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authorChristoph Hellwig <hch@lst.de>2020-06-01 21:50:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-02 10:59:10 -0700
commitb274014c6d191ec92c4921d5e84c90f6ed2f38a0 (patch)
tree3317255fae2acbd546de0160b858b994cf187af1 /drivers
parent515e5b6d90d410a3b0b433853c367936830a45a4 (diff)
powerpc: add an ioremap_phb helper
Factor code shared between pci_64 and electra_cf into a ioremap_pbh helper that follows the normal ioremap semantics, and returns a useful __iomem pointer. Note that it opencodes __ioremap_at as we know from the callers the slab is available. Switch pci_64 to also store the result as __iomem pointer, and unmap the result using iounmap instead of force casting and using vmalloc APIs. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Cc: Gao Xiang <xiang@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Laura Abbott <labbott@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Kelley <mikelley@microsoft.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Sakari Ailus <sakari.ailus@linux.intel.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Wei Liu <wei.liu@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mackerras <paulus@ozlabs.org> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Link: http://lkml.kernel.org/r/20200414131348.444715-7-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pcmcia/electra_cf.c45
1 files changed, 16 insertions, 29 deletions
diff --git a/drivers/pcmcia/electra_cf.c b/drivers/pcmcia/electra_cf.c
index f2741c04289d..35158cfd9c1a 100644
--- a/drivers/pcmcia/electra_cf.c
+++ b/drivers/pcmcia/electra_cf.c
@@ -178,10 +178,9 @@ static int electra_cf_probe(struct platform_device *ofdev)
struct device_node *np = ofdev->dev.of_node;
struct electra_cf_socket *cf;
struct resource mem, io;
- int status;
+ int status = -ENOMEM;
const unsigned int *prop;
int err;
- struct vm_struct *area;
err = of_address_to_resource(np, 0, &mem);
if (err)
@@ -202,30 +201,19 @@ static int electra_cf_probe(struct platform_device *ofdev)
cf->mem_phys = mem.start;
cf->mem_size = PAGE_ALIGN(resource_size(&mem));
cf->mem_base = ioremap(cf->mem_phys, cf->mem_size);
+ if (!cf->mem_base)
+ goto out_free_cf;
cf->io_size = PAGE_ALIGN(resource_size(&io));
-
- area = __get_vm_area(cf->io_size, 0, PHB_IO_BASE, PHB_IO_END);
- if (area == NULL) {
- status = -ENOMEM;
- goto fail1;
- }
-
- cf->io_virt = (void __iomem *)(area->addr);
+ cf->io_virt = ioremap_phb(io.start, cf->io_size);
+ if (!cf->io_virt)
+ goto out_unmap_mem;
cf->gpio_base = ioremap(0xfc103000, 0x1000);
+ if (!cf->gpio_base)
+ goto out_unmap_virt;
dev_set_drvdata(device, cf);
- if (!cf->mem_base || !cf->io_virt || !cf->gpio_base ||
- (__ioremap_at(io.start, cf->io_virt, cf->io_size,
- pgprot_noncached(PAGE_KERNEL)) == NULL)) {
- dev_err(device, "can't ioremap ranges\n");
- status = -ENOMEM;
- goto fail1;
- }
-
-
cf->io_base = (unsigned long)cf->io_virt - VMALLOC_END;
-
cf->iomem.start = (unsigned long)cf->mem_base;
cf->iomem.end = (unsigned long)cf->mem_base + (mem.end - mem.start);
cf->iomem.flags = IORESOURCE_MEM;
@@ -305,14 +293,13 @@ fail1:
if (cf->irq)
free_irq(cf->irq, cf);
- if (cf->io_virt)
- __iounmap_at(cf->io_virt, cf->io_size);
- if (cf->mem_base)
- iounmap(cf->mem_base);
- if (cf->gpio_base)
- iounmap(cf->gpio_base);
- if (area)
- device_init_wakeup(&ofdev->dev, 0);
+ iounmap(cf->gpio_base);
+out_unmap_virt:
+ device_init_wakeup(&ofdev->dev, 0);
+ iounmap(cf->io_virt);
+out_unmap_mem:
+ iounmap(cf->mem_base);
+out_free_cf:
kfree(cf);
return status;
@@ -330,7 +317,7 @@ static int electra_cf_remove(struct platform_device *ofdev)
free_irq(cf->irq, cf);
del_timer_sync(&cf->timer);
- __iounmap_at(cf->io_virt, cf->io_size);
+ iounmap(cf->io_virt);
iounmap(cf->mem_base);
iounmap(cf->gpio_base);
release_mem_region(cf->mem_phys, cf->mem_size);