[PATCH 3/7] S3C64XX DMA: Debugged alloc's with GFP_KERNEL flag in Intr context.
Jassi
jassi.brar at samsung.com
Tue Sep 15 06:01:20 EDT 2009
s3c2410_dma_enqueue makes call to kzalloc and dma_pool_alloc with GFP_KERNEL
flag set, this can be an issue for drivers, like I2S, which call s3c2410_dma_enqueue
from dma-bufferdone callback.
Changed the flag GFP_KERNEL to GFP_ATOMIC.
Signed-Off-by: Jassi <jassi.brar at samsung.com>
---
arch/arm/plat-s3c64xx/dma.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/plat-s3c64xx/dma.c b/arch/arm/plat-s3c64xx/dma.c
index b26d2a2..266a107 100644
--- a/arch/arm/plat-s3c64xx/dma.c
+++ b/arch/arm/plat-s3c64xx/dma.c
@@ -345,13 +345,13 @@ int s3c2410_dma_enqueue(unsigned int channel, void *id,
if (!chan)
return -EINVAL;
- buff = kzalloc(sizeof(struct s3c64xx_dma_buff), GFP_KERNEL);
+ buff = kzalloc(sizeof(struct s3c64xx_dma_buff), GFP_ATOMIC);
if (!buff) {
printk(KERN_ERR "%s: no memory for buffer\n", __func__);
return -ENOMEM;
}
- lli = dma_pool_alloc(dma_pool, GFP_KERNEL, &buff->lli_dma);
+ lli = dma_pool_alloc(dma_pool, GFP_ATOMIC, &buff->lli_dma);
if (!lli) {
printk(KERN_ERR "%s: no memory for lli\n", __func__);
ret = -ENOMEM;
--
1.6.2.5
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