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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2011-03-15 19:08:26 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-03-15 19:08:23 +0300 |
| commit | 97eb6bfcb942a59f5c8d273523d68c6a0f57a6f2 (patch) | |
| tree | 44cd256317b24d94f0affa848167ac6b26707afb /drivers/s390/cio/io_sch.h | |
| parent | c513d07a2df0f7076c1707274e29737f09df3b7f (diff) | |
| download | linux-97eb6bfcb942a59f5c8d273523d68c6a0f57a6f2.tar.xz | |
[S390] cio: move cdev pointer to io_subchannel_private
Move the subchannels ccw device pointer from drv_data to
the private data for I/O subchannels, since it is not the
only drv_data for I/O subchannels. The next step will be
to make io_subchannel_private the new drv_data for I/O
subchannels.
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/io_sch.h')
| -rw-r--r-- | drivers/s390/cio/io_sch.h | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h index 8271a1f9860c..23f50ba50392 100644 --- a/drivers/s390/cio/io_sch.h +++ b/drivers/s390/cio/io_sch.h @@ -10,6 +10,7 @@ struct io_subchannel_private { union orb orb; /* operation request block */ struct ccw1 sense_ccw; /* static ccw for sense command */ + struct ccw_device *cdev;/* pointer to the child ccw device */ struct { unsigned int suspend:1; /* allow suspend */ unsigned int prefetch:1;/* deny prefetch */ @@ -18,8 +19,20 @@ struct io_subchannel_private { } __aligned(8); #define to_io_private(n) ((struct io_subchannel_private *)n->private) -#define sch_get_cdev(n) (dev_get_drvdata(&n->dev)) -#define sch_set_cdev(n, c) (dev_set_drvdata(&n->dev, c)) + +static inline struct ccw_device *sch_get_cdev(struct subchannel *sch) +{ + struct io_subchannel_private *priv = to_io_private(sch); + return priv ? priv->cdev : NULL; +} + +static inline void sch_set_cdev(struct subchannel *sch, + struct ccw_device *cdev) +{ + struct io_subchannel_private *priv = to_io_private(sch); + if (priv) + priv->cdev = cdev; +} #define MAX_CIWS 8 |