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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-24 16:55:23 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-24 16:55:23 -0700 |
commit | 25a0dc4be86fc0d8c7e81bb5f8be8427022bf15f (patch) | |
tree | c8d66d65eb0910a2dc8e00a96c1a4da1fc9e33d4 /drivers/staging/fsl-mc/bus/mc-bus.c | |
parent | 9d0be76f52faff97fd9581eba70870f27061ae93 (diff) | |
parent | 6c71ee3b6157fdbde5c839405b593876d3687eb9 (diff) | |
download | linux-stable-25a0dc4be86fc0d8c7e81bb5f8be8427022bf15f.tar.gz linux-stable-25a0dc4be86fc0d8c7e81bb5f8be8427022bf15f.tar.bz2 linux-stable-25a0dc4be86fc0d8c7e81bb5f8be8427022bf15f.zip |
Merge tag 'staging-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO driver updates from Greg KH:
"Here is the big Staging and IIO driver update for 4.8-rc1.
We ended up adding more code than removing, again, but it's not all
that bad. Lots of cleanups all over the staging tree, and new IIO
drivers, full details in the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (417 commits)
drivers:iio:accel:mma8452: removed unwanted return statements
drivers:iio:accel:mma8452: added cleanup provision in case of failure.
iio: Add iio.git tree to MAINTAINERS
iio:st_pressure: clean useless static channel initializers
iio:st_pressure:lps22hb: temperature support
iio:st_pressure:lps22hb: open drain support
iio:st_pressure: temperature triggered buffering
iio:st_pressure: document sampling gains
iio:st_pressure: align storagebits on power of 2
iio:st_sensors: align on storagebits boundaries
staging:iio:lis3l02dq drop separate driver
iio: accel: st_accel: Add lis3l02dq support
iio: adc: add missing of_node references to iio_dev
iio: adc: ti-ads1015: add indio_dev->dev.of_node reference
iio: potentiometer: Fix typo in Kconfig
iio: potentiometer: mcp4531: Add device tree binding
iio: potentiometer: mcp4531: Add device tree binding documentation
iio: potentiometer: mcp4531: Add support for MCP454x, MCP456x, MCP464x and MCP466x
iio:imu:mpu6050: icm20608 initial support
iio: adc: max1363: Add device tree binding
...
Diffstat (limited to 'drivers/staging/fsl-mc/bus/mc-bus.c')
-rw-r--r-- | drivers/staging/fsl-mc/bus/mc-bus.c | 71 |
1 files changed, 50 insertions, 21 deletions
diff --git a/drivers/staging/fsl-mc/bus/mc-bus.c b/drivers/staging/fsl-mc/bus/mc-bus.c index 405364307561..db3afdbdf4ae 100644 --- a/drivers/staging/fsl-mc/bus/mc-bus.c +++ b/drivers/staging/fsl-mc/bus/mc-bus.c @@ -24,8 +24,6 @@ static struct kmem_cache *mc_dev_cache; -static bool fsl_mc_is_root_dprc(struct device *dev); - /** * fsl_mc_bus_match - device to driver matching callback * @dev: the MC object device structure to match against @@ -36,7 +34,7 @@ static bool fsl_mc_is_root_dprc(struct device *dev); */ static int fsl_mc_bus_match(struct device *dev, struct device_driver *drv) { - const struct fsl_mc_device_match_id *id; + const struct fsl_mc_device_id *id; struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(drv); bool found = false; @@ -78,14 +76,45 @@ out: */ static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { - pr_debug("%s invoked\n", __func__); + struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); + + if (add_uevent_var(env, "MODALIAS=fsl-mc:v%08Xd%s", + mc_dev->obj_desc.vendor, + mc_dev->obj_desc.type)) + return -ENOMEM; + return 0; } +static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); + + return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor, + mc_dev->obj_desc.type); +} +static DEVICE_ATTR_RO(modalias); + +static struct attribute *fsl_mc_dev_attrs[] = { + &dev_attr_modalias.attr, + NULL, +}; + +static const struct attribute_group fsl_mc_dev_group = { + .attrs = fsl_mc_dev_attrs, +}; + +static const struct attribute_group *fsl_mc_dev_groups[] = { + &fsl_mc_dev_group, + NULL, +}; + struct bus_type fsl_mc_bus_type = { .name = "fsl-mc", .match = fsl_mc_bus_match, .uevent = fsl_mc_bus_uevent, + .dev_groups = fsl_mc_dev_groups, }; EXPORT_SYMBOL_GPL(fsl_mc_bus_type); @@ -216,19 +245,6 @@ static void fsl_mc_get_root_dprc(struct device *dev, } } -/** - * fsl_mc_is_root_dprc - function to check if a given device is a root dprc - */ -static bool fsl_mc_is_root_dprc(struct device *dev) -{ - struct device *root_dprc_dev; - - fsl_mc_get_root_dprc(dev, &root_dprc_dev); - if (!root_dprc_dev) - return false; - return dev == root_dprc_dev; -} - static int get_dprc_attr(struct fsl_mc_io *mc_io, int container_id, struct dprc_attributes *attr) { @@ -393,6 +409,19 @@ error_cleanup_regions: } /** + * fsl_mc_is_root_dprc - function to check if a given device is a root dprc + */ +bool fsl_mc_is_root_dprc(struct device *dev) +{ + struct device *root_dprc_dev; + + fsl_mc_get_root_dprc(dev, &root_dprc_dev); + if (!root_dprc_dev) + return false; + return dev == root_dprc_dev; +} + +/** * Add a newly discovered MC object device to be visible in Linux */ int fsl_mc_device_add(struct dprc_obj_desc *obj_desc, @@ -550,10 +579,6 @@ void fsl_mc_device_remove(struct fsl_mc_device *mc_dev) if (strcmp(mc_dev->obj_desc.type, "dprc") == 0) { mc_bus = to_fsl_mc_bus(mc_dev); - if (mc_dev->mc_io) { - fsl_destroy_mc_io(mc_dev->mc_io); - mc_dev->mc_io = NULL; - } if (fsl_mc_is_root_dprc(&mc_dev->dev)) { if (atomic_read(&root_dprc_count) > 0) @@ -781,6 +806,10 @@ static int fsl_mc_bus_remove(struct platform_device *pdev) return -EINVAL; fsl_mc_device_remove(mc->root_mc_bus_dev); + + fsl_destroy_mc_io(mc->root_mc_bus_dev->mc_io); + mc->root_mc_bus_dev->mc_io = NULL; + dev_info(&pdev->dev, "Root MC bus device removed"); return 0; } |