mmc: core: SPI mode remove cmd7

commit fec40f4 upstream.

SPI mode doesn't support cmd7, so remove it in mmc_sdio_alive() and
confirm if sdio is active by checking CCCR register value is available
or not.

Signed-off-by: Rex Chen <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ulf Hansson <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Rex-Chen-NXP

drivers/mmc/core/sdio.c

@@ -945,7 +945,11 @@ static void mmc_sdio_remove(struct mmc_host *host)
  */
 static int mmc_sdio_alive(struct mmc_host *host)
 {
-	return mmc_select_card(host->card);
+	if (!mmc_host_is_spi(host))
+		return mmc_select_card(host->card);
+	else
+		return mmc_io_rw_direct(host->card, 0, 0, SDIO_CCCR_CCCR, 0,
+					NULL);
 }
 
 /*