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mmc: renesas_sdhi: skip SCC error check when retuning 

Checking for SCC error during retuning is unnecessary.

Signed-off-by: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com>
[Niklas: fix small style issue]
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Masaharu Hayakawa 2018-08-30 01:32:06 +02:00 committed by Ulf Hansson
parent cbf6d82cad
commit 75f349a153
1 changed files with 13 additions and 0 deletions
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13
drivers/mmc/host/renesas_sdhi_core.c
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@ -486,6 +486,19 @@ static int renesas_sdhi_select_tuning(struct tmio_mmc_host *host)
static bool renesas_sdhi_check_scc_error(struct tmio_mmc_host *host)
{
struct renesas_sdhi *priv = host_to_priv(host);
bool use_4tap = host->pdata->flags & TMIO_MMC_HAVE_4TAP_HS400;
/*
* Skip checking SCC errors when running on 4 taps in HS400 mode as
* any retuning would still result in the same 4 taps being used.
*/
if (!(host->mmc->ios.timing == MMC_TIMING_UHS_SDR104) &&
!(host->mmc->ios.timing == MMC_TIMING_MMC_HS200) &&
!(host->mmc->ios.timing == MMC_TIMING_MMC_HS400 && !use_4tap))
return false;
if (mmc_doing_retune(host->mmc))
return false;
/* Check SCC error */
if (sd_scc_read32(host, priv, SH_MOBILE_SDHI_SCC_RVSCNTL) &