On Wed, Aug 08, 2012 at 03:53:10PM +0200, Tomasz Stanislawski wrote: > Hi Laurent, > > On 08/08/2012 03:35 PM, Laurent Pinchart wrote: > > Hi Tomasz, > > > > Thanks for the patch. > > > > On Wednesday 08 August 2012 12:17:41 Tomasz Stanislawski wrote: > >> This patch adds reference counting on a module that exports dma-buf and > >> implements its operations. This prevents the module from being unloaded > >> while DMABUF file is in use. > >> > >> Signed-off-by: Tomasz Stanislawski <t.stanislaws@xxxxxxxxxxx> > >> --- > >> Documentation/dma-buf-sharing.txt | 3 ++- > >> drivers/base/dma-buf.c | 10 +++++++++- > >> drivers/gpu/drm/exynos/exynos_drm_dmabuf.c | 1 + > >> drivers/gpu/drm/i915/i915_gem_dmabuf.c | 1 + > >> drivers/gpu/drm/nouveau/nouveau_prime.c | 1 + > >> drivers/gpu/drm/radeon/radeon_prime.c | 1 + > >> drivers/staging/omapdrm/omap_gem_dmabuf.c | 1 + > >> include/linux/dma-buf.h | 2 ++ > >> 8 files changed, 18 insertions(+), 2 deletions(-) > >> > [snip] > > >> @@ -96,6 +98,7 @@ struct dma_buf *dma_buf_export(void *priv, const struct > >> dma_buf_ops *ops, struct file *file; > >> > >> if (WARN_ON(!priv || !ops > >> + || !ops->owner > > Thank you for spotting this. > I didn'y know that try_get_module returned true is module was NULL. > > BTW. Is it worth to add ".owner = THIS_MODULE," to all dma_buf > exporters in this patch? Yeah, I think that makes sense. Otherwise it might get lost somewhere, i.e. you can smash my Ack on this. -Daniel -- Daniel Vetter Mail: daniel@xxxxxxxx Mobile: +41 (0)79 365 57 48 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
