On Tue, Apr 01, 2025 at 05:28:43PM +0200, Christian König wrote: > > > Am 01.04.25 um 17:12 schrieb Maxime Ripard: > > The system heap has been using its struct dma_heap pointer but wasn't > > using it anywhere. > > > > Since we'll need additional parameters to attach to that heap type, > > let's create a private structure and set it as the dma_heap drvdata, > > removing the global variable in the process. > > > > Signed-off-by: Maxime Ripard <[email protected]> > > --- > > drivers/dma-buf/heaps/system_heap.c | 17 ++++++++++++----- > > 1 file changed, 12 insertions(+), 5 deletions(-) > > > > diff --git a/drivers/dma-buf/heaps/system_heap.c > > b/drivers/dma-buf/heaps/system_heap.c > > index > > 26d5dc89ea1663a0d078e3a5723ca3d8d12b935f..adf422eaa33a52794f952d9d4260b8743d37f421 > > 100644 > > --- a/drivers/dma-buf/heaps/system_heap.c > > +++ b/drivers/dma-buf/heaps/system_heap.c > > @@ -19,11 +19,13 @@ > > #include <linux/module.h> > > #include <linux/scatterlist.h> > > #include <linux/slab.h> > > #include <linux/vmalloc.h> > > > > -static struct dma_heap *sys_heap; > > +struct system_heap { > > + struct dma_heap *heap; > > +}; > > > > struct system_heap_buffer { > > struct dma_heap *heap; > > struct list_head attachments; > > struct mutex lock; > > @@ -422,17 +424,22 @@ static const struct dma_heap_ops system_heap_ops = { > > }; > > > > static int __init system_heap_create(void) > > { > > struct dma_heap_export_info exp_info; > > + struct system_heap *sys_heap; > > + > > + sys_heap = kzalloc(sizeof(*sys_heap), GFP_KERNEL); > > + if (!sys_heap) > > + return -ENOMEM; > > > > exp_info.name = "system"; > > exp_info.ops = &system_heap_ops; > > - exp_info.priv = NULL; > > + exp_info.priv = sys_heap; > > Why do you even need this?
Urgh, sorry. I'm not even sure how I ended up with that patch, but you're correct. I'll send a much simpler version. Maxime
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