Merge tag 'v3.7-rc1' into staging/for_v3.8

Linux 3.7-rc1

* tag 'v3.7-rc1': (9579 commits)
  Linux 3.7-rc1
  x86, boot: Explicitly include autoconf.h for hostprogs
  perf: Fix UAPI fallout
  ARM: config: make sure that platforms are ordered by option string
  ARM: config: sort select statements alphanumerically
  UAPI: (Scripted) Disintegrate include/linux/byteorder
  UAPI: (Scripted) Disintegrate include/linux
  UAPI: Unexport linux/blk_types.h
  UAPI: Unexport part of linux/ppp-comp.h
  perf: Handle new rbtree implementation
  procfs: don't need a PATH_MAX allocation to hold a string representation of an int
  vfs: embed struct filename inside of names_cache allocation if possible
  audit: make audit_inode take struct filename
  vfs: make path_openat take a struct filename pointer
  vfs: turn do_path_lookup into wrapper around struct filename variant
  audit: allow audit code to satisfy getname requests from its names_list
  vfs: define struct filename and have getname() return it
  btrfs: Fix compilation with user namespace support enabled
  userns: Fix posix_acl_file_xattr_userns gid conversion
  userns: Properly print bluetooth socket uids
  ...

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c
index 5847a4b855f..9033fc6e0e4 100644
--- a/drivers/tty/serial/pxa.c
+++ b/drivers/tty/serial/pxa.c
@@ -670,9 +670,19 @@ serial_pxa_console_write(struct console *co, const char *s, unsigned int count)
 {
 	struct uart_pxa_port *up = serial_pxa_ports[co->index];
 	unsigned int ier;
+	unsigned long flags;
+	int locked = 1;
 
 	clk_prepare_enable(up->clk);
 
+	local_irq_save(flags);
+	if (up->port.sysrq)
+		locked = 0;
+	else if (oops_in_progress)
+		locked = spin_trylock(&up->port.lock);
+	else
+		spin_lock(&up->port.lock);
+
 	/*
 	 *	First save the IER then disable the interrupts
 	 */
@@ -688,6 +698,10 @@ serial_pxa_console_write(struct console *co, const char *s, unsigned int count)
 	wait_for_xmitr(up);
 	serial_out(up, UART_IER, ier);
 
+	if (locked)
+		spin_unlock(&up->port.lock);
+	local_irq_restore(flags);
+
 	clk_disable_unprepare(up->clk);
 }