mmc: meson-gx: remove meson_mmc_get_cd

MMC core only checks whether return value of .get_cd() equals zero.
Therefore -ENOSYS and 1 are effectively the same and the function
can be removed.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/16502040-3beb-a3cc-b28d-28184fba0f10@gmail.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/meson-gx-mmc.c

@@ -1083,20 +1083,6 @@ static irqreturn_t meson_mmc_irq_thread(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-/*
- * NOTE: we only need this until the GPIO/pinctrl driver can handle
- * interrupts.  For now, the MMC core will use this for polling.
- */
-static int meson_mmc_get_cd(struct mmc_host *mmc)
-{
-	int status = mmc_gpio_get_cd(mmc);
-
-	if (status == -ENOSYS)
-		return 1; /* assume present */
-
-	return status;
-}
-
 static void meson_mmc_cfg_init(struct meson_host *host)
 {
 	u32 cfg = 0;
@@ -1165,7 +1151,7 @@ static void meson_mmc_ack_sdio_irq(struct mmc_host *mmc)
 static const struct mmc_host_ops meson_mmc_ops = {
 	.request	= meson_mmc_request,
 	.set_ios	= meson_mmc_set_ios,
-	.get_cd         = meson_mmc_get_cd,
+	.get_cd         = mmc_gpio_get_cd,
 	.pre_req	= meson_mmc_pre_req,
 	.post_req	= meson_mmc_post_req,
 	.execute_tuning = meson_mmc_resampling_tuning,