Hi!
> I can (and will) test whatever patches is needed. Also will try to get rid of uuid helpers and send a patch today.
>
So ... here's patch that you can start from, and that may even work...
Thanks,
Pavel
Signed-off-by: Pavel Machek <pavel@xxxxxx>
diff --git a/drivers/staging/tidspbridge/rmgr/drv_interface.c b/drivers/staging/tidspbridge/rmgr/drv_interface.c
index 1aa4a3f..a8e86cf 100644
--- a/drivers/staging/tidspbridge/rmgr/drv_interface.c
+++ b/drivers/staging/tidspbridge/rmgr/drv_interface.c
@@ -258,7 +258,17 @@ err:
/* This function maps kernel space memory to user space memory. */
static int bridge_mmap(struct file *filp, struct vm_area_struct *vma)
{
- u32 status;
+ int status;
+ struct omap_dsp_platform_data *pdata =
+ omap_dspbridge_dev->dev.platform_data;
+ unsigned long start = vma->vm_pgoff << PAGE_SHIFT;
+
+ if (start < pdata->phys_mempool_base)
+ return -EINVAL;
+
+ if (vma->vm_end - vma->vm_start + (start - pdata->phys_mempool_base)
+ > pdata->phys_mempool_size)
+ return -EINVAL;
/* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
@@ -271,10 +281,10 @@ static int bridge_mmap(struct file *filp, struct vm_area_struct *vma)
status = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
vma->vm_end - vma->vm_start,
vma->vm_page_prot);
- if (status != 0)
- status = -EAGAIN;
+ if (status)
+ return -EAGAIN;
- return status;
+ return 0;
}
static const struct file_operations bridge_fops = {
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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