[PATCH v2] usb: move assignment out of if condition

[PATCH v2] usb: move assignment out of if condition

[Kris Borer]

Fix four occurrences of checkpatch.pl error:

ERROR: do not use assignment in if condition

Signed-off-by: Kris Borer <kborer@gmail.com>
---
 drivers/usb/core/hcd.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index be5b207..3204a4d 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2683,12 +2683,14 @@ int usb_add_hcd(struct usb_hcd *hcd,
 	 * bottom up so that hcds can customize the root hubs before hub_wq
 	 * starts talking to them.  (Note, bus id is assigned early too.)
 	 */
-	if ((retval = hcd_buffer_create(hcd)) != 0) {
+	retval = hcd_buffer_create(hcd);
+	if (retval != 0) {
 		dev_dbg(hcd->self.controller, "pool alloc failed\n");
 		goto err_create_buf;
 	}
 
-	if ((retval = usb_register_bus(&hcd->self)) < 0)
+	retval = usb_register_bus(&hcd->self);
+	if (retval < 0)
 		goto err_register_bus;
 
 	rhdev = usb_alloc_dev(NULL, &hcd->self, 0);
@@ -2734,9 +2736,13 @@ int usb_add_hcd(struct usb_hcd *hcd,
 	/* "reset" is misnamed; its role is now one-time init. the controller
 	 * should already have been reset (and boot firmware kicked off etc).
 	 */
-	if (hcd->driver->reset && (retval = hcd->driver->reset(hcd)) < 0) {
-		dev_err(hcd->self.controller, "can't setup: %d\n", retval);
-		goto err_hcd_driver_setup;
+	if (hcd->driver->reset) {
+		retval = hcd->driver->reset(hcd);
+		if (retval < 0) {
+			dev_err(hcd->self.controller, "can't setup: %d\n",
+					retval);
+			goto err_hcd_driver_setup;
+		}
 	}
 	hcd->rh_pollable = 1;
 
@@ -2766,7 +2772,8 @@ int usb_add_hcd(struct usb_hcd *hcd,
 	}
 
 	/* starting here, usbcore will pay attention to this root hub */
-	if ((retval = register_root_hub(hcd)) != 0)
+	retval = register_root_hub(hcd);
+	if (retval != 0)
 		goto err_register_root_hub;
 
 	retval = sysfs_create_group(&rhdev->dev.kobj, &usb_bus_attr_group);
-- 
1.9.1

Re: [PATCH v2] usb: move assignment out of if condition

[Greg KH]

On Thu, Jul 02, 2015 at 06:23:59PM -0400, Kris Borer wrote:
> Fix four occurrences of checkpatch.pl error:
> 
> ERROR: do not use assignment in if condition
> 
> Signed-off-by: Kris Borer <kborer@gmail.com>
> ---
>  drivers/usb/core/hcd.c | 19 +++++++++++++------
>  1 file changed, 13 insertions(+), 6 deletions(-)

Again, please use Coccinelle for something like this, otherwise I'm not
going to trust that it is correct :)

thanks,

greg k-h