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path: root/drivers/gpio/gpio-pca953x.c
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Diffstat (limited to 'drivers/gpio/gpio-pca953x.c')
-rw-r--r--drivers/gpio/gpio-pca953x.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index c31ad558d056..378b206d2dc9 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* PCA953x 4/8/16/24/40 bit I/O ports
*
@@ -5,10 +6,6 @@
* Copyright (C) 2007 Marvell International Ltd.
*
* Derived from drivers/i2c/chips/pca9539.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
*/
#include <linux/acpi.h>
@@ -308,7 +305,8 @@ static const struct regmap_config pca953x_i2c_regmap = {
.volatile_reg = pca953x_volatile_register,
.cache_type = REGCACHE_RBTREE,
- .max_register = 0x7f,
+ /* REVISIT: should be 0x7f but some 24 bit chips use REG_ADDR_AI */
+ .max_register = 0xff,
};
static u8 pca953x_recalc_addr(struct pca953x_chip *chip, int reg, int off,