A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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power: reset: at91-poweroff: do not procede if at91_shdwc is allocated

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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 <[email protected]>
Acked-by: Nicolas Ferre <[email protected]>
Signed-off-by: Sebastian Reichel <[email protected]>
This commit is contained in:
Claudiu Beznea 2018-08-30 14:50:11 +03:00 • committed by Sebastian Reichel
commit 9f1e44774b
1 changed files with 3 additions and 0 deletions
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3
drivers/power/reset/at91-sama5d2_shdwc.c
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@ -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;