From: Bartosz Golaszewski <brgl@bgdev.pl>
To: Linus Walleij <linus.walleij@linaro.org>,
Marek Vasut <marek.vasut@gmail.com>,
Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: [PATCH] gpio: pca953x: disable regmap locking
Date: Tue, 7 Apr 2020 17:42:45 +0200 [thread overview]
Message-ID: <20200407154245.2548-1-brgl@bgdev.pl> (raw)
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This driver uses its own locking but regmap silently uses a mutex for
all operations too. Add the option to disable locking to the regmap
config struct.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
drivers/gpio/gpio-pca953x.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 5638b4e5355f..40da1954d74b 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -306,6 +306,7 @@ static const struct regmap_config pca953x_i2c_regmap = {
.writeable_reg = pca953x_writeable_register,
.volatile_reg = pca953x_volatile_register,
+ .disable_locking = true,
.cache_type = REGCACHE_RBTREE,
/* REVISIT: should be 0x7f but some 24 bit chips use REG_ADDR_AI */
.max_register = 0xff,
--
2.25.0
next reply other threads:[~2020-04-07 15:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-07 15:42 Bartosz Golaszewski [this message]
2020-04-07 16:44 ` [PATCH] gpio: pca953x: disable regmap locking Geert Uytterhoeven
2020-04-16 9:53 ` Linus Walleij
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