diff options
| author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2025-08-08 13:16:39 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-08-11 20:11:48 -0700 |
| commit | 89886abd073489e26614e4d80fb8eb70d3938a0b (patch) | |
| tree | 70e56cf5cad4d8973b3fcbc2921f1c8efc797978 | |
| parent | de1e963ad064caf73ee2c7485b925f381a3aefbf (diff) | |
net: stmmac: dwc-qos: fix clk prepare/enable leak on probe failure
dwc_eth_dwmac_probe() gets bulk clocks, and then prepares and enables
them. Unfortunately, if dwc_eth_dwmac_config_dt() or stmmac_dvr_probe()
fail, we leave the clocks prepared and enabled. Fix this by using
devm_clk_bulk_get_all_enabled() to combine the steps and provide devm
based release of the prepare and enable state.
This also fixes a similar leakin dwc_eth_dwmac_remove() which wasn't
correctly retrieving the struct plat_stmmacenet_data. This becomes
unnecessary.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: a045e40645df ("net: stmmac: refactor clock management in EQoS driver")
Link: https://patch.msgid.link/E1ukM1X-0086qu-Td@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c index 09ae16e026eb..6c363f9b0ce2 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c @@ -330,15 +330,11 @@ static int dwc_eth_dwmac_probe(struct platform_device *pdev) if (IS_ERR(plat_dat)) return PTR_ERR(plat_dat); - ret = devm_clk_bulk_get_all(&pdev->dev, &plat_dat->clks); + ret = devm_clk_bulk_get_all_enabled(&pdev->dev, &plat_dat->clks); if (ret < 0) - return dev_err_probe(&pdev->dev, ret, "Failed to retrieve all required clocks\n"); + return dev_err_probe(&pdev->dev, ret, "Failed to retrieve and enable all required clocks\n"); plat_dat->num_clks = ret; - ret = clk_bulk_prepare_enable(plat_dat->num_clks, plat_dat->clks); - if (ret) - return dev_err_probe(&pdev->dev, ret, "Failed to enable clocks\n"); - plat_dat->stmmac_clk = stmmac_pltfr_find_clk(plat_dat, data->stmmac_clk_name); @@ -346,7 +342,6 @@ static int dwc_eth_dwmac_probe(struct platform_device *pdev) ret = data->probe(pdev, plat_dat, &stmmac_res); if (ret < 0) { dev_err_probe(&pdev->dev, ret, "failed to probe subdriver\n"); - clk_bulk_disable_unprepare(plat_dat->num_clks, plat_dat->clks); return ret; } @@ -370,15 +365,11 @@ remove: static void dwc_eth_dwmac_remove(struct platform_device *pdev) { const struct dwc_eth_dwmac_data *data = device_get_match_data(&pdev->dev); - struct plat_stmmacenet_data *plat_dat = dev_get_platdata(&pdev->dev); stmmac_dvr_remove(&pdev->dev); if (data->remove) data->remove(pdev); - - if (plat_dat) - clk_bulk_disable_unprepare(plat_dat->num_clks, plat_dat->clks); } static const struct of_device_id dwc_eth_dwmac_match[] = { |