diff options
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/core.c | 55 | ||||
| -rw-r--r-- | drivers/mmc/core/mmc_ops.c | 1 |
2 files changed, 32 insertions, 24 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 0b6141d29dbd..a7e2c4b2f18c 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -404,6 +404,7 @@ int mmc_interrupt_hpi(struct mmc_card *card) { int err; u32 status; + unsigned long prg_wait; BUG_ON(!card); @@ -419,30 +420,38 @@ int mmc_interrupt_hpi(struct mmc_card *card) goto out; } - /* - * If the card status is in PRG-state, we can send the HPI command. - */ - if (R1_CURRENT_STATE(status) == R1_STATE_PRG) { - do { - /* - * We don't know when the HPI command will finish - * processing, so we need to resend HPI until out - * of prg-state, and keep checking the card status - * with SEND_STATUS. If a timeout error occurs when - * sending the HPI command, we are already out of - * prg-state. - */ - err = mmc_send_hpi_cmd(card, &status); - if (err) - pr_debug("%s: abort HPI (%d error)\n", - mmc_hostname(card->host), err); + switch (R1_CURRENT_STATE(status)) { + case R1_STATE_IDLE: + case R1_STATE_READY: + case R1_STATE_STBY: + /* + * In idle states, HPI is not needed and the caller + * can issue the next intended command immediately + */ + goto out; + case R1_STATE_PRG: + break; + default: + /* In all other states, it's illegal to issue HPI */ + pr_debug("%s: HPI cannot be sent. Card state=%d\n", + mmc_hostname(card->host), R1_CURRENT_STATE(status)); + err = -EINVAL; + goto out; + } - err = mmc_send_status(card, &status); - if (err) - break; - } while (R1_CURRENT_STATE(status) == R1_STATE_PRG); - } else - pr_debug("%s: Left prg-state\n", mmc_hostname(card->host)); + err = mmc_send_hpi_cmd(card, &status); + if (err) + goto out; + + prg_wait = jiffies + msecs_to_jiffies(card->ext_csd.out_of_int_time); + do { + err = mmc_send_status(card, &status); + + if (!err && R1_CURRENT_STATE(status) == R1_STATE_TRAN) + break; + if (time_after(jiffies, prg_wait)) + err = -ETIMEDOUT; + } while (!err); out: mmc_release_host(card->host); diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 69370f494e05..0ed2cc5f35b6 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -569,7 +569,6 @@ int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status) cmd.opcode = opcode; cmd.arg = card->rca << 16 | 1; - cmd.cmd_timeout_ms = card->ext_csd.out_of_int_time; err = mmc_wait_for_cmd(card->host, &cmd, 0); if (err) { |