For CMD21 tuning data, the 128/64 bytes data may coming in very short time, before msdc_start_data(), the read data has already come, in this case, clear MSDC_INT will cause the interrupt disappear and lead to the thread hang.
the solution is just clear all interrupts before command was sent.
Signed-off-by: mingming lee mingming.lee@mediatek.com --- drivers/mmc/mtk-sd.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/mmc/mtk-sd.c b/drivers/mmc/mtk-sd.c index 23413731dc..b0365877d7 100644 --- a/drivers/mmc/mtk-sd.c +++ b/drivers/mmc/mtk-sd.c @@ -14,7 +14,6 @@ #include <malloc.h> #include <mapmem.h> #include <stdbool.h> -#include <watchdog.h> #include <asm/gpio.h> #include <dm/pinctrl.h> #include <linux/bitops.h> @@ -531,6 +530,7 @@ static int msdc_start_command(struct msdc_host *host, struct mmc_cmd *cmd, blocks = data->blocks;
writel(CMD_INTS_MASK, &host->base->msdc_int); + writel(DATA_INTS_MASK, &host->base->msdc_int); writel(blocks, &host->base->sdc_blk_num); writel(cmd->cmdarg, &host->base->sdc_arg); writel(rawcmd, &host->base->sdc_cmd); @@ -677,13 +677,9 @@ static int msdc_start_data(struct msdc_host *host, struct mmc_data *data) u32 size; int ret;
- WATCHDOG_RESET(); - if (data->flags == MMC_DATA_WRITE) host->last_data_write = 1;
- writel(DATA_INTS_MASK, &host->base->msdc_int); - size = data->blocks * data->blocksize;
if (data->flags == MMC_DATA_WRITE)