[PATCH 4/4] dma-buf: Move code out of mutex-protected section in dma_buf_attach()
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: 2012-01-26 11:27:28
Subsystem:
driver core, kobjects, debugfs and sysfs, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
Some fields can be set without mutex protection. Initialize them before locking the mutex. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> --- drivers/base/dma-buf.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/base/dma-buf.c b/drivers/base/dma-buf.c
index 97450a5..8afe2dd 100644
--- a/drivers/base/dma-buf.c
+++ b/drivers/base/dma-buf.c@@ -192,10 +192,11 @@ struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf, if (attach == NULL) return ERR_PTR(-ENOMEM); - mutex_lock(&dmabuf->lock); - attach->dev = dev; attach->dmabuf = dmabuf; + + mutex_lock(&dmabuf->lock); + if (dmabuf->ops->attach) { ret = dmabuf->ops->attach(dmabuf, dev, attach); if (ret)
--
1.7.3.4
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