[xen master] VT-d: bring print_qi_regs() in line with print_iommu_regs()

[patchbot@xxxxxxx]

commit d8b05ce83fd17920752d608ab3a0ff31027472d1
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Tue Apr 13 10:15:41 2021 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Apr 13 10:15:41 2021 +0200

    VT-d: bring print_qi_regs() in line with print_iommu_regs()
    
    Shorten the names printed. There's also no need to go through a local
    variable.
    
    While at it also constify the function's parameter.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
---
 xen/drivers/passthrough/vtd/qinval.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/xen/drivers/passthrough/vtd/qinval.c 
b/xen/drivers/passthrough/vtd/qinval.c
index 764ef9f0fc..6100e778f3 100644
--- a/xen/drivers/passthrough/vtd/qinval.c
+++ b/xen/drivers/passthrough/vtd/qinval.c
@@ -33,18 +33,11 @@
 
 static int __must_check invalidate_sync(struct vtd_iommu *iommu);
 
-static void print_qi_regs(struct vtd_iommu *iommu)
+static void print_qi_regs(const struct vtd_iommu *iommu)
 {
-    u64 val;
-
-    val = dmar_readq(iommu->reg, DMAR_IQA_REG);
-    printk("DMAR_IQA_REG = %"PRIx64"\n", val);
-
-    val = dmar_readq(iommu->reg, DMAR_IQH_REG);
-    printk("DMAR_IQH_REG = %"PRIx64"\n", val);
-
-    val = dmar_readq(iommu->reg, DMAR_IQT_REG);
-    printk("DMAR_IQT_REG = %"PRIx64"\n", val);
+    printk(" IQA = %"PRIx64"\n", dmar_readq(iommu->reg, DMAR_IQA_REG));
+    printk(" IQH = %"PRIx64"\n", dmar_readq(iommu->reg, DMAR_IQH_REG));
+    printk(" IQT = %"PRIx64"\n", dmar_readq(iommu->reg, DMAR_IQT_REG));
 }
 
 static unsigned int qinval_next_index(struct vtd_iommu *iommu)
--
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