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charset="utf-8" From: Wendy Liang dma_alloc_noncoherent() returns NULL on failure, but callers of aie2_alloc_msg_buffer() check for IS_ERR(). Return ERR_PTR(-ENOMEM) instead of NULL to match the amdxdna_iommu_alloc() path and the caller's error checking convention. Fixes: ece3e8980907 ("accel/amdxdna: Allow forcing IOVA-based DMA via modul= e parameter") Signed-off-by: Wendy Liang Signed-off-by: Lizhi Hou Reviewed-by: Karol Wachowski Reviewed-by: Mario Limonciello (AMD) --- drivers/accel/amdxdna/aie2_message.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/accel/amdxdna/aie2_message.c b/drivers/accel/amdxdna/a= ie2_message.c index 7e219a5eda56..a1c546c3e81c 100644 --- a/drivers/accel/amdxdna/aie2_message.c +++ b/drivers/accel/amdxdna/aie2_message.c @@ -56,6 +56,7 @@ void *aie2_alloc_msg_buffer(struct amdxdna_dev_hdl *ndev,= u32 *size, dma_addr_t *dma_addr) { struct amdxdna_dev *xdna =3D ndev->xdna; + void *vaddr; int order; =20 *size =3D max(*size, SZ_8K); @@ -67,8 +68,12 @@ void *aie2_alloc_msg_buffer(struct amdxdna_dev_hdl *ndev= , u32 *size, if (amdxdna_iova_on(xdna)) return amdxdna_iommu_alloc(xdna, *size, dma_addr); =20 - return dma_alloc_noncoherent(xdna->ddev.dev, *size, dma_addr, + vaddr =3D dma_alloc_noncoherent(xdna->ddev.dev, *size, dma_addr, DMA_FROM_DEVICE, GFP_KERNEL); + if (!vaddr) + return ERR_PTR(-ENOMEM); + + return vaddr; } =20 void aie2_free_msg_buffer(struct amdxdna_dev_hdl *ndev, size_t size, --=20 2.34.1