Commit 81f6527b authored by Akinobu Mita's avatar Akinobu Mita Committed by Linus Torvalds

ia64: use bitmap_find_next_zero_area

Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e756fd80
......@@ -9,6 +9,7 @@
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/bitmap.h>
#include <asm/sn/sn_sal.h>
#include <asm/sn/addrs.h>
#include <asm/sn/io.h>
......@@ -369,7 +370,7 @@ tioca_dma_d48(struct pci_dev *pdev, u64 paddr)
static dma_addr_t
tioca_dma_mapped(struct pci_dev *pdev, unsigned long paddr, size_t req_size)
{
int i, ps, ps_shift, entry, entries, mapsize, last_entry;
int ps, ps_shift, entry, entries, mapsize;
u64 xio_addr, end_xio_addr;
struct tioca_common *tioca_common;
struct tioca_kernel *tioca_kern;
......@@ -410,23 +411,13 @@ tioca_dma_mapped(struct pci_dev *pdev, unsigned long paddr, size_t req_size)
map = tioca_kern->ca_pcigart_pagemap;
mapsize = tioca_kern->ca_pcigart_entries;
entry = find_first_zero_bit(map, mapsize);
while (entry < mapsize) {
last_entry = find_next_bit(map, mapsize, entry);
if (last_entry - entry >= entries)
break;
entry = find_next_zero_bit(map, mapsize, last_entry);
}
if (entry > mapsize) {
entry = bitmap_find_next_zero_area(map, mapsize, 0, entries, 0);
if (entry >= mapsize) {
kfree(ca_dmamap);
goto map_return;
}
for (i = 0; i < entries; i++)
set_bit(entry + i, map);
bitmap_set(map, entry, entries);
bus_addr = tioca_kern->ca_pciap_base + (entry * ps);
......
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