linux-kernel - [PATCH 5.0 085/117] ARM: OMAP1: ams-delta: Fix broken GPIO ID allocation

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Message-Id: <20190415183749.239839757@linuxfoundation.org>
Date:   Mon, 15 Apr 2019 21:00:55 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Janusz Krzysztofik <jmkrzyszt@...il.com>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        Tony Lindgren <tony@...mide.com>
Subject: [PATCH 5.0 085/117] ARM: OMAP1: ams-delta: Fix broken GPIO ID allocation

From: Janusz Krzysztofik <jmkrzyszt@...il.com>

commit 3e2cf62efec52fb49daed437cc486c3cb9a0afa2 upstream.

In order to request dynamic allocationn of GPIO IDs, a negative number
should be passed as a base GPIO ID via platform data.  Unfortuntely,
commit 771e53c4d1a1 ("ARM: OMAP1: ams-delta: Drop board specific global
GPIO numbers") didn't follow that rule while switching to dynamically
allocated GPIO IDs for Amstrad Delta latches, making their IDs
overlapping with those already assigned to OMAP GPIO devices.  Fix it.

Fixes: 771e53c4d1a1 ("ARM: OMAP1: ams-delta: Drop board specific global GPIO numbers")
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@...il.com>
Cc: stable@...r.kernel.org
Acked-by: Aaro Koskinen <aaro.koskinen@....fi>
Signed-off-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/mach-omap1/board-ams-delta.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/arm/mach-omap1/board-ams-delta.c
+++ b/arch/arm/mach-omap1/board-ams-delta.c
@@ -182,6 +182,7 @@ static struct resource latch1_resources[
 
 static struct bgpio_pdata latch1_pdata = {
 	.label	= LATCH1_LABEL,
+	.base	= -1,
 	.ngpio	= LATCH1_NGPIO,
 };
 
@@ -219,6 +220,7 @@ static struct resource latch2_resources[
 
 static struct bgpio_pdata latch2_pdata = {
 	.label	= LATCH2_LABEL,
+	.base	= -1,
 	.ngpio	= LATCH2_NGPIO,
 };