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usb: atm: Replace in_interrupt() usage in comment

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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>
Signed-off-by: Duncan Sands <duncan.sands@free.fr>
Cc: linux-usb@vger.kernel.org

Link: https://lore.kernel.org/r/20201019101110.944939915@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thomas Gleixner 2020-10-19 12:06:42 +02:00 committed by Greg Kroah-Hartman
parent 862ee699fe
commit 726c8277bc
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/atm/usbatm.c
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@ -249,7 +249,7 @@ static void usbatm_complete(struct urb *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 */