github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-10-04 18:29:02 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

net: ethernet: stmmac: dwmac-rk: fix bulk clock leak when the PHY clock fails

Browse Source 
gmac_clk_enable() enables the bulk clocks first and then the optional
PHY clock. If clk_prepare_enable() on the PHY clock fails, the function
returns without rolling back the bulk clocks, and bsp_priv->clk_enabled
stays false, so the later gmac_clk_enable(bsp_priv, false) becomes a
no-op and the bulk clock references are leaked.

Add the missing clk_bulk_disable_unprepare() on that failure path.

Fixes: ea449f7fa0 ("net: ethernet: stmmac: dwmac-rk: rework optional clock handling")
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Lorenzo Bianconi <lorenzo.bianconi@oss.qualcomm.com>
Signed-off-by: Coia Prant <coiaprant@gmail.com>
Link: https://patch.msgid.link/20260923123713.3137146-1-coiaprant@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Coia Prant 2026-09-23 20:37:13 +08:00 committed by Jakub Kicinski
parent 56d82862a0
commit 8db67bb6a1
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
View File

@ -1162,8 +1162,11 @@ static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable)
return ret;
ret = clk_prepare_enable(bsp_priv->clk_phy);
if (ret)
if (ret) {
clk_bulk_disable_unprepare(bsp_priv->num_clks,
bsp_priv->clks);
return ret;
}
rk_configure_io_clksel(bsp_priv);
rk_ungate_rmii_clock(bsp_priv);