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mmc: core: warn when card doesn't support HPI 

Someone could use send_hpi_cmd() on a card that doesn't advertise support
for HPI.  Then maybe didn't work fine.  Because card->ext_csd.hpi_cmd
didn't set.  So if card didn't support hpi, return the warning message.

And CMD12's flags is MMC_RSP_R1B.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Jaehoon Chung 2012-03-12 08:57:27 +09:00 committed by Chris Ball
parent ee698f5034
commit 2378975bd5
1 changed files with 8 additions and 4 deletions
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12
drivers/mmc/core/mmc_ops.c
View File

@ -553,18 +553,22 @@ int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status)
{
struct mmc_command cmd = {0};
unsigned int opcode;
unsigned int flags;
int err;
if (!card->ext_csd.hpi) {
pr_warning("%s: Card didn't support HPI command\n",
mmc_hostname(card->host));
return -EINVAL;
}
opcode = card->ext_csd.hpi_cmd;
if (opcode == MMC_STOP_TRANSMISSION)
flags = MMC_RSP_R1 | MMC_CMD_AC;
cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
else if (opcode == MMC_SEND_STATUS)
flags = MMC_RSP_R1 | MMC_CMD_AC;
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
cmd.opcode = opcode;
cmd.arg = card->rca << 16 | 1;
cmd.flags = flags;
cmd.cmd_timeout_ms = card->ext_csd.out_of_int_time;
err = mmc_wait_for_cmd(card->host, &cmd, 0);