From: "Niklas Söderlund" <niklas.soderlund@ragnatech.se>
To: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
Kieran Bingham <kieran+renesas@ksquared.org.uk>
Subject: Re: [PATCH 14/13] v4l: vsp1: Fix spinlock in mixed IRQ context function
Date: Wed, 14 Sep 2016 21:30:01 +0200 [thread overview]
Message-ID: <20160914193000.GM739@bigcity.dyn.berto.se> (raw)
In-Reply-To: <1473809348-5222-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com>
On 2016-09-14 02:29:08 +0300, Laurent Pinchart wrote:
> 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>
> ---
> drivers/media/platform/vsp1/vsp1_wpf.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c
> index b4ecffbaa3e3..c483fead3e98 100644
> --- a/drivers/media/platform/vsp1/vsp1_wpf.c
> +++ b/drivers/media/platform/vsp1/vsp1_wpf.c
> @@ -251,11 +251,12 @@ 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;
>
> --
> Regards,
>
> Laurent Pinchart
>
--
Regards,
Niklas Söderlund
prev parent reply other threads:[~2016-09-14 19:30 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-13 23:16 [PATCH 00/13] Renesas R-Car VSP: Scaling and rotation support on Gen3 Laurent Pinchart
2016-09-13 23:16 ` [PATCH 01/13] v4l: vsp1: Prevent pipelines from running when not streaming Laurent Pinchart
2016-09-13 23:16 ` [PATCH 02/13] v4l: vsp1: Protect against race conditions between get and set format Laurent Pinchart
2016-09-14 18:23 ` Niklas Söderlund
2016-09-14 19:32 ` Niklas Söderlund
2016-09-14 19:50 ` Laurent Pinchart
2016-09-13 23:16 ` [PATCH 03/13] v4l: vsp1: Ensure pipeline locking in resume path Laurent Pinchart
2016-09-14 18:28 ` Niklas Söderlund
2016-09-13 23:16 ` [PATCH 04/13] v4l: vsp1: Repair race between frame end and qbuf handler Laurent Pinchart
2016-09-14 8:01 ` Kieran Bingham
2016-09-13 23:16 ` [PATCH 05/13] v4l: vsp1: Use DFE instead of FRE for frame end Laurent Pinchart
2016-09-14 18:39 ` Niklas Söderlund
2016-09-13 23:16 ` [PATCH 06/13] v4l: vsp1: Disable cropping on WPF sink pad Laurent Pinchart
2016-09-14 18:54 ` Niklas Söderlund
2016-09-19 17:55 ` Mauro Carvalho Chehab
2016-09-19 17:59 ` Laurent Pinchart
2016-09-19 18:26 ` Mauro Carvalho Chehab
2016-09-19 18:33 ` Laurent Pinchart
2016-09-19 19:02 ` Mauro Carvalho Chehab
2016-09-13 23:17 ` [PATCH 07/13] v4l: vsp1: Fix RPF cropping Laurent Pinchart
2016-09-13 23:17 ` [PATCH 08/13] v4l: vsp1: Pass parameter type to entity configuration operation Laurent Pinchart
2016-09-14 19:02 ` Niklas Söderlund
2016-09-13 23:17 ` [PATCH 09/13] v4l: vsp1: Replace .set_memory() with VSP1_ENTITY_PARAMS_PARTITION Laurent Pinchart
2016-09-13 23:17 ` [PATCH 10/13] v4l: vsp1: Support chained display lists Laurent Pinchart
2016-09-13 23:17 ` [PATCH 11/13] v4l: vsp1: Determine partition requirements for scaled images Laurent Pinchart
2016-09-14 19:27 ` Niklas Söderlund
2016-09-14 20:00 ` Laurent Pinchart
2016-09-15 13:19 ` Niklas Söderlund
2016-09-13 23:17 ` [PATCH 12/13] v4l: vsp1: Support multiple partitions per frame Laurent Pinchart
2016-09-13 23:17 ` [PATCH 13/13] v4l: vsp1: wpf: Implement rotation support Laurent Pinchart
2016-09-13 23:29 ` [PATCH 14/13] v4l: vsp1: Fix spinlock in mixed IRQ context function Laurent Pinchart
2016-09-14 19:30 ` Niklas Söderlund [this message]
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