xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Forkuj 0
Kod Zgłoszenia Oczekujące zmiany Actions Packages Projekty Wydania Wiki Aktywność

IB/amso1100: Use dma_alloc_coherent() instead of kmalloc/dma_map_single

Przeglądaj źródła 
The Ammasso driver needs to use dma_alloc_coherent() for
allocating memory that will be used by the HW for dma.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Steve Wise
2006-10-27 17:28:35 -05:00
zatwierdzone przez Roland Dreier
rodzic 04d03bc576
commit 8de94ce19d
3 zmienionych plików z 32 dodań i 49 usunięć
Ściągnij plik aktualizacji Ściągnij plik porównania Expand all files Collapse all files

18
drivers/infiniband/hw/amso1100/c2_cq.c
Wyświetl plik

@@ -246,20 +246,17 @@ int c2_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify notify)
static void c2_free_cq_buf(struct c2_dev *c2dev, struct c2_mq *mq)
{
dma_unmap_single(c2dev->ibdev.dma_device, pci_unmap_addr(mq, mapping),
mq->q_size * mq->msg_size, DMA_FROM_DEVICE);
free_pages((unsigned long) mq->msg_pool.host,
get_order(mq->q_size * mq->msg_size));
dma_free_coherent(&c2dev->pcidev->dev, mq->q_size * mq->msg_size,
mq->msg_pool.host, pci_unmap_addr(mq, mapping));
}
static int c2_alloc_cq_buf(struct c2_dev *c2dev, struct c2_mq *mq, int q_size,
int msg_size)
{
unsigned long pool_start;
u8 *pool_start;
pool_start = __get_free_pages(GFP_KERNEL,
get_order(q_size * msg_size));
pool_start = dma_alloc_coherent(&c2dev->pcidev->dev, q_size * msg_size,
&mq->host_dma, GFP_KERNEL);
if (!pool_start)
return -ENOMEM;
@@ -267,13 +264,10 @@ static int c2_alloc_cq_buf(struct c2_dev *c2dev, struct c2_mq *mq, int q_size,
0, /* index (currently unknown) */
q_size,
msg_size,
(u8 *) pool_start,
pool_start,
NULL, /* peer (currently unknown) */
C2_MQ_HOST_TARGET);
mq->host_dma = dma_map_single(c2dev->ibdev.dma_device,
(void *)pool_start,
q_size * msg_size, DMA_FROM_DEVICE);
pci_unmap_addr_set(mq, mapping, mq->host_dma);
return 0;