mmc: rename mmc_can_ext_csd() to mmc_card_can_ext_csd()

mmc_can_* functions sometimes relate to the card and sometimes to the host.
Make it obvious by renaming this function to include 'card'. Also, convert to
proper bool type while we are here.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250401095847.29271-4-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: Wolfram Sang

drivers/mmc/core/mmc.c

@@ -680,7 +680,7 @@ static int mmc_read_ext_csd(struct mmc_card *card)
 	u8 *ext_csd;
 	int err;
 
-	if (!mmc_can_ext_csd(card))
+	if (!mmc_card_can_ext_csd(card))
 		return 0;
 
 	err = mmc_get_ext_csd(card, &ext_csd);
@@ -959,7 +959,7 @@ static int mmc_select_powerclass(struct mmc_card *card)
 	int err, ddr;
 
 	/* Power class selection is supported for versions >= 4.0 */
-	if (!mmc_can_ext_csd(card))
+	if (!mmc_card_can_ext_csd(card))
 		return 0;
 
 	bus_width = host->ios.bus_width;
@@ -1022,7 +1022,7 @@ static int mmc_select_bus_width(struct mmc_card *card)
 	unsigned idx, bus_width = 0;
 	int err = 0;
 
-	if (!mmc_can_ext_csd(card) ||
+	if (!mmc_card_can_ext_csd(card) ||
 	    !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA)))
 		return 0;
 
@@ -1543,7 +1543,7 @@ static int mmc_select_timing(struct mmc_card *card)
 {
 	int err = 0;
 
-	if (!mmc_can_ext_csd(card))
+	if (!mmc_card_can_ext_csd(card))
 		goto bus_speed;
 
 	if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) {

drivers/mmc/core/mmc_ops.c

@@ -383,7 +383,7 @@ int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd)
 	if (!card || !new_ext_csd)
 		return -EINVAL;
 
-	if (!mmc_can_ext_csd(card))
+	if (!mmc_card_can_ext_csd(card))
 		return -EOPNOTSUPP;
 
 	/*
@@ -944,7 +944,7 @@ static int mmc_interrupt_hpi(struct mmc_card *card)
 	return err;
 }
 
-int mmc_can_ext_csd(struct mmc_card *card)
+bool mmc_card_can_ext_csd(struct mmc_card *card)
 {
 	return (card && card->csd.mmca_vsn > CSD_SPEC_VER_3);
 }

drivers/mmc/core/mmc_ops.h

@@ -37,7 +37,7 @@ int mmc_send_cid(struct mmc_host *host, u32 *cid);
 int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
 int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
 int mmc_bus_test(struct mmc_card *card, u8 bus_width);
-int mmc_can_ext_csd(struct mmc_card *card);
+bool mmc_card_can_ext_csd(struct mmc_card *card);
 int mmc_switch_status(struct mmc_card *card, bool crc_err_fatal);
 bool mmc_prepare_busy_cmd(struct mmc_host *host, struct mmc_command *cmd,
 			  unsigned int timeout_ms);