[PATCH] sort the devres mess out

* Split the implementation-agnostic stuff in separate files.
* Make sure that targets using non-default request_irq() pull
  kernel/irq/devres.o
* Introduce new symbols (HAS_IOPORT and HAS_IOMEM) defaulting to positive;
  allow architectures to turn them off (we needed these symbols anyway for
  dependencies of quite a few drivers).
* protect the ioport-related parts of lib/devres.o with CONFIG_HAS_IOPORT.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 296 deletions

diff --git a/lib/iomap.c b/lib/iomap.c
index 4990c736bc4..4d43f37c015 100644
--- a/lib/iomap.c
+++ b/lib/iomap.c
@@ -6,7 +6,6 @@
 #include <linux/pci.h>
 #include <linux/io.h>
 
-#ifdef CONFIG_GENERIC_IOMAP
 #include <linux/module.h>
 
 /*
@@ -256,298 +255,3 @@ void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
 }
 EXPORT_SYMBOL(pci_iomap);
 EXPORT_SYMBOL(pci_iounmap);
-
-#endif /* CONFIG_GENERIC_IOMAP */
-
-/*
- * Generic iomap devres
- */
-static void devm_ioport_map_release(struct device *dev, void *res)
-{
-	ioport_unmap(*(void __iomem **)res);
-}
-
-static int devm_ioport_map_match(struct device *dev, void *res,
-				 void *match_data)
-{
-	return *(void **)res == match_data;
-}
-
-/**
- * devm_ioport_map - Managed ioport_map()
- * @dev: Generic device to map ioport for
- * @port: Port to map
- * @nr: Number of ports to map
- *
- * Managed ioport_map().  Map is automatically unmapped on driver
- * detach.
- */
-void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
-			       unsigned int nr)
-{
-	void __iomem **ptr, *addr;
-
-	ptr = devres_alloc(devm_ioport_map_release, sizeof(*ptr), GFP_KERNEL);
-	if (!ptr)
-		return NULL;
-
-	addr = ioport_map(port, nr);
-	if (addr) {
-		*ptr = addr;
-		devres_add(dev, ptr);
-	} else
-		devres_free(ptr);
-
-	return addr;
-}
-EXPORT_SYMBOL(devm_ioport_map);
-
-/**
- * devm_ioport_unmap - Managed ioport_unmap()
- * @dev: Generic device to unmap for
- * @addr: Address to unmap
- *
- * Managed ioport_unmap().  @addr must have been mapped using
- * devm_ioport_map().
- */
-void devm_ioport_unmap(struct device *dev, void __iomem *addr)
-{
-	ioport_unmap(addr);
-	WARN_ON(devres_destroy(dev, devm_ioport_map_release,
-			       devm_ioport_map_match, (void *)addr));
-}
-EXPORT_SYMBOL(devm_ioport_unmap);
-
-static void devm_ioremap_release(struct device *dev, void *res)
-{
-	iounmap(*(void __iomem **)res);
-}
-
-static int devm_ioremap_match(struct device *dev, void *res, void *match_data)
-{
-	return *(void **)res == match_data;
-}
-
-/**
- * devm_ioremap - Managed ioremap()
- * @dev: Generic device to remap IO address for
- * @offset: BUS offset to map
- * @size: Size of map
- *
- * Managed ioremap().  Map is automatically unmapped on driver detach.
- */
-void __iomem *devm_ioremap(struct device *dev, unsigned long offset,
-			   unsigned long size)
-{
-	void __iomem **ptr, *addr;
-
-	ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
-	if (!ptr)
-		return NULL;
-
-	addr = ioremap(offset, size);
-	if (addr) {
-		*ptr = addr;
-		devres_add(dev, ptr);
-	} else
-		devres_free(ptr);
-
-	return addr;
-}
-EXPORT_SYMBOL(devm_ioremap);
-
-/**
- * devm_ioremap_nocache - Managed ioremap_nocache()
- * @dev: Generic device to remap IO address for
- * @offset: BUS offset to map
- * @size: Size of map
- *
- * Managed ioremap_nocache().  Map is automatically unmapped on driver
- * detach.
- */
-void __iomem *devm_ioremap_nocache(struct device *dev, unsigned long offset,
-				   unsigned long size)
-{
-	void __iomem **ptr, *addr;
-
-	ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
-	if (!ptr)
-		return NULL;
-
-	addr = ioremap_nocache(offset, size);
-	if (addr) {
-		*ptr = addr;
-		devres_add(dev, ptr);
-	} else
-		devres_free(ptr);
-
-	return addr;
-}
-EXPORT_SYMBOL(devm_ioremap_nocache);
-
-/**
- * devm_iounmap - Managed iounmap()
- * @dev: Generic device to unmap for
- * @addr: Address to unmap
- *
- * Managed iounmap().  @addr must have been mapped using devm_ioremap*().
- */
-void devm_iounmap(struct device *dev, void __iomem *addr)
-{
-	iounmap(addr);
-	WARN_ON(devres_destroy(dev, devm_ioremap_release, devm_ioremap_match,
-			       (void *)addr));
-}
-EXPORT_SYMBOL(devm_iounmap);
-
-/*
- * PCI iomap devres
- */
-#define PCIM_IOMAP_MAX	PCI_ROM_RESOURCE
-
-struct pcim_iomap_devres {
-	void __iomem *table[PCIM_IOMAP_MAX];
-};
-
-static void pcim_iomap_release(struct device *gendev, void *res)
-{
-	struct pci_dev *dev = container_of(gendev, struct pci_dev, dev);
-	struct pcim_iomap_devres *this = res;
-	int i;
-
-	for (i = 0; i < PCIM_IOMAP_MAX; i++)
-		if (this->table[i])
-			pci_iounmap(dev, this->table[i]);
-}
-
-/**
- * pcim_iomap_table - access iomap allocation table
- * @pdev: PCI device to access iomap table for
- *
- * Access iomap allocation table for @dev.  If iomap table doesn't
- * exist and @pdev is managed, it will be allocated.  All iomaps
- * recorded in the iomap table are automatically unmapped on driver
- * detach.
- *
- * This function might sleep when the table is first allocated but can
- * be safely called without context and guaranteed to succed once
- * allocated.
- */
-void __iomem * const * pcim_iomap_table(struct pci_dev *pdev)
-{
-	struct pcim_iomap_devres *dr, *new_dr;
-
-	dr = devres_find(&pdev->dev, pcim_iomap_release, NULL, NULL);
-	if (dr)
-		return dr->table;
-
-	new_dr = devres_alloc(pcim_iomap_release, sizeof(*new_dr), GFP_KERNEL);
-	if (!new_dr)
-		return NULL;
-	dr = devres_get(&pdev->dev, new_dr, NULL, NULL);
-	return dr->table;
-}
-EXPORT_SYMBOL(pcim_iomap_table);
-
-/**
- * pcim_iomap - Managed pcim_iomap()
- * @pdev: PCI device to iomap for
- * @bar: BAR to iomap
- * @maxlen: Maximum length of iomap
- *
- * Managed pci_iomap().  Map is automatically unmapped on driver
- * detach.
- */
-void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen)
-{
-	void __iomem **tbl;
-
-	BUG_ON(bar >= PCIM_IOMAP_MAX);
-
-	tbl = (void __iomem **)pcim_iomap_table(pdev);
-	if (!tbl || tbl[bar])	/* duplicate mappings not allowed */
-		return NULL;
-
-	tbl[bar] = pci_iomap(pdev, bar, maxlen);
-	return tbl[bar];
-}
-EXPORT_SYMBOL(pcim_iomap);
-
-/**
- * pcim_iounmap - Managed pci_iounmap()
- * @pdev: PCI device to iounmap for
- * @addr: Address to unmap
- *
- * Managed pci_iounmap().  @addr must have been mapped using pcim_iomap().
- */
-void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr)
-{
-	void __iomem **tbl;
-	int i;
-
-	pci_iounmap(pdev, addr);
-
-	tbl = (void __iomem **)pcim_iomap_table(pdev);
-	BUG_ON(!tbl);
-
-	for (i = 0; i < PCIM_IOMAP_MAX; i++)
-		if (tbl[i] == addr) {
-			tbl[i] = NULL;
-			return;
-		}
-	WARN_ON(1);
-}
-EXPORT_SYMBOL(pcim_iounmap);
-
-/**
- * pcim_iomap_regions - Request and iomap PCI BARs
- * @pdev: PCI device to map IO resources for
- * @mask: Mask of BARs to request and iomap
- * @name: Name used when requesting regions
- *
- * Request and iomap regions specified by @mask.
- */
-int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name)
-{
-	void __iomem * const *iomap;
-	int i, rc;
-
-	iomap = pcim_iomap_table(pdev);
-	if (!iomap)
-		return -ENOMEM;
-
-	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
-		unsigned long len;
-
-		if (!(mask & (1 << i)))
-			continue;
-
-		rc = -EINVAL;
-		len = pci_resource_len(pdev, i);
-		if (!len)
-			goto err_inval;
-
-		rc = pci_request_region(pdev, i, name);
-		if (rc)
-			goto err_region;
-
-		rc = -ENOMEM;
-		if (!pcim_iomap(pdev, i, 0))
-			goto err_iomap;
-	}
-
-	return 0;
-
- err_iomap:
-	pcim_iounmap(pdev, iomap[i]);
- err_region:
-	pci_release_region(pdev, i);
- err_inval:
-	while (--i >= 0) {
-		pcim_iounmap(pdev, iomap[i]);
-		pci_release_region(pdev, i);
-	}
-
-	return rc;
-}
-EXPORT_SYMBOL(pcim_iomap_regions);