diff options
| author | Shubhrajyoti D <shubhrajyoti@ti.com> | 2011-10-28 17:14:17 +0530 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-10-29 14:05:47 +0200 |
| commit | 2856ac13b8ab41a17b1c65e4eed51543e55f4bac (patch) | |
| tree | 36eace120cd01d1a376839f180a2109c01cc89e0 /drivers/spi | |
| parent | 940ab88962bc1aff3273a8356d64577a6e386736 (diff) | |
| download | lwn-2856ac13b8ab41a17b1c65e4eed51543e55f4bac.tar.gz lwn-2856ac13b8ab41a17b1c65e4eed51543e55f4bac.zip | |
spi/omap: Use a workqueue per omap2_mcspi controller
Currently all the spi controllers share the work queue.
This patch allocates a work queue per controller.
Signed-off-by: Steve Wilkins <steve.wilkins@raymarine.com>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-omap2-mcspi.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index 322be7aea8b4..0192d1b79ca7 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -121,6 +121,7 @@ struct omap2_mcspi { /* SPI1 has 4 channels, while SPI2 has 2 */ struct omap2_mcspi_dma *dma_channels; struct device *dev; + struct workqueue_struct *wq; }; struct omap2_mcspi_cs { @@ -143,8 +144,6 @@ struct omap2_mcspi_regs { static struct omap2_mcspi_regs omap2_mcspi_ctx[OMAP2_MCSPI_MAX_CTRL]; -static struct workqueue_struct *omap2_mcspi_wq; - #define MOD_REG_BIT(val, mask, set) do { \ if (set) \ val |= mask; \ @@ -1043,7 +1042,7 @@ static int omap2_mcspi_transfer(struct spi_device *spi, struct spi_message *m) spin_lock_irqsave(&mcspi->lock, flags); list_add_tail(&m->queue, &mcspi->msg_queue); - queue_work(omap2_mcspi_wq, &mcspi->work); + queue_work(mcspi->wq, &mcspi->work); spin_unlock_irqrestore(&mcspi->lock, flags); return 0; @@ -1088,6 +1087,7 @@ static int __init omap2_mcspi_probe(struct platform_device *pdev) struct omap2_mcspi *mcspi; struct resource *r; int status = 0, i; + char wq_name[20]; master = spi_alloc_master(&pdev->dev, sizeof *mcspi); if (master == NULL) { @@ -1111,6 +1111,13 @@ static int __init omap2_mcspi_probe(struct platform_device *pdev) mcspi = spi_master_get_devdata(master); mcspi->master = master; + sprintf(wq_name, "omap2_mcspi/%d", master->bus_num); + mcspi->wq = alloc_workqueue(wq_name, WQ_MEM_RECLAIM, 1); + if (mcspi->wq == NULL) { + status = -ENOMEM; + goto err1; + } + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (r == NULL) { status = -ENODEV; @@ -1217,6 +1224,7 @@ static int __exit omap2_mcspi_remove(struct platform_device *pdev) spi_unregister_master(master); iounmap(base); kfree(dma_channels); + destroy_workqueue(mcspi->wq); return 0; } @@ -1275,10 +1283,6 @@ static struct platform_driver omap2_mcspi_driver = { static int __init omap2_mcspi_init(void) { - omap2_mcspi_wq = create_singlethread_workqueue( - omap2_mcspi_driver.driver.name); - if (omap2_mcspi_wq == NULL) - return -1; return platform_driver_probe(&omap2_mcspi_driver, omap2_mcspi_probe); } subsys_initcall(omap2_mcspi_init); @@ -1287,7 +1291,6 @@ static void __exit omap2_mcspi_exit(void) { platform_driver_unregister(&omap2_mcspi_driver); - destroy_workqueue(omap2_mcspi_wq); } module_exit(omap2_mcspi_exit); |