mmc: sdhci: Factor out sdhci_finish_mrq()

In order to support commands during data transfer, there will have to be up
to two active requests (mrqs) at a time, instead of just one. That means
the driver must identify which one to finish. Prepare for that by factoring
out sdhci_finish_mrq().
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci.c

@@ -923,6 +923,11 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host,
 	sdhci_writew(host, mode, SDHCI_TRANSFER_MODE);
 }
 
+static void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
+{
+	tasklet_schedule(&host->finish_tasklet);
+}
+
 static void sdhci_finish_data(struct sdhci_host *host)
 {
 	struct mmc_data *data;
@@ -966,8 +971,9 @@ static void sdhci_finish_data(struct sdhci_host *host)
 		}
 
 		sdhci_send_command(host, data->stop);
-	} else
-		tasklet_schedule(&host->finish_tasklet);
+	} else {
+		sdhci_finish_mrq(host, data->mrq);
+	}
 }
 
 void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
@@ -999,7 +1005,7 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 			       mmc_hostname(host->mmc));
 			sdhci_dumpregs(host);
 			cmd->error = -EIO;
-			tasklet_schedule(&host->finish_tasklet);
+			sdhci_finish_mrq(host, cmd->mrq);
 			return;
 		}
 		timeout--;
@@ -1029,7 +1035,7 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 		pr_err("%s: Unsupported response type!\n",
 			mmc_hostname(host->mmc));
 		cmd->error = -EINVAL;
-		tasklet_schedule(&host->finish_tasklet);
+		sdhci_finish_mrq(host, cmd->mrq);
 		return;
 	}
 
@@ -1109,7 +1115,7 @@ static void sdhci_finish_command(struct sdhci_host *host)
 			sdhci_finish_data(host);
 
 		if (!cmd->data)
-			tasklet_schedule(&host->finish_tasklet);
+			sdhci_finish_mrq(host, cmd->mrq);
 	}
 }
 
@@ -1409,7 +1415,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 
 	if (!present || host->flags & SDHCI_DEVICE_DEAD) {
 		mrq->cmd->error = -ENOMEDIUM;
-		tasklet_schedule(&host->finish_tasklet);
+		sdhci_finish_mrq(host, mrq);
 	} else {
 		if (mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23))
 			sdhci_send_command(host, mrq->sbc);
@@ -2134,7 +2140,7 @@ static void sdhci_card_event(struct mmc_host *mmc)
 		sdhci_do_reset(host, SDHCI_RESET_DATA);
 
 		host->mrq->cmd->error = -ENOMEDIUM;
-		tasklet_schedule(&host->finish_tasklet);
+		sdhci_finish_mrq(host, host->mrq);
 	}
 
 	spin_unlock_irqrestore(&host->lock, flags);
@@ -2260,7 +2266,7 @@ static void sdhci_timeout_timer(unsigned long data)
 			else
 				host->mrq->cmd->error = -ETIMEDOUT;
 
-			tasklet_schedule(&host->finish_tasklet);
+			sdhci_finish_mrq(host, host->mrq);
 		}
 	}
 
@@ -2307,7 +2313,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *mask)
 			return;
 		}
 
-		tasklet_schedule(&host->finish_tasklet);
+		sdhci_finish_mrq(host, host->cmd->mrq);
 		return;
 	}
 
@@ -2382,7 +2388,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
 		if (data_cmd && (data_cmd->flags & MMC_RSP_BUSY)) {
 			if (intmask & SDHCI_INT_DATA_TIMEOUT) {
 				data_cmd->error = -ETIMEDOUT;
-				tasklet_schedule(&host->finish_tasklet);
+				sdhci_finish_mrq(host, data_cmd->mrq);
 				return;
 			}
 			if (intmask & SDHCI_INT_DATA_END) {
@@ -2394,7 +2400,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
 				if (host->cmd == data_cmd)
 					return;
 
-				tasklet_schedule(&host->finish_tasklet);
+				sdhci_finish_mrq(host, data_cmd->mrq);
 				return;
 			}
 		}
@@ -3465,7 +3471,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
 				" transfer!\n", mmc_hostname(mmc));
 
 			host->mrq->cmd->error = -ENOMEDIUM;
-			tasklet_schedule(&host->finish_tasklet);
+			sdhci_finish_mrq(host, host->mrq);
 		}
 
 		spin_unlock_irqrestore(&host->lock, flags);