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Message-Id: <20220727161032.356154881@linuxfoundation.org>
Date: Wed, 27 Jul 2022 18:10:15 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Haibo Chen <haibo.chen@....com>,
Andy Shevchenko <andy.shevchenko@...il.com>,
Bartosz Golaszewski <brgl@...ev.pl>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 111/201] gpio: pca953x: use the correct register address when regcache sync during init
From: Haibo Chen <haibo.chen@....com>
[ Upstream commit b8c768ccdd8338504fb78370747728d5002b1b5a ]
For regcache_sync_region, we need to use pca953x_recalc_addr() to get
the real register address.
Fixes: ec82d1eba346 ("gpio: pca953x: Zap ad-hoc reg_output cache")
Fixes: 0f25fda840a9 ("gpio: pca953x: Zap ad-hoc reg_direction cache")
Signed-off-by: Haibo Chen <haibo.chen@....com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Signed-off-by: Bartosz Golaszewski <brgl@...ev.pl>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/gpio/gpio-pca953x.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 60b7616dd4aa..64befd6f702b 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -897,15 +897,18 @@ static int pca953x_irq_setup(struct pca953x_chip *chip,
static int device_pca95xx_init(struct pca953x_chip *chip, u32 invert)
{
DECLARE_BITMAP(val, MAX_LINE);
+ u8 regaddr;
int ret;
- ret = regcache_sync_region(chip->regmap, chip->regs->output,
- chip->regs->output + NBANK(chip) - 1);
+ regaddr = pca953x_recalc_addr(chip, chip->regs->output, 0);
+ ret = regcache_sync_region(chip->regmap, regaddr,
+ regaddr + NBANK(chip) - 1);
if (ret)
goto out;
- ret = regcache_sync_region(chip->regmap, chip->regs->direction,
- chip->regs->direction + NBANK(chip) - 1);
+ regaddr = pca953x_recalc_addr(chip, chip->regs->direction, 0);
+ ret = regcache_sync_region(chip->regmap, regaddr,
+ regaddr + NBANK(chip) - 1);
if (ret)
goto out;
--
2.35.1
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