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Message-id: <1426879403-19265-5-git-send-email-b.zolnierkie@samsung.com>
Date:	Fri, 20 Mar 2015 20:23:22 +0100
From:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:	Lee Jones <lee.jones@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>
Cc:	Johan Hovold <johan@...nel.org>,
	Support Opensource <support.opensource@...semi.com>,
	Milo Kim <milo.kim@...com>,
	patches@...nsource.wolfsonmicro.com,
	Fabio Estevam <fabio.estevam@...escale.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	linux-kernel@...r.kernel.org, b.zolnierkie@...sung.com,
	stable@...r.kernel.org
Subject: [PATCH v2 4/5] mfd: wm831x: Fix platform device ids to avoid probe
 failure

Commit 6e3f62f0793e ("mfd: core: Fix platform-device id generation")
changed the way platform device ids are generated from mfd id base and
cell ids in mfd_add_device().  Unfortunately the change in question
breaks mfd drivers which are using mfd_add_devices() with mfd id base
equal to -1 and non-zero cell ids (used to distinguish cells with
the same name field).  The result is that mfd core tries to register
platform devices with the same name which obviously fails and leads
to mfd device probe failure.

Changing mfd_add_devices() mfd id base from -1 to 0 and at the same
time setting proper cell ids for all cells fixes the issue.

Fixes: 6e3f62f0793e ("mfd: core: Fix platform-device id generation")
Cc: Johan Hovold <johan@...nel.org>
Cc: patches@...nsource.wolfsonmicro.com
Cc: <stable@...r.kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
---
stable v3.19+

 drivers/mfd/wm831x-core.c | 184 +++++++++++++++++++++++++++-------------------
 1 file changed, 107 insertions(+), 77 deletions(-)

diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index 28366a9..68a7543 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -1014,152 +1014,159 @@ static struct resource wm831x_wdt_resources[] = {
 static const struct mfd_cell wm8310_devs[] = {
 	{
 		.name = "wm831x-backup",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-buckv",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
 		.resources = wm831x_dcdc1_resources,
 	},
 	{
 		.name = "wm831x-buckv",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
 		.resources = wm831x_dcdc2_resources,
 	},
 	{
 		.name = "wm831x-buckp",
-		.id = 3,
+		.id = 2,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
 		.resources = wm831x_dcdc3_resources,
 	},
 	{
 		.name = "wm831x-boostp",
-		.id = 4,
+		.id = 3,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
 		.resources = wm831x_dcdc4_resources,
 	},
 	{
 		.name = "wm831x-clk",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-epe",
-		.id = 1,
+		.id = 0,
 	},
 	{
 		.name = "wm831x-epe",
-		.id = 2,
+		.id = 1,
 	},
 	{
 		.name = "wm831x-gpio",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
 		.resources = wm831x_gpio_resources,
 	},
 	{
 		.name = "wm831x-hwmon",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-isink",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
 		.resources = wm831x_isink1_resources,
 	},
 	{
 		.name = "wm831x-isink",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
 		.resources = wm831x_isink2_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
 		.resources = wm831x_ldo1_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
 		.resources = wm831x_ldo2_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 3,
+		.id = 2,
 		.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
 		.resources = wm831x_ldo3_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 4,
+		.id = 3,
 		.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
 		.resources = wm831x_ldo4_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 5,
+		.id = 4,
 		.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
 		.resources = wm831x_ldo5_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 6,
+		.id = 5,
 		.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
 		.resources = wm831x_ldo6_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 7,
+		.id = 6,
 		.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
 		.resources = wm831x_ldo7_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 8,
+		.id = 7,
 		.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
 		.resources = wm831x_ldo8_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 9,
+		.id = 8,
 		.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
 		.resources = wm831x_ldo9_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 10,
+		.id = 9,
 		.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
 		.resources = wm831x_ldo10_resources,
 	},
 	{
 		.name = "wm831x-alive-ldo",
-		.id = 11,
+		.id = 10,
 		.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
 		.resources = wm831x_ldo11_resources,
 	},
 	{
 		.name = "wm831x-on",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_on_resources),
 		.resources = wm831x_on_resources,
 	},
 	{
 		.name = "wm831x-power",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_power_resources),
 		.resources = wm831x_power_resources,
 	},
 	{
 		.name = "wm831x-status",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_status1_resources),
 		.resources = wm831x_status1_resources,
 	},
 	{
 		.name = "wm831x-status",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_status2_resources),
 		.resources = wm831x_status2_resources,
 	},
 	{
 		.name = "wm831x-watchdog",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
 		.resources = wm831x_wdt_resources,
 	},
@@ -1168,128 +1175,135 @@ static const struct mfd_cell wm8310_devs[] = {
 static const struct mfd_cell wm8311_devs[] = {
 	{
 		.name = "wm831x-backup",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-buckv",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
 		.resources = wm831x_dcdc1_resources,
 	},
 	{
 		.name = "wm831x-buckv",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
 		.resources = wm831x_dcdc2_resources,
 	},
 	{
 		.name = "wm831x-buckp",
-		.id = 3,
+		.id = 2,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
 		.resources = wm831x_dcdc3_resources,
 	},
 	{
 		.name = "wm831x-boostp",
-		.id = 4,
+		.id = 3,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
 		.resources = wm831x_dcdc4_resources,
 	},
 	{
 		.name = "wm831x-clk",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-epe",
-		.id = 1,
+		.id = 0,
 	},
 	{
 		.name = "wm831x-epe",
-		.id = 2,
+		.id = 1,
 	},
 	{
 		.name = "wm831x-gpio",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
 		.resources = wm831x_gpio_resources,
 	},
 	{
 		.name = "wm831x-hwmon",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-isink",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
 		.resources = wm831x_isink1_resources,
 	},
 	{
 		.name = "wm831x-isink",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
 		.resources = wm831x_isink2_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
 		.resources = wm831x_ldo1_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
 		.resources = wm831x_ldo2_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 3,
+		.id = 2,
 		.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
 		.resources = wm831x_ldo3_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 4,
+		.id = 3,
 		.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
 		.resources = wm831x_ldo4_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 5,
+		.id = 4,
 		.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
 		.resources = wm831x_ldo5_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 7,
+		.id = 6,
 		.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
 		.resources = wm831x_ldo7_resources,
 	},
 	{
 		.name = "wm831x-alive-ldo",
-		.id = 11,
+		.id = 10,
 		.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
 		.resources = wm831x_ldo11_resources,
 	},
 	{
 		.name = "wm831x-on",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_on_resources),
 		.resources = wm831x_on_resources,
 	},
 	{
 		.name = "wm831x-power",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_power_resources),
 		.resources = wm831x_power_resources,
 	},
 	{
 		.name = "wm831x-status",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_status1_resources),
 		.resources = wm831x_status1_resources,
 	},
 	{
 		.name = "wm831x-status",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_status2_resources),
 		.resources = wm831x_status2_resources,
 	},
 	{
 		.name = "wm831x-watchdog",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
 		.resources = wm831x_wdt_resources,
 	},
@@ -1298,152 +1312,159 @@ static const struct mfd_cell wm8311_devs[] = {
 static const struct mfd_cell wm8312_devs[] = {
 	{
 		.name = "wm831x-backup",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-buckv",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
 		.resources = wm831x_dcdc1_resources,
 	},
 	{
 		.name = "wm831x-buckv",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
 		.resources = wm831x_dcdc2_resources,
 	},
 	{
 		.name = "wm831x-buckp",
-		.id = 3,
+		.id = 2,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
 		.resources = wm831x_dcdc3_resources,
 	},
 	{
 		.name = "wm831x-boostp",
-		.id = 4,
+		.id = 3,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
 		.resources = wm831x_dcdc4_resources,
 	},
 	{
 		.name = "wm831x-clk",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-epe",
-		.id = 1,
+		.id = 0,
 	},
 	{
 		.name = "wm831x-epe",
-		.id = 2,
+		.id = 1,
 	},
 	{
 		.name = "wm831x-gpio",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
 		.resources = wm831x_gpio_resources,
 	},
 	{
 		.name = "wm831x-hwmon",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-isink",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
 		.resources = wm831x_isink1_resources,
 	},
 	{
 		.name = "wm831x-isink",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
 		.resources = wm831x_isink2_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
 		.resources = wm831x_ldo1_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
 		.resources = wm831x_ldo2_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 3,
+		.id = 2,
 		.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
 		.resources = wm831x_ldo3_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 4,
+		.id = 3,
 		.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
 		.resources = wm831x_ldo4_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 5,
+		.id = 4,
 		.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
 		.resources = wm831x_ldo5_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 6,
+		.id = 5,
 		.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
 		.resources = wm831x_ldo6_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 7,
+		.id = 6,
 		.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
 		.resources = wm831x_ldo7_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 8,
+		.id = 7,
 		.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
 		.resources = wm831x_ldo8_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 9,
+		.id = 8,
 		.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
 		.resources = wm831x_ldo9_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 10,
+		.id = 9,
 		.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
 		.resources = wm831x_ldo10_resources,
 	},
 	{
 		.name = "wm831x-alive-ldo",
-		.id = 11,
+		.id = 10,
 		.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
 		.resources = wm831x_ldo11_resources,
 	},
 	{
 		.name = "wm831x-on",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_on_resources),
 		.resources = wm831x_on_resources,
 	},
 	{
 		.name = "wm831x-power",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_power_resources),
 		.resources = wm831x_power_resources,
 	},
 	{
 		.name = "wm831x-status",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_status1_resources),
 		.resources = wm831x_status1_resources,
 	},
 	{
 		.name = "wm831x-status",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_status2_resources),
 		.resources = wm831x_status2_resources,
 	},
 	{
 		.name = "wm831x-watchdog",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
 		.resources = wm831x_wdt_resources,
 	},
@@ -1452,127 +1473,133 @@ static const struct mfd_cell wm8312_devs[] = {
 static const struct mfd_cell wm8320_devs[] = {
 	{
 		.name = "wm831x-backup",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-buckv",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
 		.resources = wm831x_dcdc1_resources,
 	},
 	{
 		.name = "wm831x-buckv",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
 		.resources = wm831x_dcdc2_resources,
 	},
 	{
 		.name = "wm831x-buckp",
-		.id = 3,
+		.id = 2,
 		.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
 		.resources = wm831x_dcdc3_resources,
 	},
 	{
 		.name = "wm831x-buckp",
-		.id = 4,
+		.id = 3,
 		.num_resources = ARRAY_SIZE(wm8320_dcdc4_buck_resources),
 		.resources = wm8320_dcdc4_buck_resources,
 	},
 	{
 		.name = "wm831x-clk",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-gpio",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
 		.resources = wm831x_gpio_resources,
 	},
 	{
 		.name = "wm831x-hwmon",
+		.id = -1,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
 		.resources = wm831x_ldo1_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
 		.resources = wm831x_ldo2_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 3,
+		.id = 2,
 		.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
 		.resources = wm831x_ldo3_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 4,
+		.id = 3,
 		.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
 		.resources = wm831x_ldo4_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 5,
+		.id = 4,
 		.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
 		.resources = wm831x_ldo5_resources,
 	},
 	{
 		.name = "wm831x-ldo",
-		.id = 6,
+		.id = 5,
 		.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
 		.resources = wm831x_ldo6_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 7,
+		.id = 6,
 		.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
 		.resources = wm831x_ldo7_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 8,
+		.id = 7,
 		.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
 		.resources = wm831x_ldo8_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 9,
+		.id = 8,
 		.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
 		.resources = wm831x_ldo9_resources,
 	},
 	{
 		.name = "wm831x-aldo",
-		.id = 10,
+		.id = 9,
 		.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
 		.resources = wm831x_ldo10_resources,
 	},
 	{
 		.name = "wm831x-alive-ldo",
-		.id = 11,
+		.id = 10,
 		.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
 		.resources = wm831x_ldo11_resources,
 	},
 	{
 		.name = "wm831x-on",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_on_resources),
 		.resources = wm831x_on_resources,
 	},
 	{
 		.name = "wm831x-status",
-		.id = 1,
+		.id = 0,
 		.num_resources = ARRAY_SIZE(wm831x_status1_resources),
 		.resources = wm831x_status1_resources,
 	},
 	{
 		.name = "wm831x-status",
-		.id = 2,
+		.id = 1,
 		.num_resources = ARRAY_SIZE(wm831x_status2_resources),
 		.resources = wm831x_status2_resources,
 	},
 	{
 		.name = "wm831x-watchdog",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
 		.resources = wm831x_wdt_resources,
 	},
@@ -1581,6 +1608,7 @@ static const struct mfd_cell wm8320_devs[] = {
 static const struct mfd_cell touch_devs[] = {
 	{
 		.name = "wm831x-touch",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_touch_resources),
 		.resources = wm831x_touch_resources,
 	},
@@ -1589,6 +1617,7 @@ static const struct mfd_cell touch_devs[] = {
 static const struct mfd_cell rtc_devs[] = {
 	{
 		.name = "wm831x-rtc",
+		.id = -1,
 		.num_resources = ARRAY_SIZE(wm831x_rtc_resources),
 		.resources = wm831x_rtc_resources,
 	},
@@ -1597,6 +1626,7 @@ static const struct mfd_cell rtc_devs[] = {
 static const struct mfd_cell backlight_devs[] = {
 	{
 		.name = "wm831x-backlight",
+		.id = -1,
 	},
 };
 
@@ -1774,7 +1804,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
 	if (pdata && pdata->wm831x_num)
 		wm831x_num = pdata->wm831x_num * 10;
 	else
-		wm831x_num = -1;
+		wm831x_num = 0;
 
 	ret = wm831x_irq_init(wm831x, irq);
 	if (ret != 0)
-- 
1.8.2.3

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