mmc: mmc: Enable CQE's

Enable or disable CQE when a card is added or removed respectively.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

drivers/mmc/core/bus.c

@@ -369,10 +369,17 @@ int mmc_add_card(struct mmc_card *card)
  */
 void mmc_remove_card(struct mmc_card *card)
 {
+	struct mmc_host *host = card->host;
+
 #ifdef CONFIG_DEBUG_FS
 	mmc_remove_card_debugfs(card);
 #endif
 
+	if (host->cqe_enabled) {
+		host->cqe_ops->cqe_disable(host);
+		host->cqe_enabled = false;
+	}
+
 	if (mmc_card_present(card)) {
 		if (mmc_host_is_spi(card->host)) {
 			pr_info("%s: SPI card removed\n",

drivers/mmc/core/mmc.c

@@ -1809,6 +1809,18 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 	 */
 	card->reenable_cmdq = card->ext_csd.cmdq_en;
 
+	if (card->ext_csd.cmdq_en && !host->cqe_enabled) {
+		err = host->cqe_ops->cqe_enable(host, card);
+		if (err) {
+			pr_err("%s: Failed to enable CQE, error %d\n",
+				mmc_hostname(host), err);
+		} else {
+			host->cqe_enabled = true;
+			pr_info("%s: Command Queue Engine enabled\n",
+				mmc_hostname(host));
+		}
+	}
+
 	if (!oldcard)
 		host->card = card;