i2c: imx: call ioremap only after request_mem_region

accordingly adapt order of release_mem_region and release_mem_region on
remove.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: Richard Zhao <linuxzsc@gmail.com>
Cc: Darius Augulis <augulis.darius@gmail.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: linux-i2c@vger.kernel.org
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 11 insertions, 10 deletions

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 602b30e32cf3..75bf820e7ccb 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -497,22 +497,23 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
         }
 
         res_size = resource_size(res);
+
+        if (!request_mem_region(res->start, res_size, DRIVER_NAME)) {
+                ret = -EBUSY;
+                goto fail0;
+        }
+
         base = ioremap(res->start, res_size);
         if (!base) {
                 dev_err(&pdev->dev, "ioremap failed\n");
                 ret = -EIO;
-                goto fail0;
+                goto fail1;
         }
 
         i2c_imx = kzalloc(sizeof(struct imx_i2c_struct), GFP_KERNEL);
         if (!i2c_imx) {
                 dev_err(&pdev->dev, "can't allocate interface\n");
                 ret = -ENOMEM;
-                goto fail1;
-        }
-
-        if (!request_mem_region(res->start, res_size, DRIVER_NAME)) {
-                ret = -EBUSY;
                 goto fail2;
         }
 
@@ -583,11 +584,11 @@ fail5:
 fail4:
         clk_put(i2c_imx->clk);
 fail3:
-        release_mem_region(i2c_imx->res->start, resource_size(res));
-fail2:
         kfree(i2c_imx);
-fail1:
+fail2:
         iounmap(base);
+fail1:
+        release_mem_region(res->start, resource_size(res));
 fail0:
         if (pdata && pdata->exit)
                 pdata->exit(&pdev->dev);
@@ -619,8 +620,8 @@ static int __exit i2c_imx_remove(struct platform_device *pdev)
 
         clk_put(i2c_imx->clk);
 
-        release_mem_region(i2c_imx->res->start, resource_size(i2c_imx->res));
         iounmap(i2c_imx->base);
+        release_mem_region(i2c_imx->res->start, resource_size(i2c_imx->res));
         kfree(i2c_imx);
         return 0;
 }