linux-kernel - [PATCH 1/2] vt_ioctl: Remove in

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Message-Id: <20210208181615.381861-2-bigeasy@linutronix.de>
Date:   Mon,  8 Feb 2021 19:16:14 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Ahmed S. Darwish" <a.darwish@...utronix.de>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH 1/2] vt_ioctl: Remove in_interrupt() check

From: "Ahmed S. Darwish" <a.darwish@...utronix.de>

reset_vc() uses a "!in_interrupt()" conditional before resetting the
palettes, which is a blocking operation. Since commit
   8b6312f4dcc1e ("[PATCH] vt: refactor console SAK processing")

all calls are invoked from a workqueue process context, with the
blocking console lock always acquired.

Remove the "!in_interrupt()" check.

Signed-off-by: Ahmed S. Darwish <a.darwish@...utronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 drivers/tty/vt/vt_ioctl.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c
index 4a4cbd4a5f37a..89aeaf3c1bca6 100644
--- a/drivers/tty/vt/vt_ioctl.c
+++ b/drivers/tty/vt/vt_ioctl.c
@@ -930,8 +930,7 @@ void reset_vc(struct vc_data *vc)
 	put_pid(vc->vt_pid);
 	vc->vt_pid = NULL;
 	vc->vt_newvt = -1;
-	if (!in_interrupt())    /* Via keyboard.c:SAK() - akpm */
-		reset_palette(vc);
+	reset_palette(vc);
 }
 
 void vc_SAK(struct work_struct *work)
-- 
2.30.0