kernel: remove linux 3.18 support

No targets are using it anymore

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>

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 a5d85be..0000000
--- 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;