linux-kernel - [PATCH v4 09/12] Input: wm831x-ts - request_irq by IRQF_NO_AUTOEN and remove disable

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20210128223538.20272-10-song.bao.hua@hisilicon.com>
Date:   Fri, 29 Jan 2021 11:35:35 +1300
From:   Barry Song <song.bao.hua@...ilicon.com>
To:     <tglx@...utronix.de>, <dmitry.torokhov@...il.com>,
        <maz@...nel.org>, <gregkh@...uxfoundation.org>,
        <linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <linuxarm@...neuler.org>, Barry Song <song.bao.hua@...ilicon.com>
Subject: [PATCH v4 09/12] Input: wm831x-ts - request_irq by IRQF_NO_AUTOEN and remove disable_irq

disable_irq() after request_irq() still has a time gap in which
interrupts can come. request_irq() with IRQF_NO_AUTOEN flag will
disable IRQ auto-enable because of requesting.

Signed-off-by: Barry Song <song.bao.hua@...ilicon.com>
---
 drivers/input/touchscreen/wm831x-ts.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/input/touchscreen/wm831x-ts.c b/drivers/input/touchscreen/wm831x-ts.c
index bb1699e0d3c7..319f57fb9af5 100644
--- a/drivers/input/touchscreen/wm831x-ts.c
+++ b/drivers/input/touchscreen/wm831x-ts.c
@@ -317,14 +317,13 @@ static int wm831x_ts_probe(struct platform_device *pdev)
 
 	error = request_threaded_irq(wm831x_ts->data_irq,
 				     NULL, wm831x_ts_data_irq,
-				     irqf | IRQF_ONESHOT,
+				     irqf | IRQF_ONESHOT | IRQF_NO_AUTOEN,
 				     "Touchscreen data", wm831x_ts);
 	if (error) {
 		dev_err(&pdev->dev, "Failed to request data IRQ %d: %d\n",
 			wm831x_ts->data_irq, error);
 		goto err_alloc;
 	}
-	disable_irq(wm831x_ts->data_irq);
 
 	if (pdata && pdata->pd_irqf)
 		irqf = pdata->pd_irqf;
-- 
2.25.1