04-26-2009
It's probably that (int). You can't assign to something that's been typecast.
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LEARN ABOUT SUNOS
ddi_intr_set_pri
ddi_intr_get_pri(9F) ddi_intr_get_pri(9F)
NAME
ddi_intr_get_pri, ddi_intr_set_pri - get or set priority of a given interrupt
SYNOPSIS
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
int ddi_intr_get_pri(ddi_intr_handle_t h, int *prip);
int ddi_intr_set_pri(ddi_intr_handle_t h, int pri);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
ddi_intr_get_pri()
h DDI interrupt handle
prip Pointer to the priority returned for this handle
ddi_intr_set_pri()
h DDI interrupt handle
pri Contains the priority to be set
The ddi_intr_get_pri() function returns the current priority of the interrupt handle h of a given device. Upon a successful return, prip
points to a small integer value, typically in the DDI_INTR_PRI_MIN...DDI_INTR_PRI_MAX range, that represents the current software priority
setting for the interrupt. See <sys/ddi_intr.h> for values of DDI_INTR_PRI_MIN or DDI_INTR_PRI_MAX.
The ddi_intr_get_pri() function can be called any time, even if the driver adds an interrupt handler for the interrupt specification.
The software priority returned from ddi_intr_get_pri() can be used in calls to mutex_init() and rw_init().
The ddi_intr_set_pri() function sets the priority pri of the interrupt handle h of a given device. The function validates that the argument
is within the supported range.
The ddi_intr_set_pri() function can only be called prior to adding the interrupt handler or when an interrupt handler is unassigned.
DDI_FAILURE is returned in all other cases.
The ddi_intr_get_pri() and ddi_intr_set_pri() functions return:
DDI_SUCCESS On success.
DDI_EINVAL On encountering invalid input parameters.
DDI_FAILURE On any implementation specific failure.
DDI_ENOTSUP On device not supporting operation.
CONTEXT
The ddi_intr_get_pri() and ddi_intr_set_pri() functions can be called from kernel non-interrupt context.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
attributes(5), ddi_intr_alloc(9F), ddi_intr_enable(9F), mutex_init(9F), rw_init(9F)
The priority returned from ddi_intr_get_pri() should be typecast to (void *)(uint64_t) before passing it on to mutex_init(9F). The double
typecast is needed for AMD64 compilation.
Consumers of these interfaces should verify that the return value is not equal to DDI_SUCCESS. Incomplete checking for failure codes could
result in inconsistent behavior among platforms.
20 Apr 2005 ddi_intr_get_pri(9F)