dmaengine: edma: Check the memory allocation for the memcpy dma device (f31b3236) · Commits · 戴 / test

drivers/dma/edma.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -1876,6 +1876,11 @@ static void edma_dma_init(struct edma_cc *ecc, bool legacy_mode)

		if (memcpy_channels) {
		m_ddev = devm_kzalloc(ecc->dev, sizeof(*m_ddev), GFP_KERNEL);
		if (!m_ddev) {
		dev_warn(ecc->dev, "memcpy is disabled due to OoM\n");
		memcpy_channels = NULL;
		goto ch_setup;
		}
		ecc->dma_memcpy = m_ddev;

		dma_cap_zero(m_ddev->cap_mask);
		@@ -1903,6 +1908,7 @@ static void edma_dma_init(struct edma_cc *ecc, bool legacy_mode)
		dev_info(ecc->dev, "memcpy is disabled\n");
		}

		ch_setup:
		for (i = 0; i < ecc->num_channels; i++) {
		struct edma_chan *echan = &ecc->slave_chans[i];
		echan->ch_num = EDMA_CTLR_CHAN(ecc->id, i);