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f0cbd3b83e
Circumvent the following gcc 10 allyesconfig build regression:
CC drivers/leds/trigger/ledtrig-cpu.o
In file included from ./arch/s390/include/asm/bitops.h:39,
from ./include/linux/bitops.h:29,
from ./include/linux/kernel.h:12,
from drivers/leds/trigger/ledtrig-cpu.c:18:
./arch/s390/include/asm/atomic_ops.h: In function 'ledtrig_cpu':
./arch/s390/include/asm/atomic_ops.h:46:2: warning: 'asm' operand 1 probably does not match constraints
46 | asm volatile( \
| ^~~
./arch/s390/include/asm/atomic_ops.h:53:2: note: in expansion of macro '__ATOMIC_CONST_OP'
53 | __ATOMIC_CONST_OP(op_name, op_type, op_string, "\n") \
| ^~~~~~~~~~~~~~~~~
./arch/s390/include/asm/atomic_ops.h:56:1: note: in expansion of macro '__ATOMIC_CONST_OPS'
56 | __ATOMIC_CONST_OPS(__atomic_add_const, int, "asi")
| ^~~~~~~~~~~~~~~~~~
./arch/s390/include/asm/atomic_ops.h:46:2: error: impossible constraint in 'asm'
46 | asm volatile( \
| ^~~
./arch/s390/include/asm/atomic_ops.h:53:2: note: in expansion of macro '__ATOMIC_CONST_OP'
53 | __ATOMIC_CONST_OP(op_name, op_type, op_string, "\n") \
| ^~~~~~~~~~~~~~~~~
./arch/s390/include/asm/atomic_ops.h:56:1: note: in expansion of macro '__ATOMIC_CONST_OPS'
56 | __ATOMIC_CONST_OPS(__atomic_add_const, int, "asi")
| ^~~~~~~~~~~~~~~~~~
scripts/Makefile.build:280: recipe for target 'drivers/leds/trigger/ledtrig-cpu.o' failed
By swapping conditions as proposed here:
https://gcc.gnu.org/pipermail/gcc-patches/2020-July/549318.html
Suggested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.