diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 240469a881a27..6fa578a301863 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -668,7 +668,8 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card) if (!mmc_host_is_spi(card->host) && (card->host->ios.timing == MMC_TIMING_UHS_SDR50 || card->host->ios.timing == MMC_TIMING_UHS_DDR50 || - card->host->ios.timing == MMC_TIMING_UHS_SDR104)) { + card->host->ios.timing == MMC_TIMING_UHS_SDR104) && + !card->host->never_retune) { err = mmc_execute_tuning(card); /* @@ -681,6 +682,7 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card) if (err && card->host->ios.timing == MMC_TIMING_UHS_DDR50) { pr_warn("%s: ddr50 tuning failed\n", mmc_hostname(card->host)); + card->host->never_retune = 1; err = 0; } } diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 62a6847a3b6f0..9dd17f2fe0451 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -451,6 +451,7 @@ struct mmc_host { unsigned int claimed:1; /* host exclusively claimed */ unsigned int doing_init_tune:1; /* initial tuning in progress */ unsigned int can_retune:1; /* re-tuning can be used */ + unsigned int never_retune:1; /* re-tuning can never be used */ unsigned int doing_retune:1; /* re-tuning in progress */ unsigned int retune_now:1; /* do re-tuning at next req */ unsigned int retune_paused:1; /* re-tuning is temporarily disabled */