linux-kernel - [PATCH v3 14/23] drivers/base: Make device_find_child_by

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Date:   Fri, 31 Jul 2020 20:26:18 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     akpm@...ux-foundation.org
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        peterz@...radead.org, vishal.l.verma@...el.com,
        dave.hansen@...ux.intel.com, ard.biesheuvel@...aro.org,
        vishal.l.verma@...el.com, linux-mm@...ck.org,
        linux-nvdimm@...ts.01.org, joao.m.martins@...cle.com,
        linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH v3 14/23] drivers/base: Make device_find_child_by_name()
 compatible with sysfs inputs

Use sysfs_streq() in device_find_child_by_name() to allow it to use a
sysfs input string that might contain a trailing newline.

The other "device by name" interfaces,
{bus,driver,class}_find_device_by_name(), already account for sysfs
strings.

Cc: "Rafael J. Wysocki" <rafael@...nel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/base/core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 2169c5132558..231189dd6599 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -3328,7 +3328,7 @@ struct device *device_find_child_by_name(struct device *parent,
 
 	klist_iter_init(&parent->p->klist_children, &i);
 	while ((child = next_device(&i)))
-		if (!strcmp(dev_name(child), name) && get_device(child))
+		if (sysfs_streq(dev_name(child), name) && get_device(child))
 			break;
 	klist_iter_exit(&i);
 	return child;