spi/s3c64xx: Remove unused message queue

Since the driver has been converted to use the core message pump code
the only use of the messsage queue in the driver is a check to see if
it is empty which will always succeed since nothing ever adds to the
queue. Just remove the queue.

Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 63e2070c6c14aa8e39a64a850248e07a38546708..3fb8c96ece417a682d74227e1ea4a2924c8790e0 100644 (file)
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -172,7 +172,6 @@ struct s3c64xx_spi_port_config {
  * @master: Pointer to the SPI Protocol master.
  * @cntrlr_info: Platform specific data for the controller this driver manages.
  * @tgl_spi: Pointer to the last CS left untoggled by the cs_change hint.
- * @queue: To log SPI xfer requests.
  * @lock: Controller specific lock.
  * @state: Set of FLAGS to indicate status.
  * @rx_dmach: Controller's DMA channel for Rx.
@@ -193,7 +192,6 @@ struct s3c64xx_spi_driver_data {
        struct spi_master               *master;
        struct s3c64xx_spi_info  *cntrlr_info;
        struct spi_device               *tgl_spi;
-       struct list_head                queue;
        spinlock_t                      lock;
        unsigned long                   sfr_start;
        struct completion               xfer_completion;
@@ -1056,8 +1054,6 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
        struct s3c64xx_spi_csinfo *cs = spi->controller_data;
        struct s3c64xx_spi_driver_data *sdd;
        struct s3c64xx_spi_info *sci;
-       struct spi_message *msg;
-       unsigned long flags;
        int err;
 
        sdd = spi_master_get_devdata(spi->master);
@@ -1088,21 +1084,6 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
 
        sci = sdd->cntrlr_info;
 
-       spin_lock_irqsave(&sdd->lock, flags);
-
-       list_for_each_entry(msg, &sdd->queue, queue) {
-               /* Is some mssg is already queued for this device */
-               if (msg->spi == spi) {
-                       dev_err(&spi->dev,
-                               "setup: attempt while mssg in queue!\n");
-                       spin_unlock_irqrestore(&sdd->lock, flags);
-                       err = -EBUSY;
-                       goto err_msgq;
-               }
-       }
-
-       spin_unlock_irqrestore(&sdd->lock, flags);
-
        pm_runtime_get_sync(&sdd->pdev->dev);
 
        /* Check if we can provide the requested rate */
@@ -1149,7 +1130,6 @@ setup_exit:
        /* setup() returns with device de-selected */
        disable_cs(sdd, spi);
 
-err_msgq:
        gpio_free(cs->line);
        spi_set_ctldata(spi, NULL);
 
@@ -1442,7 +1422,6 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
 
        spin_lock_init(&sdd->lock);
        init_completion(&sdd->xfer_completion);
-       INIT_LIST_HEAD(&sdd->queue);
 
        ret = devm_request_irq(&pdev->dev, irq, s3c64xx_spi_irq, 0,
                                "spi-s3c64xx", sdd);