A MMC/SD card may always go into the programming state (and hence be
busy) after a block write. Therefore always check the card state, even
after single block writes. On the other hand there is no need to check
the card status after a read.
Also make sure that errors during busy polling are propagated upwards.
Signed-off-by: Jan Kloetzke <jan.kloet...@dspg.com>
Cc: Andy Fleming <aflem...@gmail.com>
---
drivers/mmc/mmc.c | 14 ++++++--------
1 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 6db37b1..7b09272 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -305,11 +305,12 @@ mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t
blkcnt, const void*src)
printf("mmc fail to send stop cmd\n");
return 0;
}
-
- /* Waiting for the ready status */
- mmc_send_status(mmc, timeout);
}
+ /* Waiting for the ready status */
+ if (mmc_send_status(mmc, timeout))
+ return 0;
+
return blkcnt;
}
@@ -341,7 +342,6 @@ int mmc_read_blocks(struct mmc *mmc, void *dst, ulong
start, lbaint_t blkcnt)
{
struct mmc_cmd cmd;
struct mmc_data data;
- int timeout = 1000;
if (blkcnt > 1)
cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
@@ -373,9 +373,6 @@ int mmc_read_blocks(struct mmc *mmc, void *dst, ulong
start, lbaint_t blkcnt)
printf("mmc fail to send stop cmd\n");
return 0;
}
-
- /* Waiting for the ready status */
- mmc_send_status(mmc, timeout);
}
return blkcnt;
@@ -610,7 +607,8 @@ int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
ret = mmc_send_cmd(mmc, &cmd, NULL);
/* Waiting for the ready status */
- mmc_send_status(mmc, timeout);
+ if (!ret)
+ ret = mmc_send_status(mmc, timeout);
return ret;
--
1.7.3.4
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