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authorHauke Mehrtens <hauke@hauke-m.de>2019-03-25 15:29:06 +0100
committerHauke Mehrtens <hauke@hauke-m.de>2019-05-03 22:41:38 +0200
commit1325e74e0c2f9ebdafe05b1492cec77a60059920 (patch)
treeaf21c4890a4ae5c08dc08ee7cabdc14a651f33ad /target/linux/generic/pending-3.18/092-03-spi-Only-idle-the-message-pump-in-the-worker-kthread.patch
parent675832de79ec14ddc1183a66d1084aff7a856289 (diff)
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kernel: Remove support for kernel 3.18
No target is using kernel 3.18 anymore, remove all the generic support for kernel 3.18. The removed packages are depending on kernel 3.18 only and are not used on any recent kernel. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Diffstat (limited to 'target/linux/generic/pending-3.18/092-03-spi-Only-idle-the-message-pump-in-the-worker-kthread.patch')
-rw-r--r--target/linux/generic/pending-3.18/092-03-spi-Only-idle-the-message-pump-in-the-worker-kthread.patch83
1 files changed, 0 insertions, 83 deletions
diff --git a/target/linux/generic/pending-3.18/092-03-spi-Only-idle-the-message-pump-in-the-worker-kthread.patch b/target/linux/generic/pending-3.18/092-03-spi-Only-idle-the-message-pump-in-the-worker-kthread.patch
deleted file mode 100644
index a5d85be2b4..0000000000
--- a/target/linux/generic/pending-3.18/092-03-spi-Only-idle-the-message-pump-in-the-worker-kthread.patch
+++ /dev/null
@@ -1,83 +0,0 @@
-From: Mark Brown <broonie@kernel.org>
-Date: Wed, 10 Dec 2014 13:46:33 +0000
-Subject: [PATCH] spi: Only idle the message pump in the worker kthread
-
-In order to avoid the situation where the kthread is waiting for another
-context to make the hardware idle let the message pump know if it's being
-called from the worker thread context and if it isn't then defer to the
-worker thread instead of idling the hardware immediately. This will ensure
-that if this situation happens we block rather than busy waiting.
-
-Signed-off-by: Mark Brown <broonie@kernel.org>
----
-
---- a/drivers/spi/spi.c
-+++ b/drivers/spi/spi.c
-@@ -875,8 +875,9 @@ void spi_finalize_current_transfer(struc
- EXPORT_SYMBOL_GPL(spi_finalize_current_transfer);
-
- /**
-- * spi_pump_messages - kthread work function which processes spi message queue
-- * @work: pointer to kthread work struct contained in the master struct
-+ * __spi_pump_messages - function which processes spi message queue
-+ * @master: master to process queue for
-+ * @in_kthread: true if we are in the context of the message pump thread
- *
- * This function checks if there is any spi message in the queue that
- * needs processing and if so call out to the driver to initialize hardware
-@@ -886,10 +887,8 @@ EXPORT_SYMBOL_GPL(spi_finalize_current_t
- * inside spi_sync(); the queue extraction handling at the top of the
- * function should deal with this safely.
- */
--static void spi_pump_messages(struct kthread_work *work)
-+static void __spi_pump_messages(struct spi_master *master, bool in_kthread)
- {
-- struct spi_master *master =
-- container_of(work, struct spi_master, pump_messages);
- unsigned long flags;
- bool was_busy = false;
- int ret;
-@@ -916,6 +915,15 @@ static void spi_pump_messages(struct kth
- spin_unlock_irqrestore(&master->queue_lock, flags);
- return;
- }
-+
-+ /* Only do teardown in the thread */
-+ if (!in_kthread) {
-+ queue_kthread_work(&master->kworker,
-+ &master->pump_messages);
-+ spin_unlock_irqrestore(&master->queue_lock, flags);
-+ return;
-+ }
-+
- master->busy = false;
- master->idling = true;
- spin_unlock_irqrestore(&master->queue_lock, flags);
-@@ -1004,6 +1012,18 @@ static void spi_pump_messages(struct kth
- }
- }
-
-+/**
-+ * spi_pump_messages - kthread work function which processes spi message queue
-+ * @work: pointer to kthread work struct contained in the master struct
-+ */
-+static void spi_pump_messages(struct kthread_work *work)
-+{
-+ struct spi_master *master =
-+ container_of(work, struct spi_master, pump_messages);
-+
-+ __spi_pump_messages(master, true);
-+}
-+
- static int spi_init_queue(struct spi_master *master)
- {
- struct sched_param param = { .sched_priority = MAX_RT_PRIO - 1 };
-@@ -2165,7 +2185,7 @@ static int __spi_sync(struct spi_device
- * can.
- */
- if (master->transfer == spi_queued_transfer)
-- spi_pump_messages(&master->pump_messages);
-+ __spi_pump_messages(master, false);
-
- wait_for_completion(&done);
- status = message->status;