From: Sean Wang Date: Thu, 1 Sep 2016 02:47:32 +0000 (+0800) Subject: net: ethernet: mediatek: fix issue of driver removal with interface is up X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=79e9a41438527a4cc2b426a2dfb92cd0825d7d29;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git net: ethernet: mediatek: fix issue of driver removal with interface is up mtk_stop() must be called to stop for freeing DMA resources acquired and restoring state changed by mtk_open() firstly when module removal. Signed-off-by: Sean Wang Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index bf5b7e1d9450..556951e66978 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1906,6 +1906,14 @@ err_free_dev: static int mtk_remove(struct platform_device *pdev) { struct mtk_eth *eth = platform_get_drvdata(pdev); + int i; + + /* stop all devices to make sure that dma is properly shut down */ + for (i = 0; i < MTK_MAC_COUNT; i++) { + if (!eth->netdev[i]) + continue; + mtk_stop(eth->netdev[i]); + } clk_disable_unprepare(eth->clks[MTK_CLK_ETHIF]); clk_disable_unprepare(eth->clks[MTK_CLK_ESW]);