diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2010-10-25 16:10:27 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-10-25 16:10:18 +0200 |
| commit | b730f3a933958362ee1080c257f2cc158149310a (patch) | |
| tree | a86a6f49209447fafa866f846ed5258690892b79 /drivers/s390/cio/chp.h | |
| parent | 74b6127e6c35abf06364468636dd261850639f8b (diff) | |
| download | blackbird-op-linux-b730f3a933958362ee1080c257f2cc158149310a.tar.gz blackbird-op-linux-b730f3a933958362ee1080c257f2cc158149310a.zip | |
[S390] cio: add lock to struct channel_path
Serialize access to members of struct channel_path with a mutex.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/chp.h')
| -rw-r--r-- | drivers/s390/cio/chp.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/s390/cio/chp.h b/drivers/s390/cio/chp.h index 26c3d2246176..695ec20f1c59 100644 --- a/drivers/s390/cio/chp.h +++ b/drivers/s390/cio/chp.h @@ -1,7 +1,7 @@ /* * drivers/s390/cio/chp.h * - * Copyright IBM Corp. 2007 + * Copyright IBM Corp. 2007,2010 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> */ @@ -10,6 +10,7 @@ #include <linux/types.h> #include <linux/device.h> +#include <linux/mutex.h> #include <asm/chpid.h> #include "chsc.h" #include "css.h" @@ -40,14 +41,15 @@ static inline int chp_test_bit(u8 *bitmap, int num) struct channel_path { + struct device dev; struct chp_id chpid; + struct mutex lock; /* Serialize access to below members. */ int state; struct channel_path_desc desc; /* Channel-measurement related stuff: */ int cmg; int shared; void *cmg_chars; - struct device dev; }; int chp_get_status(struct chp_id chpid); |
