linux-kernel - [PATCH] soc: aspeed: uart-routing: Use __sysfs_match

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Date:   Wed, 28 Jun 2023 01:37:36 -0700
From:   Zev Weiss <zev@...ilderbeest.net>
To:     Andrew Jeffery <andrew@...id.au>, Joel Stanley <joel@....id.au>,
        linux-aspeed@...ts.ozlabs.org
Cc:     Zev Weiss <zev@...ilderbeest.net>,
        Chia-Wei Wang <chiawei_wang@...eedtech.com>,
        Oskar Senft <osk@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        openbmc@...ts.ozlabs.org
Subject: [PATCH] soc: aspeed: uart-routing: Use __sysfs_match_string

The existing use of match_string() caused it to reject 'echo foo' due
to the implicitly appended newline, which was somewhat ergonomically
awkward and inconsistent with typical sysfs behavior.  Using the
__sysfs_* variant instead provides more convenient and consistent
linefeed-agnostic behavior.

Signed-off-by: Zev Weiss <zev@...ilderbeest.net>
---
 drivers/soc/aspeed/aspeed-uart-routing.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/aspeed/aspeed-uart-routing.c b/drivers/soc/aspeed/aspeed-uart-routing.c
index ef8b24fd1851..59123e1f27ac 100644
--- a/drivers/soc/aspeed/aspeed-uart-routing.c
+++ b/drivers/soc/aspeed/aspeed-uart-routing.c
@@ -524,7 +524,7 @@ static ssize_t aspeed_uart_routing_store(struct device *dev,
 	struct aspeed_uart_routing_selector *sel = to_routing_selector(attr);
 	int val;
 
-	val = match_string(sel->options, -1, buf);
+	val = __sysfs_match_string(sel->options, -1, buf);
 	if (val < 0) {
 		dev_err(dev, "invalid value \"%s\"\n", buf);
 		return -EINVAL;
-- 
2.40.0.5.gf6e3b97ba6d2.dirty