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Subject[PATCH 1/2] dmaengine: xilinx_dma: Fix probe error cleanup
Date
When probe fails remove dma channel resources and disable clocks in
accordance with the order of resources allocated .

Add missing cleanup in devm_platform_ioremap_resource(), xlnx,num-fstores
property.

Signed-off-by: Swati Agarwal <swati.agarwal@xilinx.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
---
drivers/dma/xilinx/xilinx_dma.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index cd62bbb50e8b..fbf341e8c36f 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -3160,8 +3160,10 @@ static int xilinx_dma_probe(struct platform_device *pdev)

/* Request and map I/O memory */
xdev->regs = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(xdev->regs))
- return PTR_ERR(xdev->regs);
+ if (IS_ERR(xdev->regs)) {
+ err = PTR_ERR(xdev->regs);
+ goto disable_clks;
+ }

/* Retrieve the DMA engine properties from the device tree */
xdev->max_buffer_len = GENMASK(XILINX_DMA_MAX_TRANS_LEN_MAX - 1, 0);
@@ -3190,7 +3192,7 @@ static int xilinx_dma_probe(struct platform_device *pdev)
if (err < 0) {
dev_err(xdev->dev,
"missing xlnx,num-fstores property\n");
- return err;
+ goto disable_clks;
}

err = of_property_read_u32(node, "xlnx,flush-fsync",
@@ -3259,7 +3261,7 @@ static int xilinx_dma_probe(struct platform_device *pdev)
for_each_child_of_node(node, child) {
err = xilinx_dma_child_probe(xdev, child);
if (err < 0)
- goto disable_clks;
+ goto error;
}

if (xdev->dma_config->dmatype == XDMA_TYPE_VDMA) {
@@ -3294,12 +3296,12 @@ static int xilinx_dma_probe(struct platform_device *pdev)

return 0;

-disable_clks:
- xdma_disable_allclks(xdev);
error:
for (i = 0; i < xdev->dma_config->max_channels; i++)
if (xdev->chan[i])
xilinx_dma_chan_remove(xdev->chan[i]);
+disable_clks:
+ xdma_disable_allclks(xdev);

return err;
}
--
2.17.1
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