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 <[email protected]> --- 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
