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authorTakashi Iwai <tiwai@suse.de>2015-11-27 13:40:20 +0100
committerTakashi Iwai <tiwai@suse.de>2015-11-27 13:40:20 +0100
commit06a691e64b11323a735db3c3bd909d3c0712698f (patch)
treee60b5a230fc2ea6e0f514d878d322a1f8e101c57 /kernel/panic.c
parentALSA: hda - Fix noise on Gigabyte Z170X mobo (diff)
parentMerge remote-tracking branches 'asoc/fix/rt5677', 'asoc/fix/st', 'asoc/fix/sun4i-codec', 'asoc/fix/topology', 'asoc/fix/wm8960' and 'asoc/fix/wm8962' into asoc-linus (diff)
downloadwireguard-linux-06a691e64b11323a735db3c3bd909d3c0712698f.tar.xz
wireguard-linux-06a691e64b11323a735db3c3bd909d3c0712698f.zip
Merge tag 'asoc-fix-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.4 Quite a large batch of fixes have come in since the merge window, mainly driver specific ones but there's a couple of core ones: - A fix for DAPM resume on active streams to ensure everything ends up cleanly in the right state. - Reset the DAPM cache when freeing widgets to fix a crash on driver remove and reload. The PM functions for nau8825 are new code which fix crashes on resume.
Diffstat (limited to 'kernel/panic.c')
-rw-r--r--kernel/panic.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/panic.c b/kernel/panic.c
index 04e91ff7560b..4b150bc0c6c1 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -23,6 +23,7 @@
#include <linux/sysrq.h>
#include <linux/init.h>
#include <linux/nmi.h>
+#include <linux/console.h>
#define PANIC_TIMER_STEP 100
#define PANIC_BLINK_SPD 18
@@ -147,6 +148,18 @@ void panic(const char *fmt, ...)
bust_spinlocks(0);
+ /*
+ * We may have ended up stopping the CPU holding the lock (in
+ * smp_send_stop()) while still having some valuable data in the console
+ * buffer. Try to acquire the lock then release it regardless of the
+ * result. The release will also print the buffers out. Locks debug
+ * should be disabled to avoid reporting bad unlock balance when
+ * panic() is not being callled from OOPS.
+ */
+ debug_locks_off();
+ console_trylock();
+ console_unlock();
+
if (!panic_blink)
panic_blink = no_blink;