[PATCH] driver core: auxiliary bus: Optimize auxiliary_match_id()

[Zijun Hu]

From: Zijun Hu <zijun.hu@xxxxxxxxxxxxxxxx>

Variable @match_size is fixed in auxiliary_match_id().

Optimize the function by moving the logic calculating the variable
out of the for loop.

Signed-off-by: Zijun Hu <zijun.hu@xxxxxxxxxxxxxxxx>
---
 drivers/base/auxiliary.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/base/auxiliary.c b/drivers/base/auxiliary.c
index 12ffdd8437567f282374bbf3775d9de7ca0dc4c7..9a53ada043045031e565ade57fd7ba781e7d20ea 100644
--- a/drivers/base/auxiliary.c
+++ b/drivers/base/auxiliary.c
@@ -171,14 +171,14 @@
 static const struct auxiliary_device_id *auxiliary_match_id(const struct auxiliary_device_id *id,
 							    const struct auxiliary_device *auxdev)
 {
-	for (; id->name[0]; id++) {
-		const char *p = strrchr(dev_name(&auxdev->dev), '.');
-		int match_size;
+	const char *p = strrchr(dev_name(&auxdev->dev), '.');
+	int match_size;
 
-		if (!p)
-			continue;
-		match_size = p - dev_name(&auxdev->dev);
+	if (!p)
+		return NULL;
+	match_size = p - dev_name(&auxdev->dev);
 
+	for (; id->name[0]; id++) {
 		/* use dev_name(&auxdev->dev) prefix before last '.' char to match to */
 		if (strlen(id->name) == match_size &&
 		    !strncmp(dev_name(&auxdev->dev), id->name, match_size))

---
base-commit: 1b237f190eb3d36f52dffe07a40b5eb210280e00
change-id: 20250902-fix_auxbus-76bec91376db

Best regards,
-- 
Zijun Hu <zijun.hu@xxxxxxxxxxxxxxxx>