Building Linux 4.4 for ar71xx throws the following warnings in
drivers/net/phy/mdio-bitbang.c:
CC drivers/net/phy/mdio-bitbang.o
In file included from include/linux/irqflags.h:14:0,
from drivers/net/phy/mdio-bitbang.c:20:
drivers/net/phy/mdio-bitbang.c: In function 'mdiobb_read':
include/linux/typecheck.h:11:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/irqflags.h:63:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^
include/linux/irqflags.h:124:3: note: in expansion of macro 'raw_local_irq_save'
raw_local_irq_save(flags); \
^
drivers/net/phy/mdio-bitbang.c:162:2: note: in expansion of macro 'local_irq_save'
local_irq_save(flags);
^
include/linux/typecheck.h:11:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/irqflags.h:68:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^
include/linux/irqflags.h:126:39: note: in expansion of macro 'raw_local_irq_restore'
#define local_irq_restore(flags) do { raw_local_irq_restore(flags); } while (0)
^
drivers/net/phy/mdio-bitbang.c:175:2: note: in expansion of macro 'local_irq_restore'
local_irq_restore(flags);
^
drivers/net/phy/mdio-bitbang.c:159:11: warning: unused variable 'i' [-Wunused-variable]
int ret, i;
^
In file included from include/linux/irqflags.h:14:0,
from drivers/net/phy/mdio-bitbang.c:20:
drivers/net/phy/mdio-bitbang.c: In function 'mdiobb_write':
include/linux/typecheck.h:11:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/irqflags.h:63:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^
include/linux/irqflags.h:124:3: note: in expansion of macro 'raw_local_irq_save'
raw_local_irq_save(flags); \
^
drivers/net/phy/mdio-bitbang.c:185:2: note: in expansion of macro 'local_irq_save'
local_irq_save(flags);
^
include/linux/typecheck.h:11:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/irqflags.h:68:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^
include/linux/irqflags.h:126:39: note: in expansion of macro 'raw_local_irq_restore'
#define local_irq_restore(flags) do { raw_local_irq_restore(flags); } while (0)
^
drivers/net/phy/mdio-bitbang.c:200:2: note: in expansion of macro 'local_irq_restore'
local_irq_restore(flags);
^
These are caused by the 900-mdio_bitbang_ignore_ta_value and
901-phy-mdio-bitbang-prevent-rescheduling-during-command patches.
The first patch removes some code but it does not remove the variable
which is used by the removed code only.
The second patch adds local_irq_{save,restore} calls. The type of the
argument of these calls must be 'unsigned long', but the patch defines
the variable as 'long'.
Fix both patches to silence the warnings.
Signed-off-by: Gabor Juhos <juhosg@freemail.hu>
Gabor Juhos
Felix Fietkau