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Message-Id: <20201019101110.944939915@linutronix.de>
Date:   Mon, 19 Oct 2020 12:06:42 +0200
From:   Thomas Gleixner <tglx@linutronix.de>
To:     LKML <linux-kernel@vger.kernel.org>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        "Ahmed S. Darwish" <a.darwish@linutronix.de>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Duncan Sands <duncan.sands@free.fr>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-usb@vger.kernel.org,
        Thomas Winischhofer <thomas@winischhofer.net>,
        Johan Hovold <johan@kernel.org>,
        Mathias Nyman <mathias.nyman@intel.com>,
        Valentina Manea <valentina.manea.m@gmail.com>,
        Shuah Khan <shuah@kernel.org>,
        Alan Stern <stern@rowland.harvard.edu>,
        linux-omap@vger.kernel.org, Kukjin Kim <kgene@kernel.org>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        linux-arm-kernel@lists.infradead.org,
        linux-samsung-soc@vger.kernel.org, Felipe Balbi <balbi@kernel.org>
Subject: [patch V2 13/13] usb: atm: Replace in_interrupt() usage in comment
References: <20201019100629.419020859@linutronix.de>
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Precedence: bulk

in_interrupt() is a pretty vague context description as it means: hard
interrupt, soft interrupt or bottom half disabled regions.

Replace the vague comment with a proper reasoning why spin_lock_irqsave()
needs to be used.

Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Duncan Sands <duncan.sands@free.fr>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org

---
 drivers/usb/atm/usbatm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -249,7 +249,7 @@ static void usbatm_complete(struct urb *
 	/* vdbg("%s: urb 0x%p, status %d, actual_length %d",
 	     __func__, urb, status, urb->actual_length); */
 
-	/* usually in_interrupt(), but not always */
+	/* Can be invoked from task context, protect against interrupts */
 	spin_lock_irqsave(&channel->lock, flags);
 
 	/* must add to the back when receiving; doesn't matter when sending */