mmc: sdhci: Get rid of host->busy_handle

Now that there is host->data_cmd to record the command for which a data
interrupt is expected, it is possible to determine whether a command with
busy signaling has completed without an extra flag. So host->busy_handle
is not needed. Remove it.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci.c

@@ -1014,7 +1014,6 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 	mod_timer(&host->timer, timeout);
 
 	host->cmd = cmd;
-	host->busy_handle = 0;
 	if (cmd->data || cmd->flags & MMC_RSP_BUSY) {
 		WARN_ON(host->data_cmd);
 		host->data_cmd = cmd;
@@ -1094,9 +1093,8 @@ static void sdhci_finish_command(struct sdhci_host *host)
 		if (cmd->data) {
 			DBG("Cannot wait for busy signal when also doing a data transfer");
 		} else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) &&
-			   !host->busy_handle) {
-			/* Mark that command complete before busy is ended */
-			host->busy_handle = 1;
+			   cmd == host->data_cmd) {
+			/* Command complete before busy is ended */
 			return;
 		}
 	}
@@ -2393,10 +2391,10 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
 				 * before the command completed, so make
 				 * sure we do things in the proper order.
 				 */
-				if (host->busy_handle)
-					tasklet_schedule(&host->finish_tasklet);
-				else
-					host->busy_handle = 1;
+				if (host->cmd == data_cmd)
+					return;
+
+				tasklet_schedule(&host->finish_tasklet);
 				return;
 			}
 		}

drivers/mmc/host/sdhci.h

@@ -469,7 +469,6 @@ struct sdhci_host {
 	struct mmc_command *data_cmd;	/* Current data command */
 	struct mmc_data *data;	/* Current data request */
 	unsigned int data_early:1;	/* Data finished before cmd */
-	unsigned int busy_handle:1;	/* Handling the order of Busy-end */
 
 	struct sg_mapping_iter sg_miter;	/* SG state for PIO */
 	unsigned int blocks;	/* remaining PIO blocks */