diff options
author | Nipun Gupta <nipun.gupta@nxp.com> | 2016-06-29 22:44:39 +0530 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-21 18:32:26 +0200 |
commit | df5e9b5fbc4e68a0f0345fbc0f65e60d7440279f (patch) | |
tree | feb9cdbe6b3292d4600ebddac111d6e7ec3d75cd /drivers/staging/fsl-mc | |
parent | 243d38aab204bfd1c33ad6f412b654c9f7eed8cb (diff) |
fsl-mc: add helper macro to determine if a device is of fsl_mc type
Add a helper macro to return if a device has a bus type of fsl_mc.
This makes the bus driver code more readable and provides a way for
drivers like the SMMU driver to easily check the bus type.
Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
Signed-off-by: Bharat Bhushan <bharat.bhushan@nxp.com>
Acked-by: Stuart Yoder <stuart.yoder@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/fsl-mc')
-rw-r--r-- | drivers/staging/fsl-mc/bus/dprc-driver.c | 4 | ||||
-rw-r--r-- | drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c | 2 | ||||
-rw-r--r-- | drivers/staging/fsl-mc/bus/mc-allocator.c | 6 | ||||
-rw-r--r-- | drivers/staging/fsl-mc/bus/mc-bus.c | 6 | ||||
-rw-r--r-- | drivers/staging/fsl-mc/include/mc.h | 7 |
5 files changed, 16 insertions, 9 deletions
diff --git a/drivers/staging/fsl-mc/bus/dprc-driver.c b/drivers/staging/fsl-mc/bus/dprc-driver.c index d2a71f14bf72..0523ba8a1965 100644 --- a/drivers/staging/fsl-mc/bus/dprc-driver.c +++ b/drivers/staging/fsl-mc/bus/dprc-driver.c @@ -649,7 +649,7 @@ static int dprc_probe(struct fsl_mc_device *mc_dev) /* * This is a child DPRC: */ - if (WARN_ON(parent_dev->bus != &fsl_mc_bus_type)) + if (WARN_ON(!dev_is_fsl_mc(parent_dev))) return -EINVAL; if (WARN_ON(mc_dev->obj_desc.region_count == 0)) @@ -681,7 +681,7 @@ static int dprc_probe(struct fsl_mc_device *mc_dev) */ struct irq_domain *mc_msi_domain; - if (WARN_ON(parent_dev->bus == &fsl_mc_bus_type)) + if (WARN_ON(dev_is_fsl_mc(parent_dev))) return -EINVAL; error = fsl_mc_find_msi_domain(parent_dev, diff --git a/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c b/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c index 720e2b018d00..d0c20d669309 100644 --- a/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c +++ b/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c @@ -35,7 +35,7 @@ static int its_fsl_mc_msi_prepare(struct irq_domain *msi_domain, struct fsl_mc_device *mc_bus_dev; struct msi_domain_info *msi_info; - if (WARN_ON(dev->bus != &fsl_mc_bus_type)) + if (WARN_ON(!dev_is_fsl_mc(dev))) return -EINVAL; mc_bus_dev = to_fsl_mc_device(dev); diff --git a/drivers/staging/fsl-mc/bus/mc-allocator.c b/drivers/staging/fsl-mc/bus/mc-allocator.c index e59d85060c7b..0f50a07fe10c 100644 --- a/drivers/staging/fsl-mc/bus/mc-allocator.c +++ b/drivers/staging/fsl-mc/bus/mc-allocator.c @@ -281,7 +281,7 @@ int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev, if (mc_dev->flags & FSL_MC_IS_DPRC) { mc_bus_dev = mc_dev; } else { - if (WARN_ON(mc_dev->dev.parent->bus != &fsl_mc_bus_type)) + if (WARN_ON(!dev_is_fsl_mc(mc_dev->dev.parent))) return error; mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent); @@ -420,7 +420,7 @@ int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev, if (WARN_ON(mc_dev->flags & FSL_MC_IS_DPRC)) goto error; - if (WARN_ON(mc_dev->dev.parent->bus != &fsl_mc_bus_type)) + if (WARN_ON(!dev_is_fsl_mc(mc_dev->dev.parent))) goto error; if (WARN_ON(pool_type == FSL_MC_POOL_DPMCP)) @@ -678,7 +678,7 @@ static int fsl_mc_allocator_probe(struct fsl_mc_device *mc_dev) return -EINVAL; mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent); - if (WARN_ON(mc_bus_dev->dev.bus != &fsl_mc_bus_type)) + if (WARN_ON(!dev_is_fsl_mc(&mc_bus_dev->dev))) return -EINVAL; mc_bus = to_fsl_mc_bus(mc_bus_dev); diff --git a/drivers/staging/fsl-mc/bus/mc-bus.c b/drivers/staging/fsl-mc/bus/mc-bus.c index db3afdbdf4ae..b54900565acb 100644 --- a/drivers/staging/fsl-mc/bus/mc-bus.c +++ b/drivers/staging/fsl-mc/bus/mc-bus.c @@ -236,11 +236,11 @@ static void fsl_mc_get_root_dprc(struct device *dev, { if (WARN_ON(!dev)) { *root_dprc_dev = NULL; - } else if (WARN_ON(dev->bus != &fsl_mc_bus_type)) { + } else if (WARN_ON(!dev_is_fsl_mc(dev))) { *root_dprc_dev = NULL; } else { *root_dprc_dev = dev; - while ((*root_dprc_dev)->parent->bus == &fsl_mc_bus_type) + while (dev_is_fsl_mc((*root_dprc_dev)->parent)) *root_dprc_dev = (*root_dprc_dev)->parent; } } @@ -434,7 +434,7 @@ int fsl_mc_device_add(struct dprc_obj_desc *obj_desc, struct fsl_mc_bus *mc_bus = NULL; struct fsl_mc_device *parent_mc_dev; - if (parent_dev->bus == &fsl_mc_bus_type) + if (dev_is_fsl_mc(parent_dev)) parent_mc_dev = to_fsl_mc_device(parent_dev); else parent_mc_dev = NULL; diff --git a/drivers/staging/fsl-mc/include/mc.h b/drivers/staging/fsl-mc/include/mc.h index 853cbf38a400..2d6753532c96 100644 --- a/drivers/staging/fsl-mc/include/mc.h +++ b/drivers/staging/fsl-mc/include/mc.h @@ -166,6 +166,13 @@ struct fsl_mc_device { #define to_fsl_mc_device(_dev) \ container_of(_dev, struct fsl_mc_device, dev) +#ifdef CONFIG_FSL_MC_BUS +#define dev_is_fsl_mc(_dev) ((_dev)->bus == &fsl_mc_bus_type) +#else +/* If fsl-mc bus is not present device cannot belong to fsl-mc bus */ +#define dev_is_fsl_mc(_dev) (0) +#endif + /* * module_fsl_mc_driver() - Helper macro for drivers that don't do * anything special in module init/exit. This eliminates a lot of |