From: Amol Lad <amol@verismonetworks.com>
Date: Fri, 8 Dec 2006 10:40:12 +0000 (-0800)
Subject: [PATCH] ioremap balanced with iounmap for drivers/video/ffb
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8d4c767ef56473b68a601274612d604c8c334dc9;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] ioremap balanced with iounmap for drivers/video/ffb

ioremap must be balanced by an iounmap and failing to do so can result in a
memory leak.

Signed-off-by: Amol Lad <amol@verismonetworks.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/video/ffb.c b/drivers/video/ffb.c
index 2a0e8210d398..949141bd44d4 100644
--- a/drivers/video/ffb.c
+++ b/drivers/video/ffb.c
@@ -968,6 +968,8 @@ static int ffb_init_one(struct of_device *op)
 
 	if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
 		printk(KERN_ERR "ffb: Could not allocate color map.\n");
+		of_iounmap(all->par.fbc, sizeof(struct ffb_fbc));
+		of_iounmap(all->par.dac, sizeof(struct ffb_dac));
 		kfree(all);
 		return -ENOMEM;
 	}
@@ -978,6 +980,8 @@ static int ffb_init_one(struct of_device *op)
 	if (err < 0) {
 		printk(KERN_ERR "ffb: Could not register framebuffer.\n");
 		fb_dealloc_cmap(&all->info.cmap);
+		of_iounmap(all->par.fbc, sizeof(struct ffb_fbc));
+		of_iounmap(all->par.dac, sizeof(struct ffb_dac));
 		kfree(all);
 		return err;
 	}