diff options
Diffstat (limited to 'drivers/mmc/mmc.c')
| -rw-r--r-- | drivers/mmc/mmc.c | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 6db37b1fc5..49c3349f55 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -108,7 +108,7 @@ int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) int mmc_send_status(struct mmc *mmc, int timeout) { struct mmc_cmd cmd; - int err; + int err, retries = 5; #ifdef CONFIG_MMC_TRACE int status; #endif @@ -121,17 +121,21 @@ int mmc_send_status(struct mmc *mmc, int timeout) do { err = mmc_send_cmd(mmc, &cmd, NULL); - if (err) + if (!err) { + if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) && + (cmd.response[0] & MMC_STATUS_CURR_STATE) != + MMC_STATE_PRG) + break; + else if (cmd.response[0] & MMC_STATUS_MASK) { + printf("Status Error: 0x%08X\n", + cmd.response[0]); + return COMM_ERR; + } + } else if (--retries < 0) return err; - else if (cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) - break; udelay(1000); - if (cmd.response[0] & MMC_STATUS_MASK) { - printf("Status Error: 0x%08X\n", cmd.response[0]); - return COMM_ERR; - } } while (timeout--); #ifdef CONFIG_MMC_TRACE @@ -305,11 +309,12 @@ 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 +346,6 @@ 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 +377,6 @@ 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 +611,8 @@ 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; |