[xen master] xen/arm: smmuv3: Add missing U for shifted constant

[patchbot@xxxxxxx]

commit 05a01367610316ccb49e7ab6af79f5d3cc12a986
Author:     Michal Orzel <michal.orzel@xxxxxxx>
AuthorDate: Wed Sep 6 14:54:22 2023 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Sep 6 14:54:22 2023 +0200

    xen/arm: smmuv3: Add missing U for shifted constant
    
    When running with SMMUv3 and UBSAN enabled, the following is printed:
    
    (XEN) UBSAN: Undefined behaviour in drivers/passthrough/arm/smmu-v3.c:297:12
    (XEN) left shift of 1 by 31 places cannot be represented in type 'int'
    
    This refers to shift in Q_OVERFLOW_FLAG that is missing 'U' suffix.
    While there, also fix the same in GBPA_UPDATE.
    
    This should address MISRA Rule 7.2:
        A "u" or "U" suffix shall be applied to all integer constants that
        are represented in an unsigned type
    
    Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
    Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
---
 xen/drivers/passthrough/arm/smmu-v3.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/drivers/passthrough/arm/smmu-v3.h 
b/xen/drivers/passthrough/arm/smmu-v3.h
index b381ad3738..05f6b1fb7e 100644
--- a/xen/drivers/passthrough/arm/smmu-v3.h
+++ b/xen/drivers/passthrough/arm/smmu-v3.h
@@ -87,7 +87,7 @@
 #define CR2_E2H                                (1 << 0)
 
 #define ARM_SMMU_GBPA                  0x44
-#define GBPA_UPDATE                    (1 << 31)
+#define GBPA_UPDATE                    (1U << 31)
 #define GBPA_ABORT                     (1 << 20)
 
 #define ARM_SMMU_IRQ_CTRL              0x50
@@ -159,7 +159,7 @@
 
 #define Q_IDX(llq, p)                  ((p) & ((1 << (llq)->max_n_shift) - 1))
 #define Q_WRP(llq, p)                  ((p) & (1 << (llq)->max_n_shift))
-#define Q_OVERFLOW_FLAG                        (1 << 31)
+#define Q_OVERFLOW_FLAG                        (1U << 31)
 #define Q_OVF(p)                       ((p) & Q_OVERFLOW_FLAG)
 #define Q_ENT(q, p)                    ((q)->base +                    \
                                         Q_IDX(&((q)->llq), p) *        \
--
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