[PATCH 5.4 008/154] pinctrl: bcm281xx: Fix incorrect regmap max_registers value

Greg Kroah-Hartman
2025-04-08T12:03:37Z

From: Artur Weber <aweber.kernel@gmail.com>

[ Upstream commit 68283c1cb573143c0b7515e93206f3503616bc10 ]

The max_registers value does not take into consideration the stride;
currently, it's set to the number of the last pin, but this does not
accurately represent the final register.

Fix this by multiplying the current value by 4.

Fixes: 54b1aa5a5b16 ("ARM: pinctrl: Add Broadcom Capri pinctrl driver")
Signed-off-by: Artur Weber <aweber.kernel@gmail.com>
Link: https://lore.kernel.org/20250207-bcm21664-pinctrl-v1-2-e7cfac9b2d3b@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/bcm/pinctrl-bcm281xx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/bcm/pinctrl-bcm281xx.c b/drivers/pinctrl/bcm/pinctrl-bcm281xx.c
index bc3b232a727a5..3452005342ad6 100644
--- a/drivers/pinctrl/bcm/pinctrl-bcm281xx.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm281xx.c
@@ -981,7 +981,7 @@ static const struct regmap_config bcm281xx_pinctrl_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .max_register = BCM281XX_PIN_VC_CAM3_SDA,
+ .max_register = BCM281XX_PIN_VC_CAM3_SDA * 4,
};

static int bcm281xx_pinctrl_get_groups_count(struct pinctrl_dev *pctldev)
--
2.39.5