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Wysocki" , Niklas Schnelle , =?UTF-8?q?Pali=20Roh=C3=A1r?= , "Maciej W. Rozycki" , 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, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-pci@vger.kernel.org, xen-devel@lists.xenproject.org, linux-acpi@vger.kernel.org Cc: Miguel Ojeda , Richard Henderson , Ivan Kokshaysky , Matt Turner , Russell King , Andrew Lunn , Sebastian Hesselbarth , Gregory Clement , Thomas Bogendoerfer , Nicholas Piggin , Christophe Leroy , Anatolij Gustschin , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , "David S. Miller" , Bjorn Helgaas , Stefano Stabellini , Oleksandr Tyshchenko Subject: [PATCH v4 2/4] PCI: Split pci_bus_for_each_resource_p() out of pci_bus_for_each_resource() Date: Fri, 10 Mar 2023 19:14:14 +0200 Message-Id: <20230310171416.23356-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230310171416.23356-1-andriy.shevchenko@linux.intel.com> References: <20230310171416.23356-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1678468471962100002 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 Reviewed-by: Krzysztof Wilczy=C5=84ski --- .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 266abb843654..81c9f055086f 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 83ae838ceb5f..b48bcc965a42 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; =20 type_mask |=3D IORESOURCE_TYPE_BITS; =20 - pci_bus_for_each_resource(bus, r, i) { + pci_bus_for_each_resource_p(bus, r) { resource_size_t min_used =3D min; =20 if (!r) @@ -268,9 +268,8 @@ bool pci_bus_clip_resource(struct pci_dev *dev, int idx) struct resource *res =3D &dev->resource[idx]; struct resource orig_res =3D *res; struct resource *r; - int i; =20 - pci_bus_for_each_resource(bus, r, i) { + pci_bus_for_each_resource_p(bus, r) { resource_size_t start, end; =20 if (!r) diff --git a/drivers/pci/hotplug/shpchp_sysfs.c b/drivers/pci/hotplug/shpch= p_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 =3D 0; + int busnr; =20 pdev =3D to_pci_dev(dev); bus =3D pdev->subordinate; =20 len +=3D 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 +=3D sysfs_emit_at(buf, len, @@ -43,7 +43,7 @@ static ssize_t show_ctrl(struct device *dev, struct devic= e_attribute *attr, char } } len +=3D 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 +=3D sysfs_emit_at(buf, len, @@ -53,7 +53,7 @@ static ssize_t show_ctrl(struct device *dev, struct devic= e_attribute *attr, char } } len +=3D 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 +=3D sysfs_emit_at(buf, len, "start =3D %8.8llx, length =3D %8.8llx\n", diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 7a67611dc5f4..2f8915ab41ef 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -779,9 +779,8 @@ struct resource *pci_find_parent_resource(const struct = pci_dev *dev, { const struct pci_bus *bus =3D dev->bus; struct resource *r; - int i; =20 - pci_bus_for_each_resource(bus, r, i) { + pci_bus_for_each_resource_p(bus, r) { if (!r) continue; if (resource_contains(r, res)) { @@ -799,7 +798,7 @@ 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 a3f68b6ba6ac..5ada4c155d3c 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); =20 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 d4fc7665f70a..d6ead027255f 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(struc= t pci_bus *bus, unsigned long type) { struct resource *r, *r_assigned =3D NULL; - int i; =20 - pci_bus_for_each_resource(bus, r, i) { + pci_bus_for_each_resource_p(bus, r) { if (r =3D=3D &ioport_resource || r =3D=3D &iomem_resource) continue; if (r && (r->flags & type_mask) =3D=3D type && !r->parent) @@ -1204,7 +1203,7 @@ void __pci_bus_size_bridges(struct pci_bus *bus, stru= ct list_head *realloc_head) additional_mmio_pref_size =3D 0; struct resource *pref; struct pci_host_bridge *host; - int hdr_type, i, ret; + int hdr_type, ret; =20 list_for_each_entry(dev, &bus->devices, bus_list) { struct pci_bus *b =3D dev->subordinate; @@ -1228,7 +1227,7 @@ void __pci_bus_size_bridges(struct pci_bus *bus, stru= ct list_head *realloc_head) host =3D 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 =3D -1; /* Intentionally invalid - not a PCI device. */ @@ -1333,12 +1332,11 @@ EXPORT_SYMBOL(pci_bus_size_bridges); =20 static void assign_fixed_resource_on_bus(struct pci_bus *b, struct resourc= e *r) { - int i; struct resource *parent_r; unsigned long mask =3D IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH; =20 - pci_bus_for_each_resource(b, parent_r, i) { + pci_bus_for_each_resource_p(b, parent_r) { if (!parent_r) continue; =20 diff --git a/include/linux/pci.h b/include/linux/pci.h index 670f01c5538c..aac72c247bed 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1456,10 +1456,16 @@ int devm_request_pci_bus_resources(struct device *d= ev, /* Temporary until new and working PCI SBR API in place */ int pci_bridge_secondary_bus_reset(struct pci_dev *dev); =20 -#define pci_bus_for_each_resource(bus, res, i) \ - for (i =3D 0; \ - (res =3D 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 =3D 0; \ + res =3D 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) =20 int __must_check pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res, resource_size_t size, --=20 2.39.1