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Subject[PATCH 2/2] dmaengine: fsldma: Fix a resource leak in an error handling path of the probe function
Date
In case of error, the previous 'fsl_dma_chan_probe()' calls must be undone
by some 'fsl_dma_chan_remove()', as already done in the remove function.

It was added in the remove function in commit 77cd62e8082b ("fsldma: allow
Freescale Elo DMA driver to be compiled as a module")

Fixes: d3f620b2c4fe ("fsldma: simplify IRQ probing and handling")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
Patch provided as-is.
I don't have the configuration to compile test this patch
---
drivers/dma/fsldma.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 554f70a0c18c..f8459cc5315d 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -1214,6 +1214,7 @@ static int fsldma_of_probe(struct platform_device *op)
{
struct fsldma_device *fdev;
struct device_node *child;
+ unsigned int i;
int err;

fdev = kzalloc(sizeof(*fdev), GFP_KERNEL);
@@ -1292,6 +1293,10 @@ static int fsldma_of_probe(struct platform_device *op)
return 0;

out_free_fdev:
+ for (i = 0; i < FSL_DMA_MAX_CHANS_PER_DEVICE; i++) {
+ if (fdev->chan[i])
+ fsl_dma_chan_remove(fdev->chan[i]);
+ }
irq_dispose_mapping(fdev->irq);
iounmap(fdev->regs);
out_free:
--
2.27.0
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