linux-kernel - [PATCH v1 1/1] pinctrl: intel: No need to disable IRQs in the handler

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Date:   Thu,  4 Mar 2021 12:54:32 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Andy Shevchenko <andy@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH v1 1/1] pinctrl: intel: No need to disable IRQs in the handler

In IRQ handler interrupts are already disabled, hence no need
to repeat it. Even in the threaded case, which is disabled here,
it is not a problem because IRQ framework serializes descriptor
handling. Remove disabling IRQ part in the handler.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/pinctrl/intel/pinctrl-intel.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index 93237d6e4316..268aaad3bb08 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -1173,16 +1173,15 @@ static int intel_gpio_community_irq_handler(struct intel_pinctrl *pctrl,
 	for (gpp = 0; gpp < community->ngpps; gpp++) {
 		const struct intel_padgroup *padgrp = &community->gpps[gpp];
 		unsigned long pending, enabled, gpp_offset;
-		unsigned long flags;
 
-		raw_spin_lock_irqsave(&pctrl->lock, flags);
+		raw_spin_lock(&pctrl->lock);
 
 		pending = readl(community->regs + community->is_offset +
 				padgrp->reg_num * 4);
 		enabled = readl(community->regs + community->ie_offset +
 				padgrp->reg_num * 4);
 
-		raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+		raw_spin_unlock(&pctrl->lock);
 
 		/* Only interrupts that are enabled */
 		pending &= enabled;
-- 
2.30.1