From: Sebastian Reichel Date: Tue, 14 Oct 2025 15:49:34 +0000 (+0200) Subject: net: stmmac: dwmac-rk: Fix disabling set_clock_selection X-Git-Tag: v6.12.56~58 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=427f24b9f677927585de7cce6b22b1d551123e1b;p=thirdparty%2Fkernel%2Fstable.git net: stmmac: dwmac-rk: Fix disabling set_clock_selection commit 7f864458e9a6d2000b726d14b3d3a706ac92a3b0 upstream. On all platforms set_clock_selection() writes to a GRF register. This requires certain clocks running and thus should happen before the clocks are disabled. This has been noticed on RK3576 Sige5, which hangs during system suspend when trying to suspend the second network interface. Note, that suspending the first interface works, because the second device ensures that the necessary clocks for the GRF are enabled. Cc: stable@vger.kernel.org Fixes: 2f2b60a0ec28 ("net: ethernet: stmmac: dwmac-rk: Add gmac support for rk3588") Signed-off-by: Sebastian Reichel Reviewed-by: Simon Horman Link: https://patch.msgid.link/20251014-rockchip-network-clock-fix-v1-1-c257b4afdf75@collabora.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c index 8f90eae937741..d152afa48d5c2 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c @@ -1721,14 +1721,15 @@ static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable) } } else { if (bsp_priv->clk_enabled) { + if (bsp_priv->ops && bsp_priv->ops->set_clock_selection) { + bsp_priv->ops->set_clock_selection(bsp_priv, + bsp_priv->clock_input, false); + } + clk_bulk_disable_unprepare(bsp_priv->num_clks, bsp_priv->clks); clk_disable_unprepare(bsp_priv->clk_phy); - if (bsp_priv->ops && bsp_priv->ops->set_clock_selection) - bsp_priv->ops->set_clock_selection(bsp_priv, - bsp_priv->clock_input, false); - bsp_priv->clk_enabled = false; } }