From: <Claudiu.Beznea@microchip.com>
To: <sre@kernel.org>, <Nicolas.Ferre@microchip.com>,
<alexandre.belloni@bootlin.com>
Cc: <linux-pm@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <Claudiu.Beznea@microchip.com>
Subject: [PATCH 3/4] power: reset: at91-poweroff: check shdwc data structure at the beginning of probe
Date: Mon, 5 Nov 2018 11:14:28 +0000 [thread overview]
Message-ID: <1541416443-4321-4-git-send-email-claudiu.beznea@microchip.com> (raw)
In-Reply-To: <1541416443-4321-1-git-send-email-claudiu.beznea@microchip.com>
Check at91_shdwc before continuing with probe since we want only one instance of
this driver. Inspired from commit 9f1e44774be5 ("power: reset: at91-poweroff:
do not procede if at91_shdwc is allocated").
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/power/reset/at91-poweroff.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/power/reset/at91-poweroff.c b/drivers/power/reset/at91-poweroff.c
index 48661e04a3de..e75d8f0f0526 100644
--- a/drivers/power/reset/at91-poweroff.c
+++ b/drivers/power/reset/at91-poweroff.c
@@ -160,6 +160,9 @@ static int __init at91_poweroff_probe(struct platform_device *pdev)
u32 ddr_type;
int ret;
+ if (at91_shdwc)
+ return -EBUSY;
+
at91_shdwc = devm_kzalloc(&pdev->dev, sizeof(*at91_shdwc), GFP_KERNEL);
if (!at91_shdwc)
return -ENOMEM;
--
2.7.4
next prev parent reply other threads:[~2018-11-05 11:14 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-05 11:14 [PATCH 0/4] power: reset: at91-poweroff: cleanups Claudiu.Beznea
2018-11-05 11:14 ` [PATCH 1/4] power: reset: at91-poweroff: use one poweroff function for at91-poweroff Claudiu.Beznea
2018-12-05 22:37 ` Sebastian Reichel
2018-11-05 11:14 ` [PATCH 2/4] power: reset: at91-poweroff: move shdwc related data to one structure Claudiu.Beznea
2018-11-06 21:09 ` Alexandre Belloni
2018-11-07 14:54 ` Claudiu.Beznea
2018-11-07 17:23 ` Alexandre Belloni
2018-12-05 22:40 ` Sebastian Reichel
2018-12-06 9:48 ` Claudiu.Beznea
2018-11-05 11:14 ` Claudiu.Beznea [this message]
2018-12-05 22:38 ` [PATCH 3/4] power: reset: at91-poweroff: check shdwc data structure at the beginning of probe Sebastian Reichel
2018-11-05 11:14 ` [PATCH 4/4] power: reset: at91-poweroff: remove at91_ramc_of_match Claudiu.Beznea
2018-12-05 22:37 ` Sebastian Reichel
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