staging: most: hdm-dim2: Replace request_irq with devm_request_irq

Devm_ functions allocate memory that is released when a driver
detaches. Replace request_irq with devm_request_irq to get the
interrupt for device which is automatically freed on exit. Remove
corresponding free_irq from probe and remove functions of a platform
device.

Also, remove an unnecessary label.

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/most/hdm-dim2/dim2_hdm.c b/drivers/staging/most/hdm-dim2/dim2_hdm.c
index 708b998b953f853aa956761e0488430d7e78a03b..c9cc9c1d267ab77dfc53bf80a690a8edcf274676 100644 (file)
--- a/drivers/staging/most/hdm-dim2/dim2_hdm.c
+++ b/drivers/staging/most/hdm-dim2/dim2_hdm.c
@@ -758,7 +758,8 @@ static int dim2_probe(struct platform_device *pdev)
        }
        dev->irq_ahb0 = ret;
 
-       ret = request_irq(dev->irq_ahb0, dim2_ahb_isr, 0, "mlb_ahb0", dev);
+       ret = devm_request_irq(&pdev->dev, dev->irq_ahb0, dim2_ahb_isr, 0,
+                              "mlb_ahb0", dev);
        if (ret) {
                pr_err("failed to request IRQ: %d, err: %d\n",
                       dev->irq_ahb0, ret);
@@ -769,10 +770,8 @@ static int dim2_probe(struct platform_device *pdev)
        dev->deliver_netinfo = 0;
        dev->netinfo_task = kthread_run(&deliver_netinfo_thread, (void *)dev,
                                        "dim2_netinfo");
-       if (IS_ERR(dev->netinfo_task)) {
+       if (IS_ERR(dev->netinfo_task))
                ret = PTR_ERR(dev->netinfo_task);
-               goto err_free_irq;
-       }
 
        for (i = 0; i < DMA_CHANNELS; i++) {
                struct most_channel_capability *cap = dev->capabilities + i;
@@ -840,10 +839,6 @@ err_unreg_iface:
        most_deregister_interface(&dev->most_iface);
 err_stop_thread:
        kthread_stop(dev->netinfo_task);
-err_free_irq:
-#if !defined(ENABLE_HDM_TEST)
-       free_irq(dev->irq_ahb0, dev);
-#endif
 
        return ret;
 }
@@ -870,9 +865,6 @@ static int dim2_remove(struct platform_device *pdev)
        dim2_sysfs_destroy(&dev->bus);
        most_deregister_interface(&dev->most_iface);
        kthread_stop(dev->netinfo_task);
-#if !defined(ENABLE_HDM_TEST)
-       free_irq(dev->irq_ahb0, dev);
-#endif
 
        /*
         * break link to local platform_device_id struct