diff options
| author | Xu Ziyuan <xzy.xu@rock-chips.com> | 2016-07-28 05:25:48 +0300 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2016-08-05 08:04:36 +0300 |
| commit | 720724d09852858a3938f7bfcbbb3d1a0fdd6b4c (patch) | |
| tree | 3a8245484625a04eaa345c3d30338301df8c6e47 /drivers/mmc/dw_mmc.c | |
| parent | 2990e07a33159b1c23325c2c789cdb3f9ab4d89c (diff) | |
| download | u-boot-720724d09852858a3938f7bfcbbb3d1a0fdd6b4c.tar.xz | |
mmc: dw_mmc: fix data starvation by host timeout under FIFO mode
This patch fixes data starvation by host timeout(HTO) error interrupt
which occurred under FIFO mode transfer on rk3036 board.
The former implement, the actual bytes were transmitted may be less than
should be. The size will still subtract value of len in case of there is
no receive/transmit FIFO data request interrupt.
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Diffstat (limited to 'drivers/mmc/dw_mmc.c')
| -rw-r--r-- | drivers/mmc/dw_mmc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index a0a582b442..afc674dd14 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -119,6 +119,7 @@ static int dwmci_data_transfer(struct dwmci_host *host, struct mmc_data *data) } if (host->fifo_mode && size) { + len = 0; if (data->flags == MMC_DATA_READ) { if ((dwmci_readl(host, DWMCI_RINTSTS) & DWMCI_INTMSK_RXDR)) { |