From 28f69b9a229108834af34da099949076d9fd4ff3 Mon Sep 17 00:00:00 2001 From: Yousong Zhou <yszhou4tech@gmail.com> Date: Sat, 29 Aug 2015 21:26:11 +0800 Subject: [PATCH] sunxi: mmc: set transfer timeout according to byte_cnt. Originally a timeout value of 2 seconds was used regardless of the size of data to be transfered. This prevented slow devices from working correctly while there was no much gain for faster devices, e.g. it takes 3708ms for a transfer of uImage of size 1899008 bytes. Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- drivers/mmc/sunxi_mmc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c index f9b9493c89..25f18adb67 100644 --- a/drivers/mmc/sunxi_mmc.c +++ b/drivers/mmc/sunxi_mmc.c @@ -257,9 +257,11 @@ static int mmc_trans_data_by_cpu(struct mmc *mmc, struct mmc_data *data) const uint32_t status_bit = reading ? SUNXI_MMC_STATUS_FIFO_EMPTY : SUNXI_MMC_STATUS_FIFO_FULL; unsigned i; - unsigned byte_cnt = data->blocksize * data->blocks; - unsigned timeout_msecs = 2000; unsigned *buff = (unsigned int *)(reading ? data->dest : data->src); + unsigned byte_cnt = data->blocksize * data->blocks; + unsigned timeout_msecs = byte_cnt >> 8; + if (timeout_msecs < 2000) + timeout_msecs = 2000; /* Always read / write data through the CPU */ setbits_le32(&mmchost->reg->gctrl, SUNXI_MMC_GCTRL_ACCESS_BY_AHB); -- 2.39.5