5.4-stable review patch. If anyone has any objections, please let me know.
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From: Zhen Ni zhen.ni@easystack.cn
commit cd32e596f02fc981674573402c1138f616df1728 upstream.
The current implementation of clps711x_timer_init() has multiple error paths that directly return without releasing the base I/O memory mapped via of_iomap(). Fix of_iomap leaks in error paths.
Fixes: 04410efbb6bc ("clocksource/drivers/clps711x: Convert init function to return error") Fixes: 2a6a8e2d9004 ("clocksource/drivers/clps711x: Remove board support") Signed-off-by: Zhen Ni zhen.ni@easystack.cn Signed-off-by: Daniel Lezcano daniel.lezcano@linaro.org Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20250814123324.1516495-1-zhen.ni@easystack.cn Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/clocksource/clps711x-timer.c | 23 ++++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-)
--- a/drivers/clocksource/clps711x-timer.c +++ b/drivers/clocksource/clps711x-timer.c @@ -78,24 +78,33 @@ static int __init clps711x_timer_init(st unsigned int irq = irq_of_parse_and_map(np, 0); struct clk *clock = of_clk_get(np, 0); void __iomem *base = of_iomap(np, 0); + int ret = 0;
if (!base) return -ENOMEM; - if (!irq) - return -EINVAL; - if (IS_ERR(clock)) - return PTR_ERR(clock); + if (!irq) { + ret = -EINVAL; + goto unmap_io; + } + if (IS_ERR(clock)) { + ret = PTR_ERR(clock); + goto unmap_io; + }
switch (of_alias_get_id(np, "timer")) { case CLPS711X_CLKSRC_CLOCKSOURCE: clps711x_clksrc_init(clock, base); break; case CLPS711X_CLKSRC_CLOCKEVENT: - return _clps711x_clkevt_init(clock, base, irq); + ret = _clps711x_clkevt_init(clock, base, irq); + break; default: - return -EINVAL; + ret = -EINVAL; + break; }
- return 0; +unmap_io: + iounmap(base); + return ret; } TIMER_OF_DECLARE(clps711x, "cirrus,ep7209-timer", clps711x_timer_init);