The patch titled
Char: mxser_new, fix recursive locking
has been added to the -mm tree. Its filename is
char-mxser_new-fix-recursive-locking.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Char: mxser_new, fix recursive locking
From: Jan Yenya Kasprzak <kas@xxxxxxxxxx>
Signed-off-by: Jan "Yenya" Kasprzak <kas@xxxxxxxxxx>
Acked-by: Jiri Slaby <jirislaby@xxxxxxxxx>
Acked-by: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/mxser_new.c | 7 +++++++
1 files changed, 7 insertions(+)
diff -puN drivers/char/mxser_new.c~char-mxser_new-fix-recursive-locking drivers/char/mxser_new.c
--- a/drivers/char/mxser_new.c~char-mxser_new-fix-recursive-locking
+++ a/drivers/char/mxser_new.c
@@ -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)
_
Patches currently in -mm which might be from kas@xxxxxxxxxx are
char-mxser_new-fix-recursive-locking.patch
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