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[PATCH 4.1 27/46] i2c: rcar: enable RuntimePM before registering to the core

From Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Newsgroups linux.kernel
Subject [PATCH 4.1 27/46] i2c: rcar: enable RuntimePM before registering to the core
Date 2015-10-23 20:10 +0200
Message-ID <qmOWV-DI-75@gated-at.bofh.it> (permalink)
References <qmONc-d5-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wolfram Sang <wsa+renesas@sang-engineering.com>

commit 4f7effddf4549d57114289f273710f077c4c330a upstream.

The core may register clients attached to this master which may use
funtionality from the master. So, RuntimePM must be enabled before, otherwise
this will fail. While here, move drvdata, too.

Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/i2c/busses/i2c-rcar.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -688,15 +688,16 @@ static int rcar_i2c_probe(struct platfor
 		return ret;
 	}
 
+	pm_runtime_enable(dev);
+	platform_set_drvdata(pdev, priv);
+
 	ret = i2c_add_numbered_adapter(adap);
 	if (ret < 0) {
 		dev_err(dev, "reg adap failed: %d\n", ret);
+		pm_runtime_disable(dev);
 		return ret;
 	}
 
-	pm_runtime_enable(dev);
-	platform_set_drvdata(pdev, priv);
-
 	dev_info(dev, "probed\n");
 
 	return 0;


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Thread

[PATCH 4.1 00/46] 4.1.12-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 05/46] inet: fix races in reqsk_queue_hash_req() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 06/46] net: add pfmemalloc check in sk_add_backlog() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 04/46] skbuff: Fix skb checksum partial check. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 02/46] l2tp: protect tunnel->del_work by ref_count Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 16/46] af_unix: return data from multiple SKBs on recv() with MSG_PEEK flag Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 30/46] i2c: designware-platdrv: enable RuntimePM before registering to the core Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 29/46] i2c: designware: Do not use parameters from ACPI on Dell Inspiron 7348 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 34/46] drm/radeon: attach tile property to mst connector Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 17/46] net/unix: fix logic about sk_peek_offset Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 32/46] drm/nouveau/fbcon: take runpm reference when userspace has an open fd Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 09/46] bpf: fix panic in SO_GET_FILTER with native ebpf programs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 27/46] i2c: rcar: enable RuntimePM before registering to the core Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 31/46] workqueue: make sure delayed work run in local cpu Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
  [PATCH 4.1 39/46] sched/preempt: Fix cond_resched_lock() and cond_resched_softirq() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-23 20:10 +0200
    Re: [PATCH 4.1 39/46] sched/preempt: Fix cond_resched_lock() and  cond_resched_softirq() Thomas Backlund <backlund.thomas@gmail.com> - 2015-10-23 22:20 +0200
      Re: [PATCH 4.1 39/46] sched/preempt: Fix cond_resched_lock() and  cond_resched_softirq() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-24 01:30 +0200
  Re: [PATCH 4.1 00/46] 4.1.12-stable review Shuah Khan <shuahkh@osg.samsung.com> - 2015-10-23 22:40 +0200
    Re: [PATCH 4.1 00/46] 4.1.12-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-24 01:30 +0200
      Re: [PATCH 4.1 00/46] 4.1.12-stable review Guenter Roeck <linux@roeck-us.net> - 2015-10-24 03:20 +0200
  Re: [PATCH 4.1 00/46] 4.1.12-stable review Guenter Roeck <linux@roeck-us.net> - 2015-10-24 05:20 +0200
    Re: [PATCH 4.1 00/46] 4.1.12-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-24 15:30 +0200

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