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authorCornelia Huck <cornelia.huck@de.ibm.com>2007-02-12 15:47:18 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-02-12 15:47:18 +0100
commit4dd3cc5caf41d55cd5e55f32902c8a2ad3296e19 (patch)
tree458be42776f00233f99fa270b8f249f6a1c95c5c /include/asm-s390
parent0ec67667ab414b18a0518d5b11c842fd342e9cb1 (diff)
[S390] cio: Fixup interface for setting options on ccw devices.
The current ccw_device_set_options() sets a specified mask of options and clears those not specified, but there is no way to find out which options have already been set. In order to fix this up, introduce the following interface changes: ccw_device_set_options() now only sets the specified bits, but does not clear those that are not specified. ccw_device_clear_options() clears the specified bits. ccw_device_set_options_mask() provides the old semantics (setting only the specified bits and clearing the others). Device drivers now work as expected. qdio has been adapted. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390')
-rw-r--r--include/asm-s390/ccwdev.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-s390/ccwdev.h b/include/asm-s390/ccwdev.h
index 58c70acffc7..cfc81533b9b 100644
--- a/include/asm-s390/ccwdev.h
+++ b/include/asm-s390/ccwdev.h
@@ -110,7 +110,9 @@ extern void ccw_driver_unregister (struct ccw_driver *driver);
struct ccw1;
+extern int ccw_device_set_options_mask(struct ccw_device *, unsigned long);
extern int ccw_device_set_options(struct ccw_device *, unsigned long);
+extern void ccw_device_clear_options(struct ccw_device *, unsigned long);
/* Allow for i/o completion notification after primary interrupt status. */
#define CCWDEV_EARLY_NOTIFICATION 0x0001