Revert "drivers/tty: Explicitly pass current to show_stack"

This reverts commit 9f12cea96f47f98d612a0a0b84f950a0163731bf.

Mark writes:
	Unfortunately, this patch will result in erroneous stack traces
	on some architectures. Sorry about this; I should have verified
	this more thoroughly before sending the series out.

	Please drop the patch at your earliest convenience.

Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 5b1e0edacb84d79cd199a226b827521732014bd6..52bbd27e93ae7a83af92489b6d27fe0309437afe 100644 (file)
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -224,7 +224,7 @@ static void showacpu(void *dummy)
 
        spin_lock_irqsave(&show_lock, flags);
        pr_info("CPU%d:\n", smp_processor_id());
-       show_stack(current, NULL);
+       show_stack(NULL, NULL);
        spin_unlock_irqrestore(&show_lock, flags);
 }