Acked-by: Jaehoon Chung <[email protected]> On 05/23/2013 10:15 PM, Rajeshwari Shinde wrote: > Current DWMMC driver used to give FIFO underrun/overrun error every 3rd time > for mmc rescan command. > In current code FIFO_DEPTH is getting calculated after reading the FIFOTH > register and extracting the RX_WMARK bits from it i.e (RX_WMARK = > FIFO_DEPTH/2 -1). > Instead of storing the correct value, we were recalculating the FIFO_DEPT each > time which is not correct. > > Signed-off-by: Hatim Ali <[email protected]> > Signed-off-by: Rajeshwari Shinde <[email protected]> > --- > drivers/mmc/dw_mmc.c | 6 ++++-- > 1 files changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c > index 4070d4e..be590a4 100644 > --- a/drivers/mmc/dw_mmc.c > +++ b/drivers/mmc/dw_mmc.c > @@ -332,11 +332,13 @@ static int dwmci_init(struct mmc *mmc) > dwmci_writel(host, DWMCI_BMOD, 1); > > fifo_size = dwmci_readl(host, DWMCI_FIFOTH); > - if (host->fifoth_val) > + if (host->fifoth_val) { > fifoth_val = host->fifoth_val; > - else > + } else { > fifoth_val = MSIZE(0x2) | RX_WMARK(fifo_size/2 -1) | > TX_WMARK(fifo_size/2); > + host->fifoth_val = fifoth_val; > + } > dwmci_writel(host, DWMCI_FIFOTH, fifoth_val); > > dwmci_writel(host, DWMCI_CLKENA, 0); >
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