i2c: imx: Add missing request_mem_region in probe()

Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
[ben-linux@fluff.org: fix minor patch fault in remove]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 13 insertions, 5 deletions

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 22cf200ecb3..433d3486de0 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -479,6 +479,11 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
                 goto fail1;
         }
 
+        if (!request_mem_region(res->start, res_size, DRIVER_NAME)) {
+                ret = -EBUSY;
+                goto fail2;
+        }
+
         /* Setup i2c_imx driver structure */
         strcpy(i2c_imx->adapter.name, pdev->name);
         i2c_imx->adapter.owner          = THIS_MODULE;
@@ -494,7 +499,7 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
         if (IS_ERR(i2c_imx->clk)) {
                 ret = PTR_ERR(i2c_imx->clk);
                 dev_err(&pdev->dev, "can't get I2C clock\n");
-                goto fail2;
+                goto fail3;
         }
         clk_enable(i2c_imx->clk);
 
@@ -502,7 +507,7 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
         ret = request_irq(i2c_imx->irq, i2c_imx_isr, 0, pdev->name, i2c_imx);
         if (ret) {
                 dev_err(&pdev->dev, "can't claim irq %d\n", i2c_imx->irq);
-                goto fail3;
+                goto fail4;
         }
 
         /* Init queue */
@@ -525,7 +530,7 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
         ret = i2c_add_numbered_adapter(&i2c_imx->adapter);
         if (ret < 0) {
                 dev_err(&pdev->dev, "registration failed\n");
-                goto fail4;
+                goto fail5;
         }
 
         /* Set up platform driver data */
@@ -542,11 +547,13 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
 
         return 0;   /* Return OK */
 
-fail4:
+fail5:
         free_irq(i2c_imx->irq, i2c_imx);
-fail3:
+fail4:
         clk_disable(i2c_imx->clk);
         clk_put(i2c_imx->clk);
+fail3:
+        release_mem_region(i2c_imx->res->start, resource_size(res));
 fail2:
         kfree(i2c_imx);
 fail1:
@@ -584,6 +591,7 @@ static int __exit i2c_imx_remove(struct platform_device *pdev)
         clk_disable(i2c_imx->clk);
         clk_put(i2c_imx->clk);
 
+        release_mem_region(i2c_imx->res->start, resource_size(i2c_imx->res));
         iounmap(i2c_imx->base);
         kfree(i2c_imx);
         return 0;