linux-kernel - [PATCH 4.19 027/100] gpio: eic: sprd: Fix incorrect irq type setting for the sync EIC

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Message-Id: <20190430113610.145108698@linuxfoundation.org>
Date:   Tue, 30 Apr 2019 13:37:56 +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, Baolin Wang <baolin.wang@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 4.19 027/100] gpio: eic: sprd: Fix incorrect irq type setting for the sync EIC

From: Baolin Wang <baolin.wang@...aro.org>

commit 102bbe34b31c9159e714432afd64458f6f3876d7 upstream.

When setting sync EIC as IRQ_TYPE_EDGE_BOTH type, we missed to set the
SPRD_EIC_SYNC_INTMODE register to 0, which means detecting edge signals.

Thus this patch fixes the issue.

Fixes: 25518e024e3a ("gpio: Add Spreadtrum EIC driver support")
Cc: <stable@...r.kernel.org>
Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpio/gpio-eic-sprd.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpio/gpio-eic-sprd.c
+++ b/drivers/gpio/gpio-eic-sprd.c
@@ -414,6 +414,7 @@ static int sprd_eic_irq_set_type(struct
 			irq_set_handler_locked(data, handle_edge_irq);
 			break;
 		case IRQ_TYPE_EDGE_BOTH:
+			sprd_eic_update(chip, offset, SPRD_EIC_SYNC_INTMODE, 0);
 			sprd_eic_update(chip, offset, SPRD_EIC_SYNC_INTBOTH, 1);
 			irq_set_handler_locked(data, handle_edge_irq);
 			break;