linux-kernel - [PATCH v3] Revert "tty: serial: pl011: add ttyAMA for matching pl011 console"

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Date:   Wed,  1 Mar 2017 18:23:02 +0300
From:   Aleksey Makarov <aleksey.makarov@...aro.org>
To:     linux-serial@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Aleksey Makarov <aleksey.makarov@...aro.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Peter Hurley <peter@...leysoftware.com>,
        Russell King <linux@...linux.org.uk>,
        Jiri Slaby <jslaby@...e.com>,
        Robin Murphy <robin.murphy@....com>
Subject: [PATCH v3] Revert "tty: serial: pl011: add ttyAMA for matching pl011 console"

The original patch makes the condition always true, so it is wrong.

It masks (but not fixes) the bug described in the commit message
but introduces a regression (no console is selected by SPCR)
in regular (no 'console=ttyAMA') case.

s/||/&&/ would not fix the problem as the root cause was identified
incorrectly.

This reverts commit aea9a80ba98a0c9b4de88850260e9fbdcc98360b.

Signed-off-by: Aleksey Makarov <aleksey.makarov@...aro.org>
---

v3: fix commit message (Robin Murphy)
v2: add Signed-off-by:

 drivers/tty/serial/amba-pl011.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 8789ea423ccf..56f92d7348bf 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -2373,7 +2373,7 @@ static int __init pl011_console_match(struct console *co, char *name, int idx,
 	if (strcmp(name, "qdf2400_e44") == 0) {
 		pr_info_once("UART: Working around QDF2400 SoC erratum 44");
 		qdf2400_e44_present = true;
-	} else if (strcmp(name, "pl011") != 0 || strcmp(name, "ttyAMA") != 0) {
+	} else if (strcmp(name, "pl011") != 0) {
 		return -ENODEV;
 	}
 
-- 
2.11.1