linux-kernel - [PATCH v2 6/7] mmc: dw_mmc: Fix debugfs on 64-bit platforms

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Message-Id: <20191025094130.26033-7-geert+renesas@glider.be>
Date:   Fri, 25 Oct 2019 11:41:29 +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 6/7] mmc: dw_mmc: Fix debugfs on 64-bit platforms

"dw_mci.pending_events" and "dw_mci.completed_events" are "unsigned
long", i.e. 32-bit or 64-bit, depending on the platform.  Hence casting
their addresses 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: f95f3850f7a9e1d4 ("mmc: dw_mmc: Add Synopsys DesignWare mmc host driver.")
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Acked-by: Ulf Hansson <ulf.hansson@...aro.org>
---
v2:
  - Add Acked-by.
---
 drivers/mmc/host/dw_mmc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index bf0048ebbda356a7..b4c4a9cd6365f122 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -177,10 +177,10 @@ static void dw_mci_init_debugfs(struct dw_mci_slot *slot)
 	debugfs_create_file("regs", S_IRUSR, root, host, &dw_mci_regs_fops);
 	debugfs_create_file("req", S_IRUSR, root, slot, &dw_mci_req_fops);
 	debugfs_create_u32("state", S_IRUSR, root, (u32 *)&host->state);
-	debugfs_create_x32("pending_events", S_IRUSR, root,
-			   (u32 *)&host->pending_events);
-	debugfs_create_x32("completed_events", S_IRUSR, root,
-			   (u32 *)&host->completed_events);
+	debugfs_create_xul("pending_events", S_IRUSR, root,
+			   &host->pending_events);
+	debugfs_create_xul("completed_events", S_IRUSR, root,
+			   &host->completed_events);
 }
 #endif /* defined(CONFIG_DEBUG_FS) */
 
-- 
2.17.1