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ALSA: emu10k1 - fix possible memory leak in memory allocation routines

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The leak was introduced in "[ALSA] emu10k1 - simplify page allocation
for synth" commit.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2008-06-17 16:20:13 +02:00
parent 6719292af5
commit 9f515b6898
1 changed files with 8 additions and 2 deletions
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10
sound/pci/emu10k1/memory.c
View file

@ -464,11 +464,17 @@ static int synth_alloc_pages(struct snd_emu10k1 *emu, struct snd_emu10k1_memblk
/* first try to allocate from <4GB zone */
struct page *p = alloc_page(GFP_KERNEL | GFP_DMA32 |
__GFP_NOWARN);
if (!p || (page_to_pfn(p) & ~(emu->dma_mask >> PAGE_SHIFT)))
if (!p || (page_to_pfn(p) & ~(emu->dma_mask >> PAGE_SHIFT))) {
/* try to allocate from <16MB zone */
p = alloc_page(GFP_ATOMIC | GFP_DMA |
struct page *p1 =
alloc_page(GFP_ATOMIC | GFP_DMA |
__GFP_NORETRY | /* no OOM-killer */
__GFP_NOWARN);
/* free page outside dma_mask range */
if (p)
free_page((unsigned long)page_address(p));
p = p1;
}
if (!p) {
__synth_free_pages(emu, first_page, page - 1);
return -ENOMEM;