Messages in this thread Patch in this message | | | From | <> | 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 |
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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
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