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When DYNAMIC_DEBUG enabled, pr_debug() depends on KBUILD_MODNAME which
also depends on the modules number in Makefile. The related information
in "scripts/Makefile.lib" line 94:
# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
# end up in (or would, if it gets compiled in)
# Note: Files that end up in two or more modules are compiled without the
# KBUILD_MODNAME definition. The reason is that any made-up name would
# differ in different configs.
For this case, 'radio-si470x-i2c.o' and 'radio-si470x-common.o' are in
one line, so cause compiling issue. And 'uaccess.h' is a common shared
header (not specially for drivers), so use pr_devel() instead of is OK.
The related error with allmodconfig:
CC [M] drivers/media/radio/si470x/radio-si470x-i2c.o
CC [M] drivers/media/radio/si470x/radio-si470x-common.o
In file included from include/linux/printk.h:257:0,
from include/linux/kernel.h:13,
from drivers/media/radio/si470x/radio-si470x.h:29,
from drivers/media/radio/si470x/radio-si470x-common.c:115:
./arch/microblaze/include/asm/uaccess.h: In function 'access_ok':
include/linux/dynamic_debug.h:66:14: error: 'KBUILD_MODNAME' undeclared (first use in this function)
.modname = KBUILD_MODNAME, \
^
include/linux/dynamic_debug.h:76:2: note: in expansion of macro 'DEFINE_DYNAMIC_DEBUG_METADATA'
DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
^
include/linux/printk.h:263:2: note: in expansion of macro 'dynamic_pr_debug'
dynamic_pr_debug(fmt, ##__VA_ARGS__)
^
./arch/microblaze/include/asm/uaccess.h:101:3: note: in expansion of macro 'pr_debug'
pr_debug("ACCESS fail: %s at 0x%08x (size 0x%x), seg 0x%08x\n",
^
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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