soc: aspeed: uart-routing: Use __sysfs_match_string

BugLink: https://bugs.launchpad.net/bugs/2039110
[ Upstream commit e4ad279ae345413d900d791f2f618d0a1cd0d791 ]

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@bewilderbeest.net>
Fixes: c6807970c3bc ("soc: aspeed: Add UART routing support")
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20230628083735.19946-2-zev@bewilderbeest.net
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20230810122941.231085-1-joel@jms.id.au
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/drivers/soc/aspeed/aspeed-uart-routing.c b/drivers/soc/aspeed/aspeed-uart-routing.c
index ef8b24fd18518a4db9df7013f43312adf269b060..59123e1f27acb89cbc3ca0fbee81760cb791fb9b 100644 (file)
--- 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;