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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-21 15:50:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-21 15:50:49 -0700 |
| commit | 9a64388d83f6ef08dfff405a9d122e3dbcb6bf38 (patch) | |
| tree | a77532ce4d6d56be6c6c7f405cd901a0184250fb /drivers/of/base.c | |
| parent | e80ab411e589e00550e2e6e5a6a02d59cc730357 (diff) | |
| parent | 14b3ca4022f050f8622ed282b734ddf445464583 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (202 commits)
[POWERPC] Fix compile breakage for 64-bit UP configs
[POWERPC] Define copy_siginfo_from_user32
[POWERPC] Add compat handler for PTRACE_GETSIGINFO
[POWERPC] i2c: Fix build breakage introduced by OF helpers
[POWERPC] Optimize fls64() on 64-bit processors
[POWERPC] irqtrace support for 64-bit powerpc
[POWERPC] Stacktrace support for lockdep
[POWERPC] Move stackframe definitions to common header
[POWERPC] Fix device-tree locking vs. interrupts
[POWERPC] Make pci_bus_to_host()'s struct pci_bus * argument const
[POWERPC] Remove unused __max_memory variable
[POWERPC] Simplify xics direct/lpar irq_host setup
[POWERPC] Use pseries_setup_i8259_cascade() in pseries_mpic_init_IRQ()
[POWERPC] Turn xics_setup_8259_cascade() into a generic pseries_setup_i8259_cascade()
[POWERPC] Move xics_setup_8259_cascade() into platforms/pseries/setup.c
[POWERPC] Use asm-generic/bitops/find.h in bitops.h
[POWERPC] 83xx: mpc8315 - fix USB UTMI Host setup
[POWERPC] 85xx: Fix the size of qe muram for MPC8568E
[POWERPC] 86xx: mpc86xx_hpcn - Temporarily accept old dts node identifier.
[POWERPC] 86xx: mark functions static, other minor cleanups
...
Diffstat (limited to 'drivers/of/base.c')
| -rw-r--r-- | drivers/of/base.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index 80c9deca5f3..9bd7c4a3125 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -117,6 +117,32 @@ int of_device_is_compatible(const struct device_node *device, EXPORT_SYMBOL(of_device_is_compatible); /** + * of_device_is_available - check if a device is available for use + * + * @device: Node to check for availability + * + * Returns 1 if the status property is absent or set to "okay" or "ok", + * 0 otherwise + */ +int of_device_is_available(const struct device_node *device) +{ + const char *status; + int statlen; + + status = of_get_property(device, "status", &statlen); + if (status == NULL) + return 1; + + if (statlen > 0) { + if (!strcmp(status, "okay") || !strcmp(status, "ok")) + return 1; + } + + return 0; +} +EXPORT_SYMBOL(of_device_is_available); + +/** * of_get_parent - Get a node's parent if any * @node: Node to get parent * |