linux-kernel - [PATCH 5.4 119/203] pinctl: ti: iodelay: fix error checking on pinctrl_count_index_with

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Date:   Fri, 17 Jan 2020 00:17:16 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Colin Ian King <colin.king@...onical.com>,
        Tony Lindgren <tony@...mide.com>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 5.4 119/203] pinctl: ti: iodelay: fix error checking on pinctrl_count_index_with_args call

From: Colin Ian King <colin.king@...onical.com>

commit 5ff8aca906f3a7a7db79fad92f2a4401107ef50d upstream.

The call to pinctrl_count_index_with_args checks for a -EINVAL return
however this function calls pinctrl_get_list_and_count and this can
return -ENOENT. Rather than check for a specific error, fix this by
checking for any error return to catch the -ENOENT case.

Addresses-Coverity: ("Improper use of negative")
Fixes: 003910ebc83b ("pinctrl: Introduce TI IOdelay configuration driver")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
Link: https://lore.kernel.org/r/20190920122030.14340-1-colin.king@canonical.com
Acked-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/pinctrl/ti/pinctrl-ti-iodelay.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/pinctrl/ti/pinctrl-ti-iodelay.c
+++ b/drivers/pinctrl/ti/pinctrl-ti-iodelay.c
@@ -496,7 +496,7 @@ static int ti_iodelay_dt_node_to_map(str
 		return -EINVAL;
 
 	rows = pinctrl_count_index_with_args(np, name);
-	if (rows == -EINVAL)
+	if (rows < 0)
 		return rows;
 
 	*map = devm_kzalloc(iod->dev, sizeof(**map), GFP_KERNEL);