From: Dmitry Osipenko <digetx@gmail.com> To: "Laxman Dewangan" <ldewangan@nvidia.com>, "Vinod Koul" <vkoul@kernel.org>, "Dan Williams" <dan.j.williams@intel.com>, "Thierry Reding" <thierry.reding@gmail.com>, "Jonathan Hunter" <jonathanh@nvidia.com>, "Michał Mirosław" <mirq-linux@rere.qmqm.pl> Cc: dmaengine@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 02/14] dmaengine: tegra-apb: Implement synchronization hook Date: Fri, 24 Jan 2020 02:03:13 +0300 [thread overview] Message-ID: <20200123230325.3037-3-digetx@gmail.com> (raw) In-Reply-To: <20200123230325.3037-1-digetx@gmail.com> The ISR tasklet could be kept scheduled after DMA transfer termination, let's add synchronization hook which blocks until tasklet is finished. Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- drivers/dma/tegra20-apb-dma.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index 319f31d27014..664e9c5df3ba 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -798,6 +798,13 @@ static int tegra_dma_terminate_all(struct dma_chan *dc) return 0; } +static void tegra_dma_synchronize(struct dma_chan *dc) +{ + struct tegra_dma_channel *tdc = to_tegra_dma_chan(dc); + + tasklet_kill(&tdc->tasklet); +} + static unsigned int tegra_dma_sg_bytes_xferred(struct tegra_dma_channel *tdc, struct tegra_dma_sg_req *sg_req) { @@ -1506,6 +1513,7 @@ static int tegra_dma_probe(struct platform_device *pdev) tdma->dma_dev.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; tdma->dma_dev.device_config = tegra_dma_slave_config; tdma->dma_dev.device_terminate_all = tegra_dma_terminate_all; + tdma->dma_dev.device_synchronize = tegra_dma_synchronize; tdma->dma_dev.device_tx_status = tegra_dma_tx_status; tdma->dma_dev.device_issue_pending = tegra_dma_issue_pending; -- 2.24.0
WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Osipenko <digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> To: "Laxman Dewangan" <ldewangan-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>, "Vinod Koul" <vkoul-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, "Dan Williams" <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, "Thierry Reding" <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, "Jonathan Hunter" <jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>, "Michał Mirosław" <mirq-linux-CoA6ZxLDdyEEUmgCuDUIdw@public.gmane.org> Cc: dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Subject: [PATCH v5 02/14] dmaengine: tegra-apb: Implement synchronization hook Date: Fri, 24 Jan 2020 02:03:13 +0300 [thread overview] Message-ID: <20200123230325.3037-3-digetx@gmail.com> (raw) In-Reply-To: <20200123230325.3037-1-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> The ISR tasklet could be kept scheduled after DMA transfer termination, let's add synchronization hook which blocks until tasklet is finished. Acked-by: Jon Hunter <jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> Signed-off-by: Dmitry Osipenko <digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> --- drivers/dma/tegra20-apb-dma.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index 319f31d27014..664e9c5df3ba 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -798,6 +798,13 @@ static int tegra_dma_terminate_all(struct dma_chan *dc) return 0; } +static void tegra_dma_synchronize(struct dma_chan *dc) +{ + struct tegra_dma_channel *tdc = to_tegra_dma_chan(dc); + + tasklet_kill(&tdc->tasklet); +} + static unsigned int tegra_dma_sg_bytes_xferred(struct tegra_dma_channel *tdc, struct tegra_dma_sg_req *sg_req) { @@ -1506,6 +1513,7 @@ static int tegra_dma_probe(struct platform_device *pdev) tdma->dma_dev.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; tdma->dma_dev.device_config = tegra_dma_slave_config; tdma->dma_dev.device_terminate_all = tegra_dma_terminate_all; + tdma->dma_dev.device_synchronize = tegra_dma_synchronize; tdma->dma_dev.device_tx_status = tegra_dma_tx_status; tdma->dma_dev.device_issue_pending = tegra_dma_issue_pending; -- 2.24.0
next prev parent reply other threads:[~2020-01-23 23:11 UTC|newest] Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-01-23 23:03 [PATCH v5 00/14] NVIDIA Tegra APB DMA driver fixes and improvements Dmitry Osipenko 2020-01-23 23:03 ` Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 01/14] dmaengine: tegra-apb: Fix use-after-free Dmitry Osipenko 2020-01-29 10:56 ` Jon Hunter 2020-01-29 10:56 ` Jon Hunter 2020-01-29 14:38 ` Dmitry Osipenko 2020-01-29 14:38 ` Dmitry Osipenko 2020-01-23 23:03 ` Dmitry Osipenko [this message] 2020-01-23 23:03 ` [PATCH v5 02/14] dmaengine: tegra-apb: Implement synchronization hook Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 03/14] dmaengine: tegra-apb: Prevent race conditions on channel's freeing Dmitry Osipenko 2020-01-23 23:03 ` Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 04/14] dmaengine: tegra-apb: Clean up tasklet releasing Dmitry Osipenko 2020-01-23 23:03 ` Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 05/14] dmaengine: tegra-apb: Prevent race conditions of tasklet vs free list Dmitry Osipenko 2020-01-29 11:01 ` Jon Hunter 2020-01-29 11:01 ` Jon Hunter 2020-01-29 14:39 ` Dmitry Osipenko 2020-01-29 14:39 ` Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 06/14] dmaengine: tegra-apb: Use devm_platform_ioremap_resource Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 07/14] dmaengine: tegra-apb: Use devm_request_irq Dmitry Osipenko 2020-01-23 23:03 ` Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 08/14] dmaengine: tegra-apb: Fix coding style problems Dmitry Osipenko 2020-01-29 11:03 ` Jon Hunter 2020-01-29 11:03 ` Jon Hunter 2020-01-29 14:31 ` Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 09/14] dmaengine: tegra-apb: Remove assumptions about unavailable runtime PM Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 10/14] dmaengine: tegra-apb: Keep clock enabled only during of DMA transfer Dmitry Osipenko 2020-01-23 23:03 ` Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 11/14] dmaengine: tegra-apb: Clean up suspend-resume Dmitry Osipenko 2020-01-23 23:03 ` Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 12/14] dmaengine: tegra-apb: Add missing of_dma_controller_free Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 13/14] dmaengine: tegra-apb: Allow to compile as a loadable kernel module Dmitry Osipenko 2020-01-23 23:03 ` Dmitry Osipenko 2020-01-23 23:03 ` [PATCH v5 14/14] dmaengine: tegra-apb: Remove MODULE_ALIAS Dmitry Osipenko 2020-01-23 23:03 ` Dmitry Osipenko
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20200123230325.3037-3-digetx@gmail.com \ --to=digetx@gmail.com \ --cc=dan.j.williams@intel.com \ --cc=dmaengine@vger.kernel.org \ --cc=jonathanh@nvidia.com \ --cc=ldewangan@nvidia.com \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-tegra@vger.kernel.org \ --cc=mirq-linux@rere.qmqm.pl \ --cc=thierry.reding@gmail.com \ --cc=vkoul@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.