diff options
Diffstat (limited to 'arch/blackfin/kernel/dma-mapping.c')
| -rw-r--r-- | arch/blackfin/kernel/dma-mapping.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/blackfin/kernel/dma-mapping.c b/arch/blackfin/kernel/dma-mapping.c index e74e74d7733f..be81572b89c2 100644 --- a/arch/blackfin/kernel/dma-mapping.c +++ b/arch/blackfin/kernel/dma-mapping.c @@ -19,7 +19,7 @@ #include <asm/bfin-global.h> static spinlock_t dma_page_lock; -static unsigned int *dma_page; +static unsigned long *dma_page; static unsigned int dma_pages; static unsigned long dma_base; static unsigned long dma_size; @@ -30,7 +30,7 @@ void dma_alloc_init(unsigned long start, unsigned long end) spin_lock_init(&dma_page_lock); dma_initialized = 0; - dma_page = (unsigned int *)__get_free_page(GFP_KERNEL); + dma_page = (unsigned long *)__get_free_page(GFP_KERNEL); memset(dma_page, 0, PAGE_SIZE); dma_base = PAGE_ALIGN(start); dma_size = PAGE_ALIGN(end) - PAGE_ALIGN(start); @@ -58,10 +58,11 @@ static unsigned long __alloc_dma_pages(unsigned int pages) spin_lock_irqsave(&dma_page_lock, flags); for (i = 0; i < dma_pages;) { - if (dma_page[i++] == 0) { + if (test_bit(i++, dma_page) == 0) { if (++count == pages) { while (count--) - dma_page[--i] = 1; + __set_bit(--i, dma_page); + ret = dma_base + (i << PAGE_SHIFT); break; } @@ -84,9 +85,9 @@ static void __free_dma_pages(unsigned long addr, unsigned int pages) } spin_lock_irqsave(&dma_page_lock, flags); - for (i = page; i < page + pages; i++) { - dma_page[i] = 0; - } + for (i = page; i < page + pages; i++) + __clear_bit(i, dma_page); + spin_unlock_irqrestore(&dma_page_lock, flags); } |
