4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Daniel Thompson <daniel.thompson@xxxxxxxxxx> commit 6244917f377bf64719551b58592a02a0336a7439 upstream. The code that handles case 14 (down) and case 16 (up) has been copy and pasted despite being byte-for-byte identical. Combine them. Cc: stable@xxxxxxxxxxxxxxx # Not a bug fix but it is needed for later bug fixes Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx> Tested-by: Justin Stitt <justinstitt@xxxxxxxxxx> Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-4-f236dbe9828d@xxxxxxxxxx Signed-off-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- kernel/debug/kdb/kdb_io.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) --- a/kernel/debug/kdb/kdb_io.c +++ b/kernel/debug/kdb/kdb_io.c @@ -314,6 +314,7 @@ poll_again: } break; case 14: /* Down */ + case 16: /* Up */ memset(tmpbuffer, ' ', strlen(kdb_prompt_str) + (lastchar-buffer)); *(tmpbuffer+strlen(kdb_prompt_str) + @@ -328,15 +329,6 @@ poll_again: ++cp; } break; - case 16: /* Up */ - memset(tmpbuffer, ' ', - strlen(kdb_prompt_str) + (lastchar-buffer)); - *(tmpbuffer+strlen(kdb_prompt_str) + - (lastchar-buffer)) = '\0'; - kdb_printf("\r%s\r", tmpbuffer); - *lastchar = (char)key; - *(lastchar+1) = '\0'; - return lastchar; case 9: /* Tab */ if (tab < 2) ++tab;
