From 3b9a19e08960e5cdad5253998637653e592a3c29 Mon Sep 17 00:00:00 2001 From: "Yann E. MORIN" Date: Sun, 28 Apr 2013 22:36:38 +0200 Subject: kconfig: loop as long as we changed some symbols in randconfig Because of choice-in-a-choice constructs, it can happen that not all symbols are assigned a value during randconfig, leading in rare cases to this situation: ---8<--- choice-in-choice.in choice bool "A/B/C" config A bool "A" config B bool "B" if B choice bool "E/F" config E bool "E" config F bool "F" endchoice endif # B config C bool "C" endchoice ---8<--- $ ./scripts/kconfig/conf --randconfig choice-in-choice.in [--SNIP--] $ ./scripts/kconfig/conf --silentoldconfig choice-in-choice.in 2. B (B) 3. C (C) choice[1-3]: 2 E/F > 1. E (E) (NEW) 2. F (F) (NEW) choice[1-2]: aborted! Console input/output is redirected. Run 'make oldconfig' to update configuration. Fix this by looping in randconfig for as long as some symbol gets assigned a value. Note: this was spotted with the USB EHCI Debug Device Gadget (USB_G_DBGP), which uses this choice-in-a-choice construct, and exhibits this problem. The example above is just a stripped-down minimalist test-case. Signed-off-by: "Yann E. MORIN" --- scripts/kconfig/confdata.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) (limited to 'scripts/kconfig/confdata.c') diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c index d36bc1f1d563..c55c227af463 100644 --- a/scripts/kconfig/confdata.c +++ b/scripts/kconfig/confdata.c @@ -1040,7 +1040,7 @@ void conf_set_changed_callback(void (*fn)(void)) conf_changed_callback = fn; } -static void randomize_choice_values(struct symbol *csym) +static bool randomize_choice_values(struct symbol *csym) { struct property *prop; struct symbol *sym; @@ -1053,7 +1053,7 @@ static void randomize_choice_values(struct symbol *csym) * In both cases stop. */ if (csym->curr.tri != yes) - return; + return false; prop = sym_get_choice_prop(csym); @@ -1084,6 +1084,8 @@ static void randomize_choice_values(struct symbol *csym) csym->flags |= SYMBOL_DEF_USER; /* clear VALID to get value calculated */ csym->flags &= ~(SYMBOL_VALID); + + return true; } void set_all_choice_values(struct symbol *csym) @@ -1106,7 +1108,7 @@ void set_all_choice_values(struct symbol *csym) csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES); } -void conf_set_all_new_symbols(enum conf_def_mode mode) +bool conf_set_all_new_symbols(enum conf_def_mode mode) { struct symbol *sym, *csym; int i, cnt, pby, pty, ptm; /* pby: probability of boolean = y @@ -1154,6 +1156,7 @@ void conf_set_all_new_symbols(enum conf_def_mode mode) exit( 1 ); } } + bool has_changed = false; for_all_symbols(i, sym) { if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID)) @@ -1161,6 +1164,7 @@ void conf_set_all_new_symbols(enum conf_def_mode mode) switch (sym_get_type(sym)) { case S_BOOLEAN: case S_TRISTATE: + has_changed = true; switch (mode) { case def_yes: sym->def[S_DEF_USER].tri = yes; @@ -1219,6 +1223,12 @@ void conf_set_all_new_symbols(enum conf_def_mode mode) sym_calc_value(csym); if (mode == def_random) - randomize_choice_values(csym); + has_changed = randomize_choice_values(csym); + else { + set_all_choice_values(csym); + has_changed = true; + } } + + return has_changed; } -- cgit v1.2.3