diff options
Diffstat (limited to 'core/udev/0002-reinstate-TIMEOUT-handling.patch')
-rw-r--r-- | core/udev/0002-reinstate-TIMEOUT-handling.patch | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/core/udev/0002-reinstate-TIMEOUT-handling.patch b/core/udev/0002-reinstate-TIMEOUT-handling.patch new file mode 100644 index 000000000..9d1d36fb6 --- /dev/null +++ b/core/udev/0002-reinstate-TIMEOUT-handling.patch @@ -0,0 +1,146 @@ +From 0a581062ee3e31e0c2aedc5eb64c60f52868b17f Mon Sep 17 00:00:00 2001 +From: Tom Gundersen <teg@jklm.no> +Date: Thu, 15 Mar 2012 02:12:43 +0100 +Subject: [PATCH 2/2] reinstate TIMEOUT= handling + +Without treating events with timeouts specially some drivers would cause a +30 seconds stall on boot: . + +I also received reports of some drivers not working at all, even after the +timeout. + +We will remove this patch when more drivers have been fixed in the kernel (3.4?). + +This reverts 43d5c5f03645c4b842659f9b5bd0ae465e885e92 and +57c6f8ae5f52a6e8ffc66a54966346f733dded39. +--- + TODO | 2 ++ + src/libudev-device.c | 19 +++++++++++++++++++ + src/libudev-private.h | 1 + + src/udevd.c | 13 ++++++++++--- + 4 files changed, 32 insertions(+), 3 deletions(-) + +diff --git a/TODO b/TODO +index 36e8440..c2e59b6 100644 +--- a/TODO ++++ b/TODO +@@ -1,6 +1,8 @@ + - find a way to tell udev to not cancel firmware + requests in initramfs + ++ - remove TIMEOUT= handling ++ + - move /lib/udev/devices/ to tmpfiles + + - trigger --subsystem-match=usb/usb_device +diff --git a/src/libudev-device.c b/src/libudev-device.c +index 10f28b8..639c367 100644 +--- a/src/libudev-device.c ++++ b/src/libudev-device.c +@@ -68,6 +68,7 @@ struct udev_device { + struct udev_list tags_list; + unsigned long long int seqnum; + unsigned long long int usec_initialized; ++ int timeout; + int devlink_priority; + int refcount; + dev_t devnum; +@@ -160,6 +161,21 @@ static int udev_device_set_devnum(struct udev_device *udev_device, dev_t devnum) + return 0; + } + ++int udev_device_get_timeout(struct udev_device *udev_device) ++{ ++ return udev_device->timeout; ++} ++ ++static int udev_device_set_timeout(struct udev_device *udev_device, int timeout) ++{ ++ char num[32]; ++ ++ udev_device->timeout = timeout; ++ snprintf(num, sizeof(num), "%u", timeout); ++ udev_device_add_property(udev_device, "TIMEOUT", num); ++ return 0; ++} ++ + const char *udev_device_get_devpath_old(struct udev_device *udev_device) + { + return udev_device->devpath_old; +@@ -414,6 +430,8 @@ void udev_device_add_property_from_string_parse(struct udev_device *udev_device, + udev_device_set_devpath_old(udev_device, &property[12]); + } else if (strncmp(property, "SEQNUM=", 7) == 0) { + udev_device_set_seqnum(udev_device, strtoull(&property[7], NULL, 10)); ++ } else if (strncmp(property, "TIMEOUT=", 8) == 0) { ++ udev_device_set_timeout(udev_device, strtoull(&property[8], NULL, 10)); + } else if (strncmp(property, "IFINDEX=", 8) == 0) { + udev_device_set_ifindex(udev_device, strtoull(&property[8], NULL, 10)); + } else if (strncmp(property, "DEVMODE=", 8) == 0) { +@@ -599,6 +617,7 @@ struct udev_device *udev_device_new(struct udev *udev) + udev_list_init(udev, &udev_device->sysattr_value_list, true); + udev_list_init(udev, &udev_device->sysattr_list, false); + udev_list_init(udev, &udev_device->tags_list, true); ++ udev_device->timeout = -1; + udev_device->watch_handle = -1; + /* copy global properties */ + udev_list_entry_foreach(list_entry, udev_get_properties_list_entry(udev)) +diff --git a/src/libudev-private.h b/src/libudev-private.h +index 5f5c64a..ec63b67 100644 +--- a/src/libudev-private.h ++++ b/src/libudev-private.h +@@ -87,6 +87,7 @@ const char *udev_device_get_id_filename(struct udev_device *udev_device); + void udev_device_set_is_initialized(struct udev_device *udev_device); + int udev_device_add_tag(struct udev_device *udev_device, const char *tag); + void udev_device_cleanup_tags_list(struct udev_device *udev_device); ++int udev_device_get_timeout(struct udev_device *udev_device); + unsigned long long udev_device_get_usec_initialized(struct udev_device *udev_device); + void udev_device_set_usec_initialized(struct udev_device *udev_device, unsigned long long usec_initialized); + int udev_device_get_devlink_priority(struct udev_device *udev_device); +diff --git a/src/udevd.c b/src/udevd.c +index 1702217..88e9272 100644 +--- a/src/udevd.c ++++ b/src/udevd.c +@@ -401,7 +401,7 @@ out: + } + } + +-static void event_run(struct event *event) ++static void event_run(struct event *event, bool force) + { + struct udev_list_node *loop; + +@@ -427,7 +427,7 @@ static void event_run(struct event *event) + return; + } + +- if (children >= children_max) { ++ if (!force && children >= children_max) { + if (children_max > 1) + info(event->udev, "maximum number (%i) of children reached\n", children); + return; +@@ -461,6 +461,13 @@ static int event_queue_insert(struct udev_device *dev) + + event->state = EVENT_QUEUED; + udev_list_node_append(&event->node, &event_list); ++ ++ /* run all events with a timeout set immediately */ ++ if (udev_device_get_timeout(dev) > 0) { ++ event_run(event, true); ++ return 0; ++ } ++ + return 0; + } + +@@ -577,7 +584,7 @@ static void event_queue_start(struct udev *udev) + continue; + } + +- event_run(event); ++ event_run(event, false); + } + } + +-- +1.7.9.5 + |