Hello Sean,
when I compile for Kendryte K210 I see the following build warnings:
In file included from drivers/clk/kendryte/clk.c:15: include/kendryte/pll.h:46: warning: "nop" redefined 46 | #define nop() | In file included from ./arch/riscv/include/asm/io.h:13, from drivers/clk/kendryte/clk.c:7: ./arch/riscv/include/asm/barrier.h:16: note: this is the location of the previous definition 16 | #define nop() __asm__ __volatile__ ("nop") | In file included from ./arch/riscv/include/asm/io.h:13, from drivers/clk/kendryte/pll.c:8: ./arch/riscv/include/asm/barrier.h:16: warning: "nop" redefined 16 | #define nop() __asm__ __volatile__ ("nop") | In file included from drivers/clk/kendryte/pll.c:6: include/kendryte/pll.h:46: note: this is the location of the previous definition 46 | #define nop() |
Should nop() be the assembler instruction nop or nothing?
Best regards
Heinrich