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Commit 67d2bc58 authored by Jan Yenya Kasprzak's avatar Jan Yenya Kasprzak Committed by Linus Torvalds
Browse files

Char: mxser_new, fix recursive locking 



Signed-off-by: default avatarJan "Yenya" Kasprzak <kas@fi.muni.cz>
Acked-by: default avatarJiri Slaby <jirislaby@gmail.com>
Acked-by: default avatarAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 3d124cbb

drivers/char/mxser_new.c

+7 −0
Original line number Diff line number Diff line
@@ -2230,7 +2230,14 @@ end_intr: 
	port->mon_data.rxcnt += cnt;

	port->mon_data.up_rxcnt += cnt;



	/*

	 * We are called from an interrupt context with &port->slock

	 * being held. Drop it temporarily in order to prevent

	 * recursive locking.

	 */

	spin_unlock(&port->slock);

	tty_flip_buffer_push(tty);

	spin_lock(&port->slock);

}



static void mxser_transmit_chars(struct mxser_port *port)