From: gregkh@linuxfoundation.org (Greg KH)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3] dma-buf: add ref counting for module as exporter
Date: Tue, 12 May 2015 15:42:16 -0700 [thread overview]
Message-ID: <20150512224216.GA16712@kroah.com> (raw)
In-Reply-To: <1431092563-19799-1-git-send-email-sumit.semwal@linaro.org>
On Fri, May 08, 2015 at 07:12:43PM +0530, Sumit Semwal wrote:
> Add reference counting on a kernel module that exports dma-buf and
> implements its operations. This prevents the module from being unloaded
> while DMABUF file is in use.
>
> The original patch [1] was submitted by Tomasz Stanislawski, but this
> is a simpler way to do it.
>
> v3: call module_put() as late as possible, per gregkh's comment.
> v2: move owner to struct dma_buf, and use DEFINE_DMA_BUF_EXPORT_INFO
> macro to simplify the change.
>
> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
>
> [1]: https://lkml.org/lkml/2012/8/8/163
> ---
> drivers/dma-buf/dma-buf.c | 10 +++++++++-
> include/linux/dma-buf.h | 10 ++++++++--
> 2 files changed, 17 insertions(+), 3 deletions(-)
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
prev parent reply other threads:[~2015-05-12 22:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-08 13:42 [PATCH v3] dma-buf: add ref counting for module as exporter Sumit Semwal
2015-05-12 22:42 ` Greg KH [this message]
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