linux-kernel - [PATCH v3 3/8] mtd: spi-nor: cadence-quadspi: Don't initialize rx_dma

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Date:   Mon, 1 Jun 2020 11:17:20 +0530
From:   Vignesh Raghavendra <vigneshr@...com>
To:     Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Mark Brown <broonie@...nel.org>
CC:     Vignesh Raghavendra <vigneshr@...com>,
        Boris Brezillon <bbrezillon@...nel.org>,
        Ramuthevar Vadivel Murugan 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <linux-spi@...r.kernel.org>, <simon.k.r.goldschmidt@...il.com>,
        <dinguyen@...nel.org>, <marex@...x.de>
Subject: [PATCH v3 3/8] mtd: spi-nor: cadence-quadspi: Don't initialize rx_dma_complete on failure

If driver fails to acquire DMA channel then don't initialize
rx_dma_complete struct as it won't be used.

Signed-off-by: Vignesh Raghavendra <vigneshr@...com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@...rochip.com>
---
 drivers/mtd/spi-nor/controllers/cadence-quadspi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/spi-nor/controllers/cadence-quadspi.c b/drivers/mtd/spi-nor/controllers/cadence-quadspi.c
index 8a9e17f79d8d..379e22c11c87 100644
--- a/drivers/mtd/spi-nor/controllers/cadence-quadspi.c
+++ b/drivers/mtd/spi-nor/controllers/cadence-quadspi.c
@@ -1180,6 +1180,7 @@ static void cqspi_request_mmap_dma(struct cqspi_st *cqspi)
 	if (IS_ERR(cqspi->rx_chan)) {
 		dev_err(&cqspi->pdev->dev, "No Rx DMA available\n");
 		cqspi->rx_chan = NULL;
+		return;
 	}
 	init_completion(&cqspi->rx_dma_complete);
 }
-- 
2.26.2