mmc: dw_mmc: use the 'slot' instead of 'cur_slot'

Remove the 'cur_slot'. Instead, just use 'slot'.
There is no multiple slots, so we need to consider only one slot.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

3 files changed, 18 insertions, 22 deletions

diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index 25691cca1881..35026795be28 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -157,8 +157,8 @@ static void dw_mci_exynos_set_clksel_timing(struct dw_mci *host, u32 timing)
          * HOLD register should be bypassed in case there is no phase shift
          * applied on CMD/DATA that is sent to the card.
          */
-        if (!SDMMC_CLKSEL_GET_DRV_WD3(clksel) && host->cur_slot)
-                set_bit(DW_MMC_CARD_NO_USE_HOLD, &host->cur_slot->flags);
+        if (!SDMMC_CLKSEL_GET_DRV_WD3(clksel) && host->slot)
+                set_bit(DW_MMC_CARD_NO_USE_HOLD, &host->slot->flags);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 8a4fa88a74d2..97a8b0c97341 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -392,7 +392,7 @@ static u32 dw_mci_prep_stop_abort(struct dw_mci *host, struct mmc_command *cmd)
         cmdr = stop->opcode | SDMMC_CMD_STOP |
                 SDMMC_CMD_RESP_CRC | SDMMC_CMD_RESP_EXP;
 
-        if (!test_bit(DW_MMC_CARD_NO_USE_HOLD, &host->cur_slot->flags))
+        if (!test_bit(DW_MMC_CARD_NO_USE_HOLD, &host->slot->flags))
                 cmdr |= SDMMC_CMD_USE_HOLD_REG;
 
         return cmdr;
@@ -480,7 +480,7 @@ static void dw_mci_dmac_complete_dma(void *arg)
         if ((host->use_dma == TRANS_MODE_EDMAC) &&
             data && (data->flags & MMC_DATA_READ))
                 /* Invalidate cache after read */
-                dma_sync_sg_for_cpu(mmc_dev(host->cur_slot->mmc),
+                dma_sync_sg_for_cpu(mmc_dev(host->slot->mmc),
                                     data->sg,
                                     data->sg_len,
                                     DMA_FROM_DEVICE);
@@ -820,7 +820,7 @@ static int dw_mci_edmac_start_dma(struct dw_mci *host,
 
         /* Flush cache before write */
         if (host->data->flags & MMC_DATA_WRITE)
-                dma_sync_sg_for_device(mmc_dev(host->cur_slot->mmc), sgl,
+                dma_sync_sg_for_device(mmc_dev(host->slot->mmc), sgl,
                                        sg_elems, DMA_TO_DEVICE);
 
         dma_async_issue_pending(host->dms->ch);
@@ -1282,7 +1282,6 @@ static void __dw_mci_start_request(struct dw_mci *host,
 
         mrq = slot->mrq;
 
-        host->cur_slot = slot;
         host->mrq = mrq;
 
         host->pending_events = 0;
@@ -1763,7 +1762,7 @@ static bool dw_mci_reset(struct dw_mci *host)
 
 ciu_out:
         /* After a CTRL reset we need to have CIU set clock registers  */
-        mci_send_cmd(host->cur_slot, SDMMC_CMD_UPD_CLK, 0);
+        mci_send_cmd(host->slot, SDMMC_CMD_UPD_CLK, 0);
 
         return ret;
 }
@@ -1790,11 +1789,11 @@ static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq)
         __acquires(&host->lock)
 {
         struct dw_mci_slot *slot;
-        struct mmc_host *prev_mmc = host->cur_slot->mmc;
+        struct mmc_host *prev_mmc = host->slot->mmc;
 
         WARN_ON(host->cmd || host->data);
 
-        host->cur_slot->mrq = NULL;
+        host->slot->mrq = NULL;
         host->mrq = NULL;
         if (!list_empty(&host->queue)) {
                 slot = list_entry(host->queue.next,
@@ -1944,7 +1943,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
                         err = dw_mci_command_complete(host, cmd);
                         if (cmd == mrq->sbc && !err) {
                                 prev_state = state = STATE_SENDING_CMD;
-                                __dw_mci_start_request(host, host->cur_slot,
+                                __dw_mci_start_request(host, host->slot,
                                                        mrq->cmd);
                                 goto unlock;
                         }
@@ -3261,9 +3260,9 @@ int dw_mci_runtime_suspend(struct device *dev)
 
         clk_disable_unprepare(host->ciu_clk);
 
-        if (host->cur_slot &&
-            (mmc_can_gpio_cd(host->cur_slot->mmc) ||
-             !mmc_card_is_removable(host->cur_slot->mmc)))
+        if (host->slot &&
+            (mmc_can_gpio_cd(host->slot->mmc) ||
+             !mmc_card_is_removable(host->slot->mmc)))
                 clk_disable_unprepare(host->biu_clk);
 
         return 0;
@@ -3276,9 +3275,9 @@ int dw_mci_runtime_resume(struct device *dev)
         struct dw_mci *host = dev_get_drvdata(dev);
         struct dw_mci_slot *slot = host->slot;
 
-        if (host->cur_slot &&
-            (mmc_can_gpio_cd(host->cur_slot->mmc) ||
-             !mmc_card_is_removable(host->cur_slot->mmc))) {
+        if (host->slot &&
+            (mmc_can_gpio_cd(host->slot->mmc) ||
+             !mmc_card_is_removable(host->slot->mmc))) {
                 ret = clk_prepare_enable(host->biu_clk);
                 if (ret)
                         return ret;
@@ -3326,9 +3325,9 @@ int dw_mci_runtime_resume(struct device *dev)
         return 0;
 
 err:
-        if (host->cur_slot &&
-            (mmc_can_gpio_cd(host->cur_slot->mmc) ||
-             !mmc_card_is_removable(host->cur_slot->mmc)))
+        if (host->slot &&
+            (mmc_can_gpio_cd(host->slot->mmc) ||
+             !mmc_card_is_removable(host->slot->mmc)))
                 clk_disable_unprepare(host->biu_clk);
 
         return ret;
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 1ec8f4092fab..75da3756955d 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -132,7 +132,6 @@ struct dw_mci_dma_slave {
  * =======
  *
  * @lock is a softirq-safe spinlock protecting @queue as well as
- * @cur_slot, @mrq and @state. These must always be updated
  * at the same time while holding @lock.
  *
  * @irq_lock is an irq-safe spinlock protecting the INTMASK register
@@ -168,7 +167,6 @@ struct dw_mci {
         struct scatterlist      *sg;
         struct sg_mapping_iter  sg_miter;
 
-        struct dw_mci_slot      *cur_slot;
         struct mmc_request      *mrq;
         struct mmc_command      *cmd;
         struct mmc_data         *data;
@@ -204,7 +202,6 @@ struct dw_mci {
 
         u32                     bus_hz;
         u32                     current_speed;
-        u32                     num_slots;
         u32                     fifoth_val;
         u16                     verid;
         struct device           *dev;