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mmc: mmc: extend the mmc_send_tuning()

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The mmc_execute_tuning() has already prepared the opcode,
there is no need to prepare it again at mmc_send_tuning(),
and, there is a BUG of mmc_send_tuning() to determine the opcode
by bus width, assume eMMC was running at HS200, 4bit mode,
then the mmc_send_tuning() will overwrite the opcode from CMD21
to CMD19, then got error.

in addition, extend an argument of "cmd_error" to allow getting
if there was cmd error when tune response.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
[Ulf: Rebased patch]
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Chaotian Jing
2015-10-27 14:24:28 +08:00
committed by Ulf Hansson
parent c9b5061e77
commit 9979dbe515
9 changed files with 16 additions and 16 deletions
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2
drivers/mmc/host/sdhci-msm.c
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@@ -373,7 +373,7 @@ retry:
if (rc)
return rc;
rc = mmc_send_tuning(mmc);
rc = mmc_send_tuning(mmc, opcode, NULL);
if (!rc) {
/* Tuning is successful at this tuning point */
tuned_phases[tuned_phase_cnt++] = phase;