Get rid of the 'master is unqueued' warning messages during boot.
Signed-off-by: Hannes Reinecke <[email protected]>
---
drivers/spi/spi-orion.c | 147 ++++++++++++++++-------------------------------
1 files changed, 49 insertions(+), 98 deletions(-)
diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c
index dfd04e9..58e703f 100644
--- a/drivers/spi/spi-orion.c
+++ b/drivers/spi/spi-orion.c
@@ -35,22 +35,14 @@
#define ORION_SPI_CLK_PRESCALE_MASK 0x1F
struct orion_spi {
- struct work_struct work;
-
- /* Lock access to transfer list. */
- spinlock_t lock;
-
- struct list_head msg_queue;
struct spi_master *master;
void __iomem *base;
unsigned int max_speed;
unsigned int min_speed;
struct orion_spi_info *spi_info;
- struct clk *clk;
+ struct clk *clk;
};
-static struct workqueue_struct *orion_spi_wq;
-
static inline void __iomem *spi_reg(struct orion_spi *orion_spi, u32 reg)
{
return orion_spi->base + reg;
@@ -277,73 +269,53 @@ out:
}
-static void orion_spi_work(struct work_struct *work)
+static void orion_spi_work(struct orion_spi *orion_spi, struct spi_message *m)
{
- struct orion_spi *orion_spi =
- container_of(work, struct orion_spi, work);
-
- spin_lock_irq(&orion_spi->lock);
- while (!list_empty(&orion_spi->msg_queue)) {
- struct spi_message *m;
- struct spi_device *spi;
- struct spi_transfer *t = NULL;
- int par_override = 0;
- int status = 0;
- int cs_active = 0;
-
- m = container_of(orion_spi->msg_queue.next, struct spi_message,
- queue);
-
- list_del_init(&m->queue);
- spin_unlock_irq(&orion_spi->lock);
-
- spi = m->spi;
-
- /* Load defaults */
- status = orion_spi_setup_transfer(spi, NULL);
-
- if (status < 0)
- goto msg_done;
-
- list_for_each_entry(t, &m->transfers, transfer_list) {
- if (par_override || t->speed_hz || t->bits_per_word) {
- par_override = 1;
- status = orion_spi_setup_transfer(spi, t);
- if (status < 0)
- break;
- if (!t->speed_hz && !t->bits_per_word)
- par_override = 0;
- }
-
- if (!cs_active) {
- orion_spi_set_cs(orion_spi, 1);
- cs_active = 1;
- }
-
- if (t->len)
- m->actual_length +=
- orion_spi_write_read(spi, t);
-
- if (t->delay_usecs)
- udelay(t->delay_usecs);
-
- if (t->cs_change) {
- orion_spi_set_cs(orion_spi, 0);
- cs_active = 0;
- }
+ struct spi_device *spi;
+ struct spi_transfer *t = NULL;
+ int par_override = 0;
+ int status = 0;
+ int cs_active = 0;
+
+ spi = m->spi;
+
+ /* Load defaults */
+ status = orion_spi_setup_transfer(spi, NULL);
+ if (status < 0)
+ goto msg_done;
+
+ list_for_each_entry(t, &m->transfers, transfer_list) {
+ if (par_override || t->speed_hz || t->bits_per_word) {
+ par_override = 1;
+ status = orion_spi_setup_transfer(spi, t);
+ if (status < 0)
+ break;
+ if (!t->speed_hz && !t->bits_per_word)
+ par_override = 0;
}
-msg_done:
- if (cs_active)
- orion_spi_set_cs(orion_spi, 0);
+ if (!cs_active) {
+ orion_spi_set_cs(orion_spi, 1);
+ cs_active = 1;
+ }
+
+ if (t->len)
+ m->actual_length += orion_spi_write_read(spi, t);
- m->status = status;
- m->complete(m->context);
+ if (t->delay_usecs)
+ udelay(t->delay_usecs);
- spin_lock_irq(&orion_spi->lock);
+ if (t->cs_change) {
+ orion_spi_set_cs(orion_spi, 0);
+ cs_active = 0;
+ }
}
- spin_unlock_irq(&orion_spi->lock);
+msg_done:
+ if (cs_active)
+ orion_spi_set_cs(orion_spi, 0);
+
+ m->status = status;
}
static int __init orion_spi_reset(struct orion_spi *orion_spi)
@@ -376,23 +348,22 @@ static int orion_spi_setup(struct spi_device *spi)
return 0;
}
-static int orion_spi_transfer(struct spi_device *spi, struct spi_message *m)
+static int orion_spi_transfer_one_message(struct spi_master *spi,
+ struct spi_message *m)
{
struct orion_spi *orion_spi;
struct spi_transfer *t = NULL;
- unsigned long flags;
+ orion_spi = spi_master_get_devdata(spi);
m->actual_length = 0;
m->status = 0;
/* reject invalid messages and transfers */
- if (list_empty(&m->transfers) || !m->complete)
+ if (list_empty(&m->transfers))
return -EINVAL;
- orion_spi = spi_master_get_devdata(spi->master);
-
list_for_each_entry(t, &m->transfers, transfer_list) {
- unsigned int bits_per_word = spi->bits_per_word;
+ unsigned int bits_per_word = m->spi->bits_per_word;
if (t->tx_buf == NULL && t->rx_buf == NULL && t->len) {
dev_err(&spi->dev,
@@ -430,18 +401,13 @@ static int orion_spi_transfer(struct spi_device *spi,
struct spi_message *m)
}
}
-
- spin_lock_irqsave(&orion_spi->lock, flags);
- list_add_tail(&m->queue, &orion_spi->msg_queue);
- queue_work(orion_spi_wq, &orion_spi->work);
- spin_unlock_irqrestore(&orion_spi->lock, flags);
+ orion_spi_work(orion_spi, m);
+ spi_finalize_current_message(spi);
return 0;
msg_rejected:
/* Message rejected and not queued */
m->status = -EINVAL;
- if (m->complete)
- m->complete(m->context);
return -EINVAL;
}
@@ -469,7 +435,7 @@ static int __init orion_spi_probe(struct platform_device
*pdev)
master->mode_bits = 0;
master->setup = orion_spi_setup;
- master->transfer = orion_spi_transfer;
+ master->transfer_one_message = orion_spi_transfer_one_message;
master->num_chipselect = ORION_NUM_CHIPSELECTS;
dev_set_drvdata(&pdev->dev, master);
@@ -503,11 +469,6 @@ static int __init orion_spi_probe(struct platform_device
*pdev)
}
spi->base = ioremap(r->start, SZ_1K);
- INIT_WORK(&spi->work, orion_spi_work);
-
- spin_lock_init(&spi->lock);
- INIT_LIST_HEAD(&spi->msg_queue);
-
if (orion_spi_reset(spi) < 0)
goto out_rel_mem;
@@ -537,8 +498,6 @@ static int __exit orion_spi_remove(struct platform_device
*pdev)
master = dev_get_drvdata(&pdev->dev);
spi = spi_master_get_devdata(master);
- cancel_work_sync(&spi->work);
-
clk_disable_unprepare(spi->clk);
clk_put(spi->clk);
@@ -562,21 +521,13 @@ static struct platform_driver orion_spi_driver = {
static int __init orion_spi_init(void)
{
- orion_spi_wq = create_singlethread_workqueue(
- orion_spi_driver.driver.name);
- if (orion_spi_wq == NULL)
- return -ENOMEM;
-
return platform_driver_probe(&orion_spi_driver, orion_spi_probe);
}
module_init(orion_spi_init);
static void __exit orion_spi_exit(void)
{
- flush_workqueue(orion_spi_wq);
platform_driver_unregister(&orion_spi_driver);
-
- destroy_workqueue(orion_spi_wq);
}
module_exit(orion_spi_exit);
--
1.7.4.2
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