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[v4,08/11] media: davinci: vpif_display: move the freeing of irq and global variables to remove()

Message ID 1371482451-18314-9-git-send-email-prabhakar.csengg@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Lad, Prabhakar June 17, 2013, 3:20 p.m. UTC 
From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>

Ideally the freeing of irq's and the global variables needs to be
done in the remove() rather than module_exit(), this patch moves
the freeing up of irq's and freeing the memory allocated to channel
objects to remove() callback of struct platform_driver.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
---
 drivers/media/platform/davinci/vpif_display.c |   30 ++++++++++---------------
 1 file changed, 12 insertions(+), 18 deletions(-)
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Patch

diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c
index 6c521f2..371af34 100644
--- a/drivers/media/platform/davinci/vpif_display.c
+++ b/drivers/media/platform/davinci/vpif_display.c
@@ -1829,10 +1829,20 @@  vpif_int_err:
 static int vpif_remove(struct platform_device *device)
 {
 	struct channel_obj *ch;
-	int i;
+	struct resource *res;
+	int irq_num;
+	int i = 0;
+
+	while ((res = platform_get_resource(device, 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++;
+	}
 
 	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 */
@@ -1841,6 +1851,7 @@  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;
@@ -1938,24 +1949,7 @@  static __init int vpif_init(void)
  */
 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);