[ 09/61] xen/hvc: Collapse error logic.

[Greg KH]

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

commit 2e5ad6b9c45d43cc4e7b8ac5ded1c55a7c4a3893 upstream.

All of the error paths are doing the same logic. In which
case we might as well collapse them in one path.

Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/tty/hvc/hvc_xen.c |   21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -216,22 +216,16 @@ static int xen_hvm_console_init(void)
 		return 0;
 
 	r = hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN, &v);
-	if (r < 0) {
-		kfree(info);
-		return -ENODEV;
-	}
+	if (r < 0)
+		goto err;
 	info->evtchn = v;
 	hvm_get_parameter(HVM_PARAM_CONSOLE_PFN, &v);
-	if (r < 0) {
-		kfree(info);
-		return -ENODEV;
-	}
+	if (r < 0)
+		goto err;
 	mfn = v;
 	info->intf = ioremap(mfn << PAGE_SHIFT, PAGE_SIZE);
-	if (info->intf == NULL) {
-		kfree(info);
-		return -ENODEV;
-	}
+	if (info->intf == NULL)
+		goto err;
 	info->vtermno = HVC_COOKIE;
 
 	spin_lock(&xencons_lock);
@@ -239,6 +233,9 @@ static int xen_hvm_console_init(void)
 	spin_unlock(&xencons_lock);
 
 	return 0;
+err:
+	kfree(info);
+	return -ENODEV;
 }
 
 static int xen_pv_console_init(void)


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