Similar to the changes made in 270579d95f82 ("uio_mf624: Align memory
regions to page size and set correct offsets"), this will allow
uio_pdrv_genirq devices to expose memory regions that is not page-aligned,
requiring the users to respect the offset sysfs attribute (as implemented
in libuio).
Signed-off-by: Esben Haabendal <es...@geanix.com>
---
drivers/uio/uio_pdrv_genirq.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c
index b60173bc93ce..86f75a4fe0e3 100644
--- a/drivers/uio/uio_pdrv_genirq.c
+++ b/drivers/uio/uio_pdrv_genirq.c
@@ -187,8 +187,10 @@ static int uio_pdrv_genirq_probe(struct platform_device
*pdev)
}
uiomem->memtype = UIO_MEM_PHYS;
- uiomem->addr = r->start;
- uiomem->size = resource_size(r);
+ uiomem->addr = r->start & PAGE_MASK;
+ uiomem->offs = r->start & ~PAGE_MASK;
+ uiomem->size = (uiomem->offs + resource_size(r)
+ + PAGE_SIZE - 1) & PAGE_MASK;
uiomem->name = r->name;
++uiomem;
}
--
2.4.11
