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| author | Suren A. Chilingaryan <csa@suren.me> | 2014-04-02 23:28:35 +0200 |
|---|---|---|
| committer | Suren A. Chilingaryan <csa@suren.me> | 2014-04-02 23:28:35 +0200 |
| commit | d8c13eb6ff5a1c9cc28617d83dbde454c7222be4 (patch) | |
| tree | 41df427123d96b0887a0c86e9bbfb44c4ba7109f | |
| parent | e6a8592b05d25d33eaaa8241f5081b1099f56fd0 (diff) | |
| download | pcitool-d8c13eb6ff5a1c9cc28617d83dbde454c7222be4.tar.gz pcitool-d8c13eb6ff5a1c9cc28617d83dbde454c7222be4.tar.bz2 pcitool-d8c13eb6ff5a1c9cc28617d83dbde454c7222be4.tar.xz pcitool-d8c13eb6ff5a1c9cc28617d83dbde454c7222be4.zip | |
Add __GFP_DMA flag while allocating DMA buffers
| -rw-r--r-- | driver/kmem.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/driver/kmem.c b/driver/kmem.c index 0da37bb..f6e22a1 100644 --- a/driver/kmem.c +++ b/driver/kmem.c @@ -37,6 +37,7 @@ */ int pcidriver_kmem_alloc(pcidriver_privdata_t *privdata, kmem_handle_t *kmem_handle) { + int flags; pcidriver_kmem_entry_t *kmem_entry; void *retptr; @@ -135,7 +136,12 @@ int pcidriver_kmem_alloc(pcidriver_privdata_t *privdata, kmem_handle_t *kmem_han retptr = pci_alloc_consistent( privdata->pdev, kmem_handle->size, &(kmem_entry->dma_handle) ); break; case PCILIB_KMEM_TYPE_PAGE: - retptr = (void*)__get_free_pages(GFP_KERNEL, get_order(PAGE_SIZE)); + flags = GFP_KERNEL; + + if ((kmem_entry->type == PCILIB_KMEM_TYPE_DMA_S2C_PAGE)||(kmem_entry->type == PCILIB_KMEM_TYPE_DMA_C2S_PAGE)) + flags |= __GFP_DMA; + + retptr = (void*)__get_free_pages(flags, get_order(PAGE_SIZE)); kmem_entry->dma_handle = 0; kmem_handle->size = PAGE_SIZE; |