Linux v3.11-rc3-288-gabe0308
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Josh Boyer
parent
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commit
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@ -1,172 +0,0 @@
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From c63e0e370028d7e4033bd40165f18499872b5183 Mon Sep 17 00:00:00 2001
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From: Nestor Lopez Casado <nlopezcasad@logitech.com>
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Date: Thu, 18 Jul 2013 13:21:30 +0000
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Subject: HID: Revert "Revert "HID: Fix logitech-dj: missing Unifying device issue""
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This reverts commit 8af6c08830b1ae114d1a8b548b1f8b056e068887.
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This patch re-adds the workaround introduced by 596264082f10dd4
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which was reverted by 8af6c08830b1ae114.
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The original patch 596264 was needed to overcome a situation where
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the hid-core would drop incoming reports while probe() was being
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executed.
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This issue was solved by c849a6143bec520af which added
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hid_device_io_start() and hid_device_io_stop() that enable a specific
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hid driver to opt-in for input reports while its probe() is being
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executed.
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Commit a9dd22b730857347 modified hid-logitech-dj so as to use the
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functionality added to hid-core. Having done that, workaround 596264
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was no longer necessary and was reverted by 8af6c08.
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We now encounter a different problem that ends up 'again' thwarting
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the Unifying receiver enumeration. The problem is time and usb controller
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dependent. Ocasionally the reports sent to the usb receiver to start
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the paired devices enumeration fail with -EPIPE and the receiver never
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gets to enumerate the paired devices.
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With dcd9006b1b053c7b1c the problem was "hidden" as the call to the usb
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driver became asynchronous and none was catching the error from the
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failing URB.
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As the root cause for this failing SET_REPORT is not understood yet,
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-possibly a race on the usb controller drivers or a problem with the
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Unifying receiver- reintroducing this workaround solves the problem.
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Overall what this workaround does is: If an input report from an
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unknown device is received, then a (re)enumeration is performed.
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related bug:
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https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1194649
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Signed-off-by: Nestor Lopez Casado <nlopezcasad@logitech.com>
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Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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---
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diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
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index 5207591a..cd33084 100644
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--- a/drivers/hid/hid-logitech-dj.c
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+++ b/drivers/hid/hid-logitech-dj.c
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@@ -192,6 +192,7 @@ static struct hid_ll_driver logi_dj_ll_driver;
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static int logi_dj_output_hidraw_report(struct hid_device *hid, u8 * buf,
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size_t count,
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unsigned char report_type);
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+static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev);
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static void logi_dj_recv_destroy_djhid_device(struct dj_receiver_dev *djrcv_dev,
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struct dj_report *dj_report)
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@@ -232,6 +233,7 @@ static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev,
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if (dj_report->report_params[DEVICE_PAIRED_PARAM_SPFUNCTION] &
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SPFUNCTION_DEVICE_LIST_EMPTY) {
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dbg_hid("%s: device list is empty\n", __func__);
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+ djrcv_dev->querying_devices = false;
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return;
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}
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@@ -242,6 +244,12 @@ static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev,
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return;
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}
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+ if (djrcv_dev->paired_dj_devices[dj_report->device_index]) {
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+ /* The device is already known. No need to reallocate it. */
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+ dbg_hid("%s: device is already known\n", __func__);
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+ return;
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+ }
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+
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dj_hiddev = hid_allocate_device();
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if (IS_ERR(dj_hiddev)) {
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dev_err(&djrcv_hdev->dev, "%s: hid_allocate_device failed\n",
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@@ -305,6 +313,7 @@ static void delayedwork_callback(struct work_struct *work)
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struct dj_report dj_report;
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unsigned long flags;
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int count;
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+ int retval;
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dbg_hid("%s\n", __func__);
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@@ -337,6 +346,25 @@ static void delayedwork_callback(struct work_struct *work)
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logi_dj_recv_destroy_djhid_device(djrcv_dev, &dj_report);
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break;
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default:
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+ /* A normal report (i. e. not belonging to a pair/unpair notification)
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+ * arriving here, means that the report arrived but we did not have a
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+ * paired dj_device associated to the report's device_index, this
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+ * means that the original "device paired" notification corresponding
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+ * to this dj_device never arrived to this driver. The reason is that
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+ * hid-core discards all packets coming from a device while probe() is
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+ * executing. */
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+ if (!djrcv_dev->paired_dj_devices[dj_report.device_index]) {
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+ /* ok, we don't know the device, just re-ask the
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+ * receiver for the list of connected devices. */
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+ retval = logi_dj_recv_query_paired_devices(djrcv_dev);
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+ if (!retval) {
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+ /* everything went fine, so just leave */
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+ break;
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+ }
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+ dev_err(&djrcv_dev->hdev->dev,
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+ "%s:logi_dj_recv_query_paired_devices "
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+ "error:%d\n", __func__, retval);
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+ }
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dbg_hid("%s: unexpected report type\n", __func__);
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}
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}
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@@ -367,6 +395,12 @@ static void logi_dj_recv_forward_null_report(struct dj_receiver_dev *djrcv_dev,
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if (!djdev) {
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dbg_hid("djrcv_dev->paired_dj_devices[dj_report->device_index]"
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" is NULL, index %d\n", dj_report->device_index);
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+ kfifo_in(&djrcv_dev->notif_fifo, dj_report, sizeof(struct dj_report));
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+
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+ if (schedule_work(&djrcv_dev->work) == 0) {
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+ dbg_hid("%s: did not schedule the work item, was already "
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+ "queued\n", __func__);
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+ }
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return;
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}
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@@ -397,6 +431,12 @@ static void logi_dj_recv_forward_report(struct dj_receiver_dev *djrcv_dev,
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if (dj_device == NULL) {
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dbg_hid("djrcv_dev->paired_dj_devices[dj_report->device_index]"
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" is NULL, index %d\n", dj_report->device_index);
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+ kfifo_in(&djrcv_dev->notif_fifo, dj_report, sizeof(struct dj_report));
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+
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+ if (schedule_work(&djrcv_dev->work) == 0) {
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+ dbg_hid("%s: did not schedule the work item, was already "
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+ "queued\n", __func__);
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+ }
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return;
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}
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@@ -444,6 +484,10 @@ static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev)
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struct dj_report *dj_report;
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int retval;
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+ /* no need to protect djrcv_dev->querying_devices */
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+ if (djrcv_dev->querying_devices)
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+ return 0;
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+
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dj_report = kzalloc(sizeof(struct dj_report), GFP_KERNEL);
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if (!dj_report)
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return -ENOMEM;
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@@ -455,6 +499,7 @@ static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev)
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return retval;
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}
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+
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static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev,
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unsigned timeout)
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{
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diff --git a/drivers/hid/hid-logitech-dj.h b/drivers/hid/hid-logitech-dj.h
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index fd28a5e..4a40003 100644
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--- a/drivers/hid/hid-logitech-dj.h
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+++ b/drivers/hid/hid-logitech-dj.h
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@@ -101,6 +101,7 @@ struct dj_receiver_dev {
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struct work_struct work;
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struct kfifo notif_fifo;
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spinlock_t lock;
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+ bool querying_devices;
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};
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struct dj_device {
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--
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cgit v0.9.2
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@ -1,3 +1,4 @@
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CONFIG_KUSER_HELPERS=y
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CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
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CONFIG_ARM_ARCH_TIMER=y
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# CONFIG_ARM_DT_BL_CPUFREQ is not set
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11
kernel.spec
11
kernel.spec
@ -95,7 +95,7 @@ Summary: The Linux kernel
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# The rc snapshot level
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%define rcrev 3
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# The git snapshot level
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%define gitrev 2
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%define gitrev 3
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# Set rpm version accordingly
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%define rpmversion 3.%{upstream_sublevel}.0
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%endif
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@ -745,9 +745,6 @@ Patch25057: iwl4965-better-skb-management-in-rx-path.patch
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#rhbz 979581
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Patch25069: iwlwifi-dvm-fix-calling-ieee80211_chswitch_done-with-NULL.patch
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#rhbz 989138
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Patch25072: HID-Revert-Revert-HID-Fix-logitech-dj-missing-Unifying-device-issue.patch
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#rhbz 977053
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Patch25073: iwl4965-reset-firmware-after-rfkill-off.patch
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@ -1455,9 +1452,6 @@ ApplyPatch iwl4965-better-skb-management-in-rx-path.patch
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#rhbz 979581
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ApplyPatch iwlwifi-dvm-fix-calling-ieee80211_chswitch_done-with-NULL.patch
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#rhbz 989138
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ApplyPatch HID-Revert-Revert-HID-Fix-logitech-dj-missing-Unifying-device-issue.patch
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#rhbz 977053
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ApplyPatch iwl4965-reset-firmware-after-rfkill-off.patch
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@ -2262,6 +2256,9 @@ fi
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# ||----w |
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# || ||
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%changelog
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* Sat Aug 03 2013 Josh Boyer <jwboyer@redhat.com> - 3.11.0-0.rc3.git3.1
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- Linux v3.11-rc3-288-gabe0308
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* Fri Aug 02 2013 Kyle McMartin <kyle@redhat.com> - 3.11.0-0.rc3.git2.1
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- radeon-si_calculate_leakage-use-div64.patch: fix a compile error on i686.
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- arm: disable CONFIG_LOCK_STAT, bloats .data massively, revisit shortly.
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