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| author | Brian Masney <bmasney@redhat.com> | 2026-01-20 20:07:23 +0300 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2026-01-20 22:24:05 +0300 |
| commit | 0dfffa5479d6260d04d021f69203b1926f73d889 (patch) | |
| tree | 34ef03f492adcb150f979154b9ab992a6f75c00c | |
| parent | e318f5721da8c47c95171b810427fba995c67c24 (diff) | |
| download | linux-0dfffa5479d6260d04d021f69203b1926f73d889.tar.xz | |
openrisc: define arch-specific version of nop()
When compiling a driver written for MIPS on OpenRISC that uses the nop()
function, it fails due to the following error:
drivers/watchdog/pic32-wdt.c: Assembler messages:
drivers/watchdog/pic32-wdt.c:125: Error: unrecognized instruction `nop'
The driver currently uses the generic version of nop() from
include/asm-generic/barrier.h:
#ifndef nop
#define nop() asm volatile ("nop")
#endif
Let's fix this on OpenRISC by defining an architecture-specific version
of nop().
This was tested by performing an allmodconfig openrisc cross compile on
an aarch64 host.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202601180236.BVy480We-lkp@intel.com/
Signed-off-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
| -rw-r--r-- | arch/openrisc/include/asm/barrier.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/openrisc/include/asm/barrier.h b/arch/openrisc/include/asm/barrier.h index 7538294721be..8e592c990902 100644 --- a/arch/openrisc/include/asm/barrier.h +++ b/arch/openrisc/include/asm/barrier.h @@ -4,6 +4,8 @@ #define mb() asm volatile ("l.msync" ::: "memory") +#define nop() asm volatile ("l.nop") + #include <asm-generic/barrier.h> #endif /* __ASM_BARRIER_H */ |