# \[PATCH v8 04/16\] usb: hub: Use assign\_bit() in usb\_hub\_set\_port\_power()

- From: Chen-Yu Tsai \<wenst@chromium.org\>
- Date: 2026-09-04 08:42:32 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2026/09/17512172
- Thread: https://ratatoskr.run/linux-acpi/2026/09/17512168/t.md

```text
usb_hub_set_port_power() open-codes assign_bit(). Just use the
assign_bit() macro instead. This makes subsequent additions to
usb_hub_set_port_power() easier to read.

This change does not introduce any functional changes.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bartosz Golaszewski <redacted>
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
---
Attributing suggestion to Andy, since the change was originally
requested as part of a review.

Changes since v4:
- New patch (split out from "usb: hub: Power on connected M.2 E-key
  connectors with power sequencing API") (Andy)
---
 drivers/usb/core/hub.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 3345b3298daf..16e03ec8d1ab 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -10,6 +10,7 @@
  * Released under the GPLv2 only.
  */
 
+#include <linux/bitops.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/module.h>
@@ -899,10 +900,7 @@ int usb_hub_set_port_power(struct usb_device *hdev, struct usb_hub *hub,
 	if (ret)
 		return ret;
 
-	if (set)
-		set_bit(port1, hub->power_bits);
-	else
-		clear_bit(port1, hub->power_bits);
+	assign_bit(port1, hub->power_bits, set);
 	return 0;
 }
 
-- 
2.55.0.979.g7e5102b832-goog


```