linux-kernel - [PATCH 4.18 178/235] serial: 8250: of: Correct of_platform_serial

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Message-Id: <20180924113122.519851028@linuxfoundation.org>
Date:   Mon, 24 Sep 2018 13:52:44 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Alexander Sverdlin <alexander.sverdlin@...ia.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.18 178/235] serial: 8250: of: Correct of_platform_serial_setup() error handling

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alexander Sverdlin <alexander.sverdlin@...ia.com>

[ Upstream commit b29330d829042512fabb2bfa3bbfa32df1115594 ]

Don't dispose IRQ mapping before it has been created.

Fixes: aa9594740 ("serial: 8250_of: Add IO space support")
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@...ia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/tty/serial/8250/8250_of.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -124,7 +124,7 @@ static int of_platform_serial_setup(stru
 				dev_warn(&ofdev->dev, "unsupported reg-io-width (%d)\n",
 					 prop);
 				ret = -EINVAL;
-				goto err_dispose;
+				goto err_unprepare;
 			}
 		}
 		port->flags |= UPF_IOREMAP;