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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2009-12-16 00:48:30 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-16 15:20:21 (GMT) |
| commit | 81f6527bd322ef1f3a58c2c438b9ded3bd8f606a (patch) | |
| tree | 0318a64f7545e4f995cbe67b263adf7f4d7bab44 /arch/ia64/sn/pci | |
| parent | e756fd8080622998007b592bd33f86cecf56587a (diff) | |
| download | linux-81f6527bd322ef1f3a58c2c438b9ded3bd8f606a.tar.xz | |
ia64: use bitmap_find_next_zero_area
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/ia64/sn/pci')
| -rw-r--r-- | arch/ia64/sn/pci/tioca_provider.c | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/arch/ia64/sn/pci/tioca_provider.c b/arch/ia64/sn/pci/tioca_provider.c index 35b2a27..efb4545 100644 --- a/arch/ia64/sn/pci/tioca_provider.c +++ b/arch/ia64/sn/pci/tioca_provider.c @@ -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); |