linux-kernel - [PATCH 4.20 53/80] gpio: sprd: Fix incorrect irq type setting for the async EIC

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Date:   Mon,  4 Feb 2019 11:37:13 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Neo Hou <neo.hou@...soc.com>,
        Baolin Wang <baolin.wang@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH 4.20 53/80] gpio: sprd: Fix incorrect irq type setting for the async EIC

4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Neo Hou <neo.hou@...soc.com>

commit f785ffb61605734b518afa766d1b5445e9f38c8d upstream.

When setting async EIC as IRQ_TYPE_EDGE_BOTH type, we missed to set the
SPRD_EIC_ASYNC_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: Neo Hou <neo.hou@...soc.com>
Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
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
@@ -379,6 +379,7 @@ 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_ASYNC_INTMODE, 0);
 			sprd_eic_update(chip, offset, SPRD_EIC_ASYNC_INTBOTH, 1);
 			irq_set_handler_locked(data, handle_edge_irq);
 			break;