From: Xu Wang <vulab@iscas.ac.cn>
Date: Wed, 10 Nov 2021 09:49:10 +0000 (+0000)
Subject: media: atomisp: Remove unneeded null check
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=352ff3f3d449554f5259f75d77f65e638ea9d4a1;p=linux.git

media: atomisp: Remove unneeded null check

In ia_css_frame_map, the check of 'err' is unneeded to be done twice.

Link: https://lore.kernel.org/linux-media/20211110094910.67951-1-vulab@iscas.ac.cn
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---

diff --git a/drivers/staging/media/atomisp/pci/runtime/frame/src/frame.c b/drivers/staging/media/atomisp/pci/runtime/frame/src/frame.c
index 3c9dd5c038505..e3242652f2962 100644
--- a/drivers/staging/media/atomisp/pci/runtime/frame/src/frame.c
+++ b/drivers/staging/media/atomisp/pci/runtime/frame/src/frame.c
@@ -168,25 +168,23 @@ int ia_css_frame_map(struct ia_css_frame **frame,
 	if (err)
 		return err;
 
-	if (!err) {
-		if (pgnr < ((PAGE_ALIGN(me->data_bytes)) >> PAGE_SHIFT)) {
-			dev_err(atomisp_dev,
-				"user space memory size is less than the expected size..\n");
-			err = -ENOMEM;
-			goto error;
-		} else if (pgnr > ((PAGE_ALIGN(me->data_bytes)) >> PAGE_SHIFT)) {
-			dev_err(atomisp_dev,
-				"user space memory size is large than the expected size..\n");
-			err = -ENOMEM;
-			goto error;
-		}
+	if (pgnr < ((PAGE_ALIGN(me->data_bytes)) >> PAGE_SHIFT)) {
+		dev_err(atomisp_dev,
+			"user space memory size is less than the expected size..\n");
+		err = -ENOMEM;
+		goto error;
+	} else if (pgnr > ((PAGE_ALIGN(me->data_bytes)) >> PAGE_SHIFT)) {
+		dev_err(atomisp_dev,
+			"user space memory size is large than the expected size..\n");
+		err = -ENOMEM;
+		goto error;
+	}
 
-		me->data = hmm_alloc(me->data_bytes, HMM_BO_USER, 0, data,
-				     attribute & ATOMISP_MAP_FLAG_CACHED);
+	me->data = hmm_alloc(me->data_bytes, HMM_BO_USER, 0, data,
+			     attribute & ATOMISP_MAP_FLAG_CACHED);
 
-		if (me->data == mmgr_NULL)
-			err = -EINVAL;
-	}
+	if (me->data == mmgr_NULL)
+		err = -EINVAL;
 
 error:
 	if (err) {