"flags" passed to intel_svm_bind_mm() is a bit mask and should be
defined as "unsigned int" instead of "int".

Change its type to "unsigned int".

Suggested-by: Thomas Gleixner <t...@linutronix.de>
Signed-off-by: Fenghua Yu <fenghua...@intel.com>
Reviewed-by: Tony Luck <tony.l...@intel.com>
Reviewed-by: Lu Baolu <baolu...@linux.intel.com>
---
v5:
- Reviewed by Lu Baolu

v2:
- Add this new patch per Thomas' comment.

 drivers/iommu/intel/svm.c   | 7 ++++---
 include/linux/intel-iommu.h | 2 +-
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c
index e78a74a9c1cf..fc90a079e228 100644
--- a/drivers/iommu/intel/svm.c
+++ b/drivers/iommu/intel/svm.c
@@ -446,7 +446,8 @@ int intel_svm_unbind_gpasid(struct device *dev, u32 pasid)
 
 /* Caller must hold pasid_mutex, mm reference */
 static int
-intel_svm_bind_mm(struct device *dev, int flags, struct svm_dev_ops *ops,
+intel_svm_bind_mm(struct device *dev, unsigned int flags,
+                 struct svm_dev_ops *ops,
                  struct mm_struct *mm, struct intel_svm_dev **sd)
 {
        struct intel_iommu *iommu = device_to_iommu(dev, NULL, NULL);
@@ -1033,7 +1034,7 @@ intel_svm_bind(struct device *dev, struct mm_struct *mm, 
void *drvdata)
 {
        struct iommu_sva *sva = ERR_PTR(-EINVAL);
        struct intel_svm_dev *sdev = NULL;
-       int flags = 0;
+       unsigned int flags = 0;
        int ret;
 
        /*
@@ -1042,7 +1043,7 @@ intel_svm_bind(struct device *dev, struct mm_struct *mm, 
void *drvdata)
         * and intel_svm etc.
         */
        if (drvdata)
-               flags = *(int *)drvdata;
+               flags = *(unsigned int *)drvdata;
        mutex_lock(&pasid_mutex);
        ret = intel_svm_bind_mm(dev, flags, NULL, mm, &sdev);
        if (ret)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 7322073f62d0..9c3e8337442a 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -765,7 +765,7 @@ struct intel_svm {
        struct mm_struct *mm;
 
        struct intel_iommu *iommu;
-       int flags;
+       unsigned int flags;
        u32 pasid;
        int gpasid; /* In case that guest PASID is different from host PASID */
        struct list_head devs;
-- 
2.19.1

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

Reply via email to