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spi: Go back to immediate teardown

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Commit 412e603732 ("spi: core: avoid waking pump thread from spi_sync
instead run teardown delayed") introduced regressions on some boards,
apparently connected to spi_mem not triggering shutdown properly any
more.  Since we've thus far been unable to figure out exactly where the
breakage is revert the optimisation for now.

Reported-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: kernel@martin.sperl.org
This commit is contained in:
Mark Brown 2019-01-23 17:29:53 +00:00
parent 51eea52d26
commit f0125f1a55
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
2 changed files with 33 additions and 91 deletions
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include/linux/spi/spi.h
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@ -334,7 +334,6 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* @kworker: thread struct for message pump
* @kworker_task: pointer to task for message pump kworker thread
* @pump_messages: work struct for scheduling work to the message pump
* @pump_idle_teardown: work structure for scheduling a teardown delayed
* @queue_lock: spinlock to syncronise access to message queue
* @queue: message queue
* @idling: the device is entering idle state
@ -533,7 +532,6 @@ struct spi_controller {
struct kthread_worker kworker;
struct task_struct *kworker_task;
struct kthread_work pump_messages;
struct kthread_delayed_work pump_idle_teardown;
spinlock_t queue_lock;
struct list_head queue;
struct spi_message *cur_msg;