linux-kernel - [PATCH v7 04/18] pstore/platform: Use backend name for console registration

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Message-Id: <20200510202436.63222-5-keescook@chromium.org>
Date:   Sun, 10 May 2020 13:24:22 -0700
From:   Kees Cook <keescook@...omium.org>
To:     WeiXiong Liao <liaoweixiong@...winnertech.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>,
        Jonathan Corbet <corbet@....net>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Rob Herring <robh@...nel.org>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mtd@...ts.infradead.org
Subject: [PATCH v7 04/18] pstore/platform: Use backend name for console registration

If the pstore backend changes, there's no indication in the logs what
the console is (it always says "pstore"). Instead, pass through the
active backend's name.

Signed-off-by: Kees Cook <keescook@...omium.org>
---
 fs/pstore/platform.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index bf7fa7b278bd..90d146fbc7d2 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -519,13 +519,15 @@ static void pstore_console_write(struct console *con, const char *s, unsigned c)
 }
 
 static struct console pstore_console = {
-	.name	= "pstore",
 	.write	= pstore_console_write,
 	.index	= -1,
 };
 
 static void pstore_register_console(void)
 {
+	/* Show which backend is going to get console writes. */
+	strscpy(pstore_console.name, psinfo->name,
+		sizeof(pstore_console.name));
 	/*
 	 * Always initialize flags here since prior unregister_console()
 	 * calls may have changed settings (specifically CON_ENABLED).
-- 
2.20.1