linux-kernel - [PATCH v2 3/7] net: caif: Fix debugfs on 64-bit platforms

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Date:   Fri, 25 Oct 2019 11:41:26 +0200
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Jonathan Corbet <corbet@....net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        "David S . Miller" <davem@...emloft.net>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Johannes Berg <johannes@...solutions.net>
Cc:     linux-doc@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v2 3/7] net: caif: Fix debugfs on 64-bit platforms

"ser_device.state" is "unsigned long", i.e. 32-bit or 64-bit, depending
on the platform.  Hence casting its address to "u32 *", and calling
debugfs_create_x32() breaks operation on 64-bit platforms.

Fix this by using the new debugfs_create_xul() helper instead.

Fixes: 9b27105b4a44c54b ("net-caif-driver: add CAIF serial driver (ldisc)")
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
v2:
  - No changes.
---
 drivers/net/caif/caif_serial.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
index 40b079162804fb0c..bd40b114d6cd7214 100644
--- a/drivers/net/caif/caif_serial.c
+++ b/drivers/net/caif/caif_serial.c
@@ -102,8 +102,8 @@ static inline void debugfs_init(struct ser_device *ser, struct tty_struct *tty)
 	debugfs_create_blob("last_rx_msg", 0400, ser->debugfs_tty_dir,
 			    &ser->rx_blob);
 
-	debugfs_create_x32("ser_state", 0400, ser->debugfs_tty_dir,
-			   (u32 *)&ser->state);
+	debugfs_create_xul("ser_state", 0400, ser->debugfs_tty_dir,
+			   &ser->state);
 
 	debugfs_create_x8("tty_status", 0400, ser->debugfs_tty_dir,
 			  &ser->tty_status);
-- 
2.17.1