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authorThierry Reding <thierry.reding@avionic-design.de>2012-01-02 01:15:36 +0000
committerAndy Fleming <afleming@freescale.com>2012-01-08 21:28:27 -0600
commit314284b1567f1ce29c19060641e7f213146f7ab8 (patch)
tree116155fe43126dbd7a94cff179e16b084c9f1e04 /include
parentbfe6f6235fdfa130ad8c5a8898ef4d3a37bcad8c (diff)
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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 <thierry.reding@avionic-design.de> Tested-by: Jason Liu <jason.hui@linaro.org>
Diffstat (limited to 'include')
-rw-r--r--include/mmc.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/mmc.h b/include/mmc.h
index 015a7f3..a850174 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