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net: Drop unusual use of do { } while (0); 

For a couple of macros in pcnet.c, we have to provide a new scope
to avoid compiler warnings about declarations in the middle of a
switch statement that aren't in a sub-scope.  But use of
'do { ... } while (0);' merely to provide that new scope is arcane
overkill, compared to just using '{ ... }'.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20171201232433.25193-2-eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Eric Blake 2017-12-01 17:24:27 -06:00 committed by Paolo Bonzini
parent 01960e6d21
commit 1b4c0a0436
1 changed files with 10 additions and 10 deletions
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20
hw/net/pcnet.c
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@ -456,32 +456,32 @@ static inline void pcnet_rmd_store(PCNetState *s, struct pcnet_RMD *rmd,
#define CHECK_RMD(ADDR,RES) do { \
switch (BCR_SWSTYLE(s)) { \
case 0x00: \
do { \
{ \
uint16_t rda[4]; \
s->phys_mem_read(s->dma_opaque, (ADDR), \
(void *)&rda[0], sizeof(rda), 0); \
(RES) |= (rda[2] & 0xf000)!=0xf000; \
(RES) |= (rda[3] & 0xf000)!=0x0000; \
} while (0); \
} \
break; \
case 0x01: \
case 0x02: \
do { \
{ \
uint32_t rda[4]; \
s->phys_mem_read(s->dma_opaque, (ADDR), \
(void *)&rda[0], sizeof(rda), 0); \
(RES) |= (rda[1] & 0x0000f000L)!=0x0000f000L; \
(RES) |= (rda[2] & 0x0000f000L)!=0x00000000L; \
} while (0); \
} \
break; \
case 0x03: \
do { \
{ \
uint32_t rda[4]; \
s->phys_mem_read(s->dma_opaque, (ADDR), \
(void *)&rda[0], sizeof(rda), 0); \
(RES) |= (rda[0] & 0x0000f000L)!=0x00000000L; \
(RES) |= (rda[1] & 0x0000f000L)!=0x0000f000L; \
} while (0); \
} \
break; \
} \
} while (0)
@ -489,22 +489,22 @@ static inline void pcnet_rmd_store(PCNetState *s, struct pcnet_RMD *rmd,
#define CHECK_TMD(ADDR,RES) do { \
switch (BCR_SWSTYLE(s)) { \
case 0x00: \
do { \
{ \
uint16_t xda[4]; \
s->phys_mem_read(s->dma_opaque, (ADDR), \
(void *)&xda[0], sizeof(xda), 0); \
(RES) |= (xda[2] & 0xf000)!=0xf000; \
} while (0); \
} \
break; \
case 0x01: \
case 0x02: \
case 0x03: \
do { \
{ \
uint32_t xda[4]; \
s->phys_mem_read(s->dma_opaque, (ADDR), \
(void *)&xda[0], sizeof(xda), 0); \
(RES) |= (xda[1] & 0x0000f000L)!=0x0000f000L; \
} while (0); \
} \
break; \
} \
} while (0)