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Date: Mon, 18 Sep 2017 20:30:43 +0200 From: Corentin Labbe <clabbe.montjoie@...il.com> To: peppe.cavallaro@...com, alexandre.torgue@...com, maxime.ripard@...e-electrons.com, wens@...e.org Cc: netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, Corentin Labbe <clabbe.montjoie@...il.com> Subject: [PATCH v2] net: stmmac: dwmac-sun8i: Use reset exclusive The current dwmac_sun8i module cannot be rmmod/modprobe due to that the reset controller was not released when removed. This patch remove ambiguity, by using of_reset_control_get_exclusive and add the missing reset_control_put(). Note that we cannot use devm_reset_control_get, since the reset is not in the device node. Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com> --- Changes since v1: - added a note about devm_reset_control_get in commit message drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c index 57bb6dd7b401..1736d7cb0d96 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c @@ -854,6 +854,7 @@ static int sun8i_dwmac_unpower_internal_phy(struct sunxi_priv_data *gmac) clk_disable_unprepare(gmac->ephy_clk); reset_control_assert(gmac->rst_ephy); + reset_control_put(gmac->rst_ephy); return 0; } @@ -1010,7 +1011,7 @@ static int sun8i_dwmac_probe(struct platform_device *pdev) return -EINVAL; } - gmac->rst_ephy = of_reset_control_get(plat_dat->phy_node, NULL); + gmac->rst_ephy = of_reset_control_get_exclusive(plat_dat->phy_node, NULL); if (IS_ERR(gmac->rst_ephy)) { ret = PTR_ERR(gmac->rst_ephy); if (ret == -EPROBE_DEFER) -- 2.13.5
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