From: Lad, Prabhakar <prabhakar.csengg@xxxxxxxxx>
use devm_request_irq() instead of request_irq().
This ensures more consistent error values and simplifies error paths.
use module_platform_driver to simplify the code.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@xxxxxxxxx>
---
drivers/media/platform/davinci/vpif_display.c | 62 +++++--------------------
1 files changed, 12 insertions(+), 50 deletions(-)
diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c
index d833056..87e9381 100644
--- a/drivers/media/platform/davinci/vpif_display.c
+++ b/drivers/media/platform/davinci/vpif_display.c
@@ -1718,14 +1718,13 @@ static __init int vpif_probe(struct platform_device *pdev)
while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
for (i = res->start; i <= res->end; i++) {
- if (request_irq(i, vpif_channel_isr, IRQF_SHARED,
- "VPIF_Display", (void *)
- (&vpif_obj.dev[res_idx]->channel_id))) {
- err = -EBUSY;
- for (j = 0; j < i; j++)
- free_irq(j, (void *)
- (&vpif_obj.dev[res_idx]->channel_id));
- goto vpif_int_err;
+ err = devm_request_irq(&pdev->dev, i, vpif_channel_isr,
+ IRQF_SHARED, "VPIF_Display",
+ (void *)(&vpif_obj.dev[res_idx]->
+ channel_id));
+ if (err) {
+ err = -EINVAL;
+ goto vpif_unregister;
}
}
res_idx++;
@@ -1743,7 +1742,7 @@ static __init int vpif_probe(struct platform_device *pdev)
video_device_release(ch->video_dev);
}
err = -ENOMEM;
- goto vpif_int_err;
+ goto vpif_unregister;
}
/* Initialize field of video device */
@@ -1876,14 +1875,8 @@ vpif_sd_error:
/* Note: does nothing if ch->video_dev == NULL */
video_device_release(ch->video_dev);
}
-vpif_int_err:
+vpif_unregister:
v4l2_device_unregister(&vpif_obj.v4l2_dev);
- vpif_err("VPIF IRQ request failed\n");
- for (i = 0; i < res_idx; i++) {
- res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
- for (j = res->start; j <= res->end; j++)
- free_irq(j, (void *)(&vpif_obj.dev[i]->channel_id));
- }
return err;
}
@@ -1898,6 +1891,7 @@ static int vpif_remove(struct platform_device *device)
v4l2_device_unregister(&vpif_obj.v4l2_dev);
+ kfree(vpif_obj.sd);
/* un-register device */
for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
/* Get the pointer to the channel object */
@@ -1906,6 +1900,7 @@ static int vpif_remove(struct platform_device *device)
video_unregister_device(ch->video_dev);
ch->video_dev = NULL;
+ kfree(vpif_obj.dev[i]);
}
return 0;
@@ -1991,37 +1986,4 @@ static __refdata struct platform_driver vpif_driver = {
.remove = vpif_remove,
};
-static __init int vpif_init(void)
-{
- return platform_driver_register(&vpif_driver);
-}
-
-/*
- * vpif_cleanup: This function un-registers device and driver to the kernel,
- * frees requested irq handler and de-allocates memory allocated for channel
- * objects.
- */
-static void vpif_cleanup(void)
-{
- struct platform_device *pdev;
- struct resource *res;
- int irq_num;
- int i = 0;
-
- pdev = container_of(vpif_dev, struct platform_device, dev);
-
- while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) {
- for (irq_num = res->start; irq_num <= res->end; irq_num++)
- free_irq(irq_num,
- (void *)(&vpif_obj.dev[i]->channel_id));
- i++;
- }
-
- platform_driver_unregister(&vpif_driver);
- kfree(vpif_obj.sd);
- for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++)
- kfree(vpif_obj.dev[i]);
-}
-
-module_init(vpif_init);
-module_exit(vpif_cleanup);
+module_platform_driver(vpif_driver);
--
1.7.4.1
--
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