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clocksource/drivers/clps711x: Do not unmap clocksource MMIO

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clps711x_clksrc_init() stores the timer base address in the static tcd
pointer and registers it as both the clocksource MMIO address and the
sched_clock read address.

The clocksource init path must therefore keep the mapping alive after
clps711x_timer_init() returns. However, the shared unmap_io exit path is
also reached after successful clocksource registration, so the MMIO
mapping is torn down while the clocksource and sched_clock readers may
still access it.

Return directly after successful clocksource registration and leave the
mapping alive for the registered readers. Keep the unmap_io path for the
error paths and for the clockevent init path.

Fixes: cd32e596f0 ("clocksource/drivers/clps711x: Fix resource leaks in error paths")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Link: https://patch.msgid.link/20260704175451.256364-1-lgs201920130244@gmail.com
This commit is contained in:
Guangshuo Li 2026-07-05 01:54:51 +08:00 committed by Daniel Lezcano
parent 05520e035f
commit e998c6300e
1 changed files with 1 additions and 1 deletions
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2
drivers/clocksource/clps711x-timer.c
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@ -94,7 +94,7 @@ static int __init clps711x_timer_init(struct device_node *np)
switch (of_alias_get_id(np, "timer")) {
case CLPS711X_CLKSRC_CLOCKSOURCE:
clps711x_clksrc_init(clock, base);
break;
return 0;
case CLPS711X_CLKSRC_CLOCKEVENT:
ret = _clps711x_clkevt_init(clock, base, irq);
break;