linux-kernel - [PATCH v2 2/2] dma: imx-sdma: Adding tasklet_kill() in sdma

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Message-ID: <1407244182-27302-3-git-send-email-Vignesh_Raman@mentor.com>
Date:	Tue, 5 Aug 2014 18:39:42 +0530
From:	Vignesh Raman <Vignesh_Raman@...tor.com>
To:	<vinod.koul@...el.com>, <dan.j.williams@...el.com>,
	<dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:	<Jiada_Wang@...tor.com>
Subject: [PATCH v2 2/2] dma: imx-sdma: Adding tasklet_kill() in sdma_remove function.

Several dma drivers calls tasklet_kill() in remove function. This is done
because all running tasklets should be killed on remove. This is missing
in imx sdma driver, so adding tasklet_kill() in sdma_remove function.

Signed-off-by: Vignesh Raman <Vignesh_Raman@...tor.com>
---
 drivers/dma/imx-sdma.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 5cefc7d..3961c72 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1638,12 +1638,19 @@ static int sdma_remove(struct platform_device *pdev)
 	struct sdma_engine *sdma = platform_get_drvdata(pdev);
 	struct resource *iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	int irq = platform_get_irq(pdev, 0);
+	int i;
 
 	dma_async_device_unregister(&sdma->dma_device);
 	kfree(sdma->script_addrs);
 	free_irq(irq, sdma);
 	iounmap(sdma->regs);
 	release_mem_region(iores->start, resource_size(iores));
+	/* Kill the tasklet */
+	for (i = 0; i < MAX_DMA_CHANNELS; i++) {
+		struct sdma_channel *sdmac = &sdma->channel[i];
+
+		tasklet_kill(&sdmac->tasklet);
+	}
 	kfree(sdma);
 
 	platform_set_drvdata(pdev, NULL);
-- 
1.7.9.5

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