diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 09113b9ad679..18a7afb2a5b2 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -538,10 +538,12 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, * If the cmd timeout and the max_busy_timeout of the host are both * specified, let's validate them. A failure means we need to prevent * the host from doing hw busy detection, which is done by converting - * to a R1 response instead of a R1B. + * to a R1 response instead of a R1B. Note, some hosts requires R1B, + * which also means they are on their own when it comes to deal with the + * busy timeout. */ - if (timeout_ms && host->max_busy_timeout && - (timeout_ms > host->max_busy_timeout)) + if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && timeout_ms && + host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) use_r1b_resp = false; cmd.opcode = MMC_SWITCH; diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index ba703384bea0..4c5eb3aa8e72 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -333,6 +333,7 @@ struct mmc_host { MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | \ MMC_CAP_UHS_DDR50) #define MMC_CAP_SYNC_RUNTIME_PM (1 << 21) /* Synced runtime PM suspends. */ +#define MMC_CAP_NEED_RSP_BUSY (1 << 22) /* Commands with R1B can't use R1. */ #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */ #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */ #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */