From 314284b1567f1ce29c19060641e7f213146f7ab8 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 2 Jan 2012 01:15:36 +0000 Subject: mmc: Change board_mmc_getcd() function prototype. The new API no longer uses the extra cd parameter that was used to store the card presence state. Instead, this information is returned via the function's return value. board_mmc_getcd() returns -1 to indicate that no card-detection mechanism is implemented; 0 indicates that no card is present and 1 is returned if it was detected that a card is present. The rationale for this change can be found in the following email thread: http://lists.denx.de/pipermail/u-boot/2011-November/110180.html In summary, the old API was not consistent with the rest of the MMC API which always passes a struct mmc as the first parameter. Furthermore the cd parameter was used to mean "card absence" in some implementations and "card presence" in others. Signed-off-by: Thierry Reding Tested-by: Jason Liu --- include/mmc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/mmc.h') diff --git a/include/mmc.h b/include/mmc.h index 015a7f36ae..a850174ab8 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -314,7 +314,7 @@ struct mmc *find_mmc_device(int dev_num); int mmc_set_dev(int dev_num); void print_mmc_devices(char separator); int get_mmc_num(void); -int board_mmc_getcd(u8 *cd, struct mmc *mmc); +int board_mmc_getcd(struct mmc *mmc); int mmc_switch_part(int dev_num, unsigned int part_num); #ifdef CONFIG_GENERIC_MMC -- cgit v1.2.1