From: Jaewon Kim Date: Fri, 9 Dec 2016 05:05:30 +0000 (+0900) Subject: staging: android: ion: return -ENOMEM in ion_cma_heap allocation failure X-Git-Tag: v4.11-rc1~116^2~513 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=aacd178373413163d051d75c0fcabe65bcc74cea;p=platform%2Fkernel%2Flinux-exynos.git staging: android: ion: return -ENOMEM in ion_cma_heap allocation failure Initial Commit 349c9e138551 ("gpu: ion: add CMA heap") returns -1 in allocation failure. The returned value is passed up to userspace through ioctl. So user can misunderstand error reason as -EPERM(1) rather than -ENOMEM(12). This patch simply changed this to return -ENOMEM. Signed-off-by: Jaewon Kim Acked-by: Laura Abbott Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/android/ion/ion_cma_heap.c b/drivers/staging/android/ion/ion_cma_heap.c index 6c7de74..22b9582 100644 --- a/drivers/staging/android/ion/ion_cma_heap.c +++ b/drivers/staging/android/ion/ion_cma_heap.c @@ -24,8 +24,6 @@ #include "ion.h" #include "ion_priv.h" -#define ION_CMA_ALLOCATE_FAILED -1 - struct ion_cma_heap { struct ion_heap heap; struct device *dev; @@ -59,7 +57,7 @@ static int ion_cma_allocate(struct ion_heap *heap, struct ion_buffer *buffer, info = kzalloc(sizeof(struct ion_cma_buffer_info), GFP_KERNEL); if (!info) - return ION_CMA_ALLOCATE_FAILED; + return -ENOMEM; info->cpu_addr = dma_alloc_coherent(dev, len, &(info->handle), GFP_HIGHUSER | __GFP_ZERO); @@ -88,7 +86,7 @@ free_mem: dma_free_coherent(dev, len, info->cpu_addr, info->handle); err: kfree(info); - return ION_CMA_ALLOCATE_FAILED; + return -ENOMEM; } static void ion_cma_free(struct ion_buffer *buffer)