[PATCH] pinctrl: sh-pfc: checker: Fix miscalculation of number of states

[Geert Uytterhoeven <geert+renesas@xxxxxxxxx>]

The checker failed to validate all enum IDs in the description of a
register with fixed-width register fields, due to a miscalculation of
the number of described states: each register field of n bits can have
"1 << n" possible states, not "1".

Increase SH_PFC_MAX_ENUMS accordingly, now more enum IDs are checked
(SH-Mobile AG5 has more than 4000 enum IDs defined).

Fixes: 12d057bad683b1c6 ("pinctrl: sh-pfc: checker: Add check for enum ID conflicts")
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
To be queued in renesas-pinctrl-for-v5.18.

 drivers/pinctrl/renesas/core.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/renesas/core.c b/drivers/pinctrl/renesas/core.c
index 62b4c3145ba7c052..d0d4714731c14cf5 100644
--- a/drivers/pinctrl/renesas/core.c
+++ b/drivers/pinctrl/renesas/core.c
@@ -747,7 +747,7 @@ static int sh_pfc_suspend_init(struct sh_pfc *pfc) { return 0; }
 
 #ifdef DEBUG
 #define SH_PFC_MAX_REGS		300
-#define SH_PFC_MAX_ENUMS	3000
+#define SH_PFC_MAX_ENUMS	5000
 
 static unsigned int sh_pfc_errors __initdata;
 static unsigned int sh_pfc_warnings __initdata;
@@ -881,7 +881,8 @@ static void __init sh_pfc_check_cfg_reg(const char *drvname,
 			 GENMASK(cfg_reg->reg_width - 1, 0));
 
 	if (cfg_reg->field_width) {
-		n = cfg_reg->reg_width / cfg_reg->field_width;
+		fw = cfg_reg->field_width;
+		n = (cfg_reg->reg_width / fw) << fw;
 		/* Skip field checks (done at build time) */
 		goto check_enum_ids;
 	}
-- 
2.25.1