From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Mika Westerberg <mika.westerberg@linux.intel.com>,
linux-gpio@vger.kernel.org,
Linus Walleij <linus.walleij@linaro.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 02/10] pinctrl: intel: Reduce scope of the lock
Date: Wed, 10 Jun 2020 21:35:35 +0300 [thread overview]
Message-ID: <20200610183543.89414-2-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20200610183543.89414-1-andriy.shevchenko@linux.intel.com>
In some cases lock covers unneeded calls and operations.
Reduce scope of the lock in such cases.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/pinctrl/intel/pinctrl-intel.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index 9df5a0c0d416..d0b658ba2136 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -460,6 +460,8 @@ static int intel_gpio_request_enable(struct pinctrl_dev *pctldev,
void __iomem *padcfg0;
unsigned long flags;
+ padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0);
+
raw_spin_lock_irqsave(&pctrl->lock, flags);
if (!intel_pad_owned_by_host(pctrl, pin)) {
@@ -472,8 +474,6 @@ static int intel_gpio_request_enable(struct pinctrl_dev *pctldev,
return 0;
}
- padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0);
-
/*
* If pin is already configured in GPIO mode, we assume that
* firmware provides correct settings. In such case we avoid
@@ -503,11 +503,10 @@ static int intel_gpio_set_direction(struct pinctrl_dev *pctldev,
void __iomem *padcfg0;
unsigned long flags;
- raw_spin_lock_irqsave(&pctrl->lock, flags);
-
padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0);
- __intel_gpio_set_direction(padcfg0, input);
+ raw_spin_lock_irqsave(&pctrl->lock, flags);
+ __intel_gpio_set_direction(padcfg0, input);
raw_spin_unlock_irqrestore(&pctrl->lock, flags);
return 0;
@@ -622,10 +621,11 @@ static int intel_config_set_pull(struct intel_pinctrl *pctrl, unsigned int pin,
int ret = 0;
u32 value;
- raw_spin_lock_irqsave(&pctrl->lock, flags);
-
community = intel_get_community(pctrl, pin);
padcfg1 = intel_get_padcfg(pctrl, pin, PADCFG1);
+
+ raw_spin_lock_irqsave(&pctrl->lock, flags);
+
value = readl(padcfg1);
switch (param) {
--
2.27.0.rc2
next prev parent reply other threads:[~2020-06-10 18:35 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-10 18:35 [PATCH v1 01/10] pinctrl: intel: Disable input and output buffer when switching to GPIO Andy Shevchenko
2020-06-10 18:35 ` Andy Shevchenko [this message]
2020-06-10 18:35 ` [PATCH v1 03/10] pinctrl: intel: Make use of IRQ_RETVAL() Andy Shevchenko
2020-06-10 18:35 ` [PATCH v1 04/10] pinctrl: intel: Split intel_config_get() to three functions Andy Shevchenko
2020-06-10 18:35 ` [PATCH v1 05/10] pinctrl: intel: Get rid of redundant 'else' in intel_config_set_debounce() Andy Shevchenko
2020-06-10 18:35 ` [PATCH v1 06/10] pinctrl: intel: Drop the only label in the code for consistency Andy Shevchenko
2020-06-10 18:35 ` [PATCH v1 07/10] pinctrl: intel: Protect IO in few call backs by lock Andy Shevchenko
2020-06-10 18:35 ` [PATCH v1 08/10] pinctrl: intel: Introduce for_each_requested_gpio() macro Andy Shevchenko
2020-06-10 18:35 ` [PATCH v1 09/10] pinctrl: intel: Make use of for_each_requested_gpio() Andy Shevchenko
2020-06-10 18:35 ` [PATCH v1 10/10] pinctrl: lynxpoint: " Andy Shevchenko
2020-06-12 14:33 ` [PATCH v1 01/10] pinctrl: intel: Disable input and output buffer when switching to GPIO Andy Shevchenko
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