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| author | Claudiu Beznea <claudiu.beznea@microchip.com> | 2018-08-30 14:50:11 +0300 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2018-09-16 12:32:17 +0200 |
| commit | 9f1e44774be578fb92776add95f1fcaf8284d692 (patch) | |
| tree | 33611b7c2e2da13f9493689fc0b9d97d561fe0f5 | |
| parent | d12f84906bcb9384d0bf58726688fb60aac8a100 (diff) | |
| download | linux-stable-9f1e44774be578fb92776add95f1fcaf8284d692.tar.gz linux-stable-9f1e44774be578fb92776add95f1fcaf8284d692.tar.bz2 linux-stable-9f1e44774be578fb92776add95f1fcaf8284d692.zip | |
power: reset: at91-poweroff: do not procede if at91_shdwc is allocated
There should be only one instance of struct shdwc in the system. This is
referenced through at91_shdwc. Return in probe if at91_shdwc is already
allocated.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
| -rw-r--r-- | drivers/power/reset/at91-sama5d2_shdwc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/power/reset/at91-sama5d2_shdwc.c b/drivers/power/reset/at91-sama5d2_shdwc.c index ad6e2796690a..2b686c55b717 100644 --- a/drivers/power/reset/at91-sama5d2_shdwc.c +++ b/drivers/power/reset/at91-sama5d2_shdwc.c @@ -255,6 +255,9 @@ static int __init at91_shdwc_probe(struct platform_device *pdev) if (!pdev->dev.of_node) return -ENODEV; + if (at91_shdwc) + return -EBUSY; + at91_shdwc = devm_kzalloc(&pdev->dev, sizeof(*at91_shdwc), GFP_KERNEL); if (!at91_shdwc) return -ENOMEM; |