[PATCH 8/9] iommu/vt-d: Convert the return type of first_pte_in_page to bool

Lu Baolu
2021-10-14T05:43:04Z

From: "Longpeng(Mike)" <longpeng2@huawei.com>

The first_pte_in_page() returns true or false, so let's convert its
return type to bool. In addition, use 'IS_ALIGNED' to make the
code more readable and neater.

Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Link: https://lore.kernel.org/r/20211008000433.1115-1-longpeng2@huawei.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
include/linux/intel-iommu.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 65b15af3cf1a..52481625838c 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -705,9 +705,9 @@ static inline bool dma_pte_superpage(struct dma_pte *pte)
return (pte->val & DMA_PTE_LARGE_PAGE);
}

-static inline int first_pte_in_page(struct dma_pte *pte)
+static inline bool first_pte_in_page(struct dma_pte *pte)
{
- return !((unsigned long)pte & ~VTD_PAGE_MASK);
+ return IS_ALIGNED((unsigned long)pte, VTD_PAGE_SIZE);
}

extern struct dmar_drhd_unit * dmar_find_matched_drhd_unit(struct pci_dev *dev);