivers/pci/bus.c | 7 +++---- drivers/pci/hotplug/shpchp_sysfs.c | 8 ++++---- drivers/pci/pci.c | 5 ++--- drivers/pci/probe.c | 2 +- drivers/pci/setup-bus.c | 10 ++++------ include/linux/pci.h | 14 ++++++++++---- 7 files changed, 25 insertions(+), 22 deletions(-) diff --git a/.clang-format b/.clang-format index 08d579fea6cf..b61fd8791346 100644 --- a/.clang-format +++ b/.clang-format @@ -520,6 +520,7 @@ ForEachMacros: - 'of_property_for_each_string' - 'of_property_for_each_u32' - 'pci_bus_for_each_resource' + - 'pci_bus_for_each_resource_p' - 'pci_dev_for_each_resource' - 'pci_dev_for_each_resource_p' - 'pci_doe_for_each_off' diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 3cef835b375f..fc8e9c11c5f2 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -161,13 +161,13 @@ static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res, void *alignf_data, struct pci_bus_region *region) { - int i, ret; struct resource *r, avail; resource_size_t max; + int ret; type_mask |= IORESOURCE_TYPE_BITS; - pci_bus_for_each_resource(bus, r, i) { + pci_bus_for_each_resource_p(bus, r) { resource_size_t min_used = min; if (!r) @@ -264,9 +264,8 @@ bool pci_bus_clip_resource(struct pci_dev *dev, int idx) struct resource *res = &dev->resource[idx]; struct resource orig_res = *res; struct resource *r; - int i; - pci_bus_for_each_resource(bus, r, i) { + pci_bus_for_each_resource_p(bus, r) { resource_size_t start, end; if (!r) diff --git a/drivers/pci/hotplug/shpchp_sysfs.c b/drivers/pci/hotplug/shpchp_sysfs.c index 64beed7a26be..ff04f0c5e7c3 100644 --- a/drivers/pci/hotplug/shpchp_sysfs.c +++ b/drivers/pci/hotplug/shpchp_sysfs.c @@ -24,16 +24,16 @@ static ssize_t show_ctrl(struct device *dev, struct device_attribute *attr, char *buf) { struct pci_dev *pdev; - int index, busnr; struct resource *res; struct pci_bus *bus; size_t len = 0; + int busnr; pdev = to_pci_dev(dev); bus = pdev->subordinate; len += sysfs_emit_at(buf, len, "Free resources: memory\n"); - pci_bus_for_each_resource(bus, res, index) { + pci_bus_for_each_resource_p(bus, res) { if (res && (res->flags & IORESOURCE_MEM) && !(res->flags & IORESOURCE_PREFETCH)) { len += sysfs_emit_at(buf, len, @@ -43,7 +43,7 @@ static ssize_t show_ctrl(struct device *dev, struct device_attribute *attr, char } } len += sysfs_emit_at(buf, len, "Free resources: prefetchable memory\n"); - pci_bus_for_each_resource(bus, res, index) { + pci_bus_for_each_resource_p(bus, res) { if (res && (res->flags & IORESOURCE_MEM) && (res->flags & IORESOURCE_PREFETCH)) { len += sysfs_emit_at(buf, len, @@ -53,7 +53,7 @@ static ssize_t show_ctrl(struct device *dev, struct device_attribute *attr, char } } len += sysfs_emit_at(buf, len, "Free resources: IO\n"); - pci_bus_for_each_resource(bus, res, index) { + pci_bus_for_each_resource_p(bus, res) { if (res && (res->flags & IORESOURCE_IO)) { len += sysfs_emit_at(buf, len, "start = %8.8llx, length = %8.8llx\n", diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 9f3cc829dfee..9cb9939f0e79 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -782,9 +782,8 @@ struct resource *pci_find_parent_resource(const struct pci_dev *dev, { const struct pci_bus *bus = dev->bus; struct resource *r; - int i; - pci_bus_for_each_resource(bus, r, i) { + pci_bus_for_each_resource_p(bus, r) { if (!r) continue; if (resource_contains(r, res)) { @@ -802,7 +801,7 @@ struct resource *pci_find_parent_resource(const struct pci_dev *dev, * be both a positively-decoded aperture and a * subtractively-decoded region that contain the BAR. * We want the positively-decoded one, so this depends - * on pci_bus_for_each_resource() giving us those + * on pci_bus_for_each_resource_p() giving us those * first. */ return r; diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 1e234189aff1..8ec59b895c60 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -533,7 +533,7 @@ void pci_read_bridge_bases(struct pci_bus *child) pci_read_bridge_mmio_pref(child); if (dev->transparent) { - pci_bus_for_each_resource(child->parent, res, i) { + pci_bus_for_each_resource_p(child->parent, res) { if (res && res->flags) { pci_bus_add_resource(child, res, PCI_SUBTRACTIVE_DECODE); diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 7ba5f1ca0e38..1e9896eaf89c 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -770,9 +770,8 @@ static struct resource *find_bus_resource_of_type(struct pci_bus *bus, unsigned long type) { struct resource *r, *r_assigned = NULL; - int i; - pci_bus_for_each_resource(bus, r, i) { + pci_bus_for_each_resource_p(bus, r) { if (r == &ioport_resource || r == &iomem_resource) continue; if (r && (r->flags & type_mask) == type && !r->parent) @@ -1204,7 +1203,7 @@ void __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head) additional_mmio_pref_size = 0; struct resource *pref; struct pci_host_bridge *host; - int hdr_type, i, ret; + int hdr_type, ret; list_for_each_entry(dev, &bus->devices, bus_list) { struct pci_bus *b = dev->subordinate; @@ -1228,7 +1227,7 @@ void __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head) host = to_pci_host_bridge(bus->bridge); if (!host->size_windows) return; - pci_bus_for_each_resource(bus, pref, i) + pci_bus_for_each_resource_p(bus, pref) if (pref && (pref->flags & IORESOURCE_PREFETCH)) break; hdr_type = -1; /* Intentionally invalid - not a PCI device. */ @@ -1333,12 +1332,11 @@ EXPORT_SYMBOL(pci_bus_size_bridges); static void assign_fixed_resource_on_bus(struct pci_bus *b, struct resource *r) { - int i; struct resource *parent_r; unsigned long mask = IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH; - pci_bus_for_each_resource(b, parent_r, i) { + pci_bus_for_each_resource_p(b, parent_r) { if (!parent_r) continue; diff --git a/include/linux/pci.h b/include/linux/pci.h index 010996c2801a..7b2dcadfc457 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1433,10 +1433,16 @@ int devm_request_pci_bus_resources(struct device *dev, /* Temporary until new and working PCI SBR API in place */ int pci_bridge_secondary_bus_reset(struct pci_dev *dev); -#define pci_bus_for_each_resource(bus, res, i) \ - for (i = 0; \ - (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \ - i++) +#define __pci_bus_for_each_resource(bus, res, __i, vartype) \ + for (vartype __i = 0; \ + res = pci_bus_resource_n(bus, __i), __i < PCI_BRIDGE_RESOURCE_NUM; \ + __i++) + +#define pci_bus_for_each_resource(bus, res, i) \ + __pci_bus_for_each_resource(bus, res, i, ) + +#define pci_bus_for_each_resource_p(bus, res) \ + __pci_bus_for_each_resource(bus, res, i, unsigned int) int __must_check pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res, resource_size_t size,