[PATCH 28/33] dmaengine: at_hdmac: Use devm_request_irq()

Tudor Ambarus
2022-08-20T13:00:47Z

IRQs requested with this function will be automatically freed on driver
detach. Use devm_request_irq() and make the code cleaner.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
drivers/dma/at_hdmac.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 9c414f167b62..96b885f83374 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -2241,6 +2241,10 @@ static int __init at_dma_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
+ err = devm_request_irq(&pdev->dev, irq, at_dma_interrupt, 0,
+ dev_name(&pdev->dev), atdma);
+ if (err)
+ return err;

/* discover transaction capabilities */
atdma->dma_device.cap_mask = plat_dat->cap_mask;
@@ -2257,10 +2261,6 @@ static int __init at_dma_probe(struct platform_device *pdev)
/* force dma off, just in case */
at_dma_off(atdma);

- err = request_irq(irq, at_dma_interrupt, 0, "at_hdmac", atdma);
- if (err)
- goto err_irq;
-
platform_set_drvdata(pdev, atdma);

/* create a pool of consistent memory blocks for hardware descriptors */
@@ -2377,8 +2377,6 @@ static int __init at_dma_probe(struct platform_device *pdev)
err_memset_pool_create:
dma_pool_destroy(atdma->dma_desc_pool);
err_desc_pool_create:
- free_irq(platform_get_irq(pdev, 0), atdma);
-err_irq:
clk_disable_unprepare(atdma->clk);
err_clk_prepare:
clk_put(atdma->clk);
@@ -2397,7 +2395,6 @@ static int at_dma_remove(struct platform_device *pdev)

dma_pool_destroy(atdma->memset_pool);
dma_pool_destroy(atdma->dma_desc_pool);
- free_irq(platform_get_irq(pdev, 0), atdma);

list_for_each_entry_safe(chan, _chan, &atdma->dma_device.channels,
device_node) {
--
2.25.1