Commit a0e997c2 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven
Browse files

sparc: iounmap() and *_free_coherent() - Use lookup_resource()



Replace a custom implementation (which doesn't lock the resource tree) by a
call to lookup_resource()
Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 217bbd81
......@@ -65,9 +65,6 @@ static inline void dma_make_coherent(unsigned long pa, unsigned long len)
}
#endif
static struct resource *_sparc_find_resource(struct resource *r,
unsigned long);
static void __iomem *_sparc_ioremap(struct resource *res, u32 bus, u32 pa, int sz);
static void __iomem *_sparc_alloc_io(unsigned int busno, unsigned long phys,
unsigned long size, char *name);
......@@ -143,7 +140,11 @@ void iounmap(volatile void __iomem *virtual)
unsigned long vaddr = (unsigned long) virtual & PAGE_MASK;
struct resource *res;
if ((res = _sparc_find_resource(&sparc_iomap, vaddr)) == NULL) {
/*
* XXX Too slow. Can have 8192 DVMA pages on sun4m in the worst case.
* This probably warrants some sort of hashing.
*/
if ((res = lookup_resource(&sparc_iomap, vaddr)) == NULL) {
printk("free_io/iounmap: cannot free %lx\n", vaddr);
return;
}
......@@ -319,7 +320,7 @@ static void sbus_free_coherent(struct device *dev, size_t n, void *p,
struct resource *res;
struct page *pgv;
if ((res = _sparc_find_resource(&_sparc_dvma,
if ((res = lookup_resource(&_sparc_dvma,
(unsigned long)p)) == NULL) {
printk("sbus_free_consistent: cannot free %p\n", p);
return;
......@@ -492,7 +493,7 @@ static void pci32_free_coherent(struct device *dev, size_t n, void *p,
{
struct resource *res;
if ((res = _sparc_find_resource(&_sparc_dvma,
if ((res = lookup_resource(&_sparc_dvma,
(unsigned long)p)) == NULL) {
printk("pci_free_consistent: cannot free %p\n", p);
return;
......@@ -715,25 +716,6 @@ static const struct file_operations sparc_io_proc_fops = {
};
#endif /* CONFIG_PROC_FS */
/*
* This is a version of find_resource and it belongs to kernel/resource.c.
* Until we have agreement with Linus and Martin, it lingers here.
*
* XXX Too slow. Can have 8192 DVMA pages on sun4m in the worst case.
* This probably warrants some sort of hashing.
*/
static struct resource *_sparc_find_resource(struct resource *root,
unsigned long start)
{
struct resource *tmp;
for (tmp = root->child; tmp != 0; tmp = tmp->sibling) {
if (tmp->start == start)
return tmp;
}
return NULL;
}
static void register_proc_sparc_ioport(void)
{
#ifdef CONFIG_PROC_FS
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment