linux-kernel - [PATCH v2 resend 1/4] sh: sh7722: Remove nonexistent GPIO

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1505205657-18012-2-git-send-email-geert+renesas@glider.be>
Date:   Tue, 12 Sep 2017 10:40:54 +0200
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        Magnus Damm <magnus.damm@...il.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        linux-sh@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v2 resend 1/4] sh: sh7722: Remove nonexistent GPIO_PTQ7 to fix pinctrl registration

On sh7722/Migo-R, pinctrl registration fails with:

    sh-pfc pfc-sh7722: pin 0 already registered
    sh-pfc pfc-sh7722: error during pin registration
    sh-pfc pfc-sh7722: could not register: -22
    sh-pfc: probe of pfc-sh7722 failed with error -22

pinmux_pins[] is initialized through PINMUX_GPIO(), using designated
array initializers, where the GPIO_* enums serve as indices.
As GPIO_PTQ7 is defined in the enum, but never used, pinmux_pins[]
contains a (zero-filled) hole. Hence this entry is treated as pin zero,
which was registered before, and pinctrl registration fails.

According to the datasheet, port PTQ7 does not exist. Hence remove
GPIO_PTQ7 from the enum to fix this.

Fixes: 8d7b5b0af7e070b9 ("sh: Add sh7722 pinmux code")
Reported-by: Magnus Damm <magnus.damm@...il.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Tested-by: Jacopo Mondi <jacopo+renesas@...ndi.org>
---
Tested on sh7722/Migo-R.

v2:
  - Add Reviewed-by, Tested-by.
---
 arch/sh/include/cpu-sh4/cpu/sh7722.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sh/include/cpu-sh4/cpu/sh7722.h b/arch/sh/include/cpu-sh4/cpu/sh7722.h
index 3bb74e534d0f8ca4..78961ab78a5a9c83 100644
--- a/arch/sh/include/cpu-sh4/cpu/sh7722.h
+++ b/arch/sh/include/cpu-sh4/cpu/sh7722.h
@@ -67,7 +67,7 @@ enum {
 	GPIO_PTN3, GPIO_PTN2, GPIO_PTN1, GPIO_PTN0,
 
 	/* PTQ */
-	GPIO_PTQ7, GPIO_PTQ6, GPIO_PTQ5, GPIO_PTQ4,
+	GPIO_PTQ6, GPIO_PTQ5, GPIO_PTQ4,
 	GPIO_PTQ3, GPIO_PTQ2, GPIO_PTQ1, GPIO_PTQ0,
 
 	/* PTR */
-- 
2.7.4