diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0133-bus-fsl-mc-add-bus-rescan-attribute.patch')
-rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0133-bus-fsl-mc-add-bus-rescan-attribute.patch | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0133-bus-fsl-mc-add-bus-rescan-attribute.patch b/target/linux/layerscape/patches-5.4/701-net-0133-bus-fsl-mc-add-bus-rescan-attribute.patch deleted file mode 100644 index ea22ddb3fc..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0133-bus-fsl-mc-add-bus-rescan-attribute.patch +++ /dev/null @@ -1,115 +0,0 @@ -From 4eba1e0209a52798e1b6a233840a28fc5132cd9c Mon Sep 17 00:00:00 2001 -From: Ioana Ciornei <ioana.ciornei@nxp.com> -Date: Mon, 5 Mar 2018 18:38:46 +0200 -Subject: [PATCH] bus: fsl-mc: add bus rescan attribute - -Introduce the rescan attribute as a bus attribute to -synchronize the fsl-mc bus objects and the MC firmware. - -To rescan the fsl-mc bus, e.g., -echo 1 > /sys/bus/fsl-mc/rescan - -Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> ---- - Documentation/ABI/stable/sysfs-bus-fsl-mc | 10 ++++++++ - drivers/bus/fsl-mc/dprc-driver.c | 4 +-- - drivers/bus/fsl-mc/fsl-mc-bus.c | 41 +++++++++++++++++++++++++++++++ - drivers/bus/fsl-mc/fsl-mc-private.h | 2 ++ - 4 files changed, 55 insertions(+), 2 deletions(-) - ---- a/Documentation/ABI/stable/sysfs-bus-fsl-mc -+++ b/Documentation/ABI/stable/sysfs-bus-fsl-mc -@@ -7,3 +7,13 @@ Description: Writing a non-zero value to - synchronize the objects under dprc.X and the - Management Complex firmware. - Users: Userspace drivers and management tools -+ -+What: /sys/bus/fsl-mc/rescan -+Date: November 2018 -+KernelVersion: 5.0 -+Contact: Ioana Ciornei <ioana.ciornei@nxp.com> -+Description: Writing a non-zero value to this attribute will -+ force a rescan of fsl-mc bus in the system and -+ synchronize the objects under fsl-mc bus and the -+ Management Complex firmware. -+Users: Userspace drivers and management tools ---- a/drivers/bus/fsl-mc/dprc-driver.c -+++ b/drivers/bus/fsl-mc/dprc-driver.c -@@ -214,8 +214,8 @@ static void dprc_add_new_devices(struct - * populated before they can get allocation requests from probe callbacks - * of the device drivers for the non-allocatable devices. - */ --static int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev, -- unsigned int *total_irq_count) -+int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev, -+ unsigned int *total_irq_count) - { - int num_child_objects; - int dprc_get_obj_failures; ---- a/drivers/bus/fsl-mc/fsl-mc-bus.c -+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c -@@ -154,12 +154,53 @@ static struct attribute *fsl_mc_dev_attr - - ATTRIBUTE_GROUPS(fsl_mc_dev); - -+static int scan_fsl_mc_bus(struct device *dev, void *data) -+{ -+ struct fsl_mc_device *root_mc_dev; -+ struct fsl_mc_bus *root_mc_bus; -+ -+ if (!fsl_mc_is_root_dprc(dev)) -+ goto exit; -+ -+ root_mc_dev = to_fsl_mc_device(dev); -+ root_mc_bus = to_fsl_mc_bus(root_mc_dev); -+ mutex_lock(&root_mc_bus->scan_mutex); -+ dprc_scan_objects(root_mc_dev, NULL); -+ mutex_unlock(&root_mc_bus->scan_mutex); -+ -+exit: -+ return 0; -+} -+ -+static ssize_t rescan_store(struct bus_type *bus, -+ const char *buf, size_t count) -+{ -+ unsigned long val; -+ -+ if (kstrtoul(buf, 0, &val) < 0) -+ return -EINVAL; -+ -+ if (val) -+ bus_for_each_dev(bus, NULL, NULL, scan_fsl_mc_bus); -+ -+ return count; -+} -+static BUS_ATTR_WO(rescan); -+ -+static struct attribute *fsl_mc_bus_attrs[] = { -+ &bus_attr_rescan.attr, -+ NULL, -+}; -+ -+ATTRIBUTE_GROUPS(fsl_mc_bus); -+ - struct bus_type fsl_mc_bus_type = { - .name = "fsl-mc", - .match = fsl_mc_bus_match, - .uevent = fsl_mc_bus_uevent, - .dma_configure = fsl_mc_dma_configure, - .dev_groups = fsl_mc_dev_groups, -+ .bus_groups = fsl_mc_bus_groups, - }; - EXPORT_SYMBOL_GPL(fsl_mc_bus_type); - ---- a/drivers/bus/fsl-mc/fsl-mc-private.h -+++ b/drivers/bus/fsl-mc/fsl-mc-private.h -@@ -556,6 +556,8 @@ int __init dprc_driver_init(void); - - void dprc_driver_exit(void); - -+int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev, -+ unsigned int *total_irq_count); - int __init fsl_mc_allocator_driver_init(void); - - void fsl_mc_allocator_driver_exit(void); |