dmaengine: dmatest: Remove use of VLAs (72ef08bf) · Commits · 戴 / test

drivers/dma/dmatest.c

+13 −3

Original line number	Diff line number	Diff line
		@@ -468,6 +468,8 @@ static int dmatest_func(void *data)
		unsigned long long total_len = 0;
		u8 align = 0;
		bool is_memset = false;
		dma_addr_t *srcs;
		dma_addr_t *dma_pq;

		set_freezable();

		@@ -551,6 +553,14 @@ static int dmatest_func(void *data)

		set_user_nice(current, 10);

		srcs = kcalloc(src_cnt, sizeof(dma_addr_t), GFP_KERNEL);
		if (!srcs)
		goto err_dstbuf;

		dma_pq = kcalloc(dst_cnt, sizeof(dma_addr_t), GFP_KERNEL);
		if (!dma_pq)
		goto err_srcs_array;

		/*
		* src and dst buffers are freed by ourselves below
		*/
		@@ -561,7 +571,6 @@ static int dmatest_func(void *data)
		&& !(params->iterations && total_tests >= params->iterations)) {
		struct dma_async_tx_descriptor *tx = NULL;
		struct dmaengine_unmap_data *um;
		dma_addr_t srcs[src_cnt];
		dma_addr_t *dsts;
		unsigned int src_off, dst_off, len;

		@@ -676,8 +685,6 @@ static int dmatest_func(void *data)
		srcs, src_cnt,
		len, flags);
		else if (thread->type == DMA_PQ) {
		dma_addr_t dma_pq[dst_cnt];

		for (i = 0; i < dst_cnt; i++)
		dma_pq[i] = dsts[i] + dst_off;
		tx = dev->device_prep_dma_pq(chan, dma_pq, srcs,
		@@ -779,6 +786,9 @@ static int dmatest_func(void *data)
		runtime = ktime_to_us(ktime);

		ret = 0;
		kfree(dma_pq);
		err_srcs_array:
		kfree(srcs);
		err_dstbuf:
		for (i = 0; thread->udsts[i]; i++)
		kfree(thread->udsts[i]);