Re: [PATCH v2] Prevent interrupt loop with DWMAC MMC RX IPC Counter

[Giuseppe CAVALLARO <peppe.cavallaro@st.com>]

On 2/15/2013 3:58 PM, Christian Ruppert wrote:
> If the DesignWare MAC is synthesised with MMC RX IPC Counter, an unmanaged
> and unacknowledged interrupt is generated after some time of operation.
>
> This patch masks the undesired interrupts.
>
> Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>

Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>

> ---
>   drivers/net/ethernet/stmicro/stmmac/mmc_core.c |    1 +
>   1 files changed, 1 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
> index 0c74a70..50617c5 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
> @@ -149,6 +149,7 @@ void dwmac_mmc_intr_all_mask(void __iomem *ioaddr)
>   {
>   	writel(MMC_DEFAULT_MASK, ioaddr + MMC_RX_INTR_MASK);
>   	writel(MMC_DEFAULT_MASK, ioaddr + MMC_TX_INTR_MASK);
> +	writel(MMC_DEFAULT_MASK, ioaddr + MMC_RX_IPC_INTR_MASK);
>   }
>
>   /* This reads the MAC core counters (if actaully supported).
>