[dpdk-test-report] |WARNING| pw63734 [PATCH] net/e1000: update UPDATE_VF_STAT to handle rollover
checkpatch at dpdk.org
checkpatch at dpdk.org
Wed Dec 11 03:49:36 CET 2019
Test-Label: checkpatch
Test-Status: WARNING
http://dpdk.org/patch/63734
_coding style issues_
CHECK:MACRO_ARG_REUSE: Macro argument reuse 'last' - possible side-effects?
#83: FILE: drivers/net/e1000/igb_ethdev.c:264:
+#define UPDATE_VF_STAT(reg, last, cur) \
+{ \
+ u32 latest = E1000_READ_REG(hw, reg); \
+ if (latest >= last) \
+ cur += (latest - last); \
+ else \
+ cur += ((latest + ((uint64_t)1 << 32)) - last); \
+ cur &= UINT_MAX; \
+ last = latest; \
}
CHECK:MACRO_ARG_PRECEDENCE: Macro argument 'last' may be better as '(last)' to avoid precedence issues
#83: FILE: drivers/net/e1000/igb_ethdev.c:264:
+#define UPDATE_VF_STAT(reg, last, cur) \
+{ \
+ u32 latest = E1000_READ_REG(hw, reg); \
+ if (latest >= last) \
+ cur += (latest - last); \
+ else \
+ cur += ((latest + ((uint64_t)1 << 32)) - last); \
+ cur &= UINT_MAX; \
+ last = latest; \
}
CHECK:MACRO_ARG_REUSE: Macro argument reuse 'cur' - possible side-effects?
#83: FILE: drivers/net/e1000/igb_ethdev.c:264:
+#define UPDATE_VF_STAT(reg, last, cur) \
+{ \
+ u32 latest = E1000_READ_REG(hw, reg); \
+ if (latest >= last) \
+ cur += (latest - last); \
+ else \
+ cur += ((latest + ((uint64_t)1 << 32)) - last); \
+ cur &= UINT_MAX; \
+ last = latest; \
}
CHECK:MACRO_ARG_PRECEDENCE: Macro argument 'cur' may be better as '(cur)' to avoid precedence issues
#83: FILE: drivers/net/e1000/igb_ethdev.c:264:
+#define UPDATE_VF_STAT(reg, last, cur) \
+{ \
+ u32 latest = E1000_READ_REG(hw, reg); \
+ if (latest >= last) \
+ cur += (latest - last); \
+ else \
+ cur += ((latest + ((uint64_t)1 << 32)) - last); \
+ cur &= UINT_MAX; \
+ last = latest; \
}
total: 0 errors, 0 warnings, 4 checks, 20 lines checked
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