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[media] v4l: vsp1: Fix spinlock in mixed IRQ context function

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The wpf_configure() function can be called both from IRQ and non-IRQ
contexts, use spin_lock_irqsave().

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Laurent Pinchart 2016-09-13 20:19:29 -03:00 committed by Mauro Carvalho Chehab
parent fc6e514a72
commit 225c2926d8
1 changed files with 3 additions and 2 deletions
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5
drivers/media/platform/vsp1/vsp1_wpf.c
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@ -189,11 +189,12 @@ static void wpf_configure(struct vsp1_entity *entity,
if (params == VSP1_ENTITY_PARAMS_RUNTIME) {
const unsigned int mask = BIT(WPF_CTRL_VFLIP)
| BIT(WPF_CTRL_HFLIP);
unsigned long flags;
spin_lock(&wpf->flip.lock);
spin_lock_irqsave(&wpf->flip.lock, flags);
wpf->flip.active = (wpf->flip.active & ~mask)
| (wpf->flip.pending & mask);
spin_unlock(&wpf->flip.lock);
spin_unlock_irqrestore(&wpf->flip.lock, flags);
outfmt = (wpf->alpha << VI6_WPF_OUTFMT_PDV_SHIFT) | wpf->outfmt;