[PATCH 1/2] dmaengine: fsldma: Fix a resource leak in the remove function

Subsystems: dma generic offload engine subsystem, freescale dma driver, the rest

STALE2065d LANDED

Landed in mainline as cbc0ad004c03 on 2021-01-12.

2 messages, 2 authors, 2021-01-12 · open the first message on its own page

[PATCH 1/2] dmaengine: fsldma: Fix a resource leak in the remove function

From: Christophe JAILLET <hidden>
Date: 2020-12-12 16:07:23

A 'irq_dispose_mapping()' call is missing in the remove function.
Add it.

This is needed to undo the 'irq_of_parse_and_map() call from the probe
function and already part of the error handling path of the probe function.

It was added in the probe function only in commit d3f620b2c4fe ("fsldma:
simplify IRQ probing and handling")

Fixes: 77cd62e8082b ("fsldma: allow Freescale Elo DMA driver to be compiled as a module")
Signed-off-by: Christophe JAILLET <redacted>
---
Patch provided as-is.
I don't have the configuration to compile test this patch
---
 drivers/dma/fsldma.c | 1 +
 1 file changed, 1 insertion(+)
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 0feb323bae1e..554f70a0c18c 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -1314,6 +1314,7 @@ static int fsldma_of_remove(struct platform_device *op)
 		if (fdev->chan[i])
 			fsl_dma_chan_remove(fdev->chan[i]);
 	}
+	irq_dispose_mapping(fdev->irq);
 
 	iounmap(fdev->regs);
 	kfree(fdev);
-- 
2.27.0

Re: [PATCH 1/2] dmaengine: fsldma: Fix a resource leak in the remove function

From: Vinod Koul <vkoul@kernel.org>
Date: 2021-01-12 12:31:53

On 12-12-20, 17:05, Christophe JAILLET wrote:
A 'irq_dispose_mapping()' call is missing in the remove function.
Add it.

This is needed to undo the 'irq_of_parse_and_map() call from the probe
function and already part of the error handling path of the probe function.

It was added in the probe function only in commit d3f620b2c4fe ("fsldma:
simplify IRQ probing and handling")
Applied both, thanks

-- 
~Vinod
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