clocksource/drivers/renesas-ostm: Unconditionally enable reprobe support

Previously, the OSTM driver's platform probe path was only enabled for
selected SoCs (e.g., RZ/G2L and RZ/V2H) due to issues on RZ/Ax (ARM32)
SoCs, which encountered IRQ conflicts like:

    /soc/timer@e803b000: used for clock events
    genirq: Flags mismatch irq 16. 00215201 (timer@e803c000) vs. 00215201 (timer@e803c000)
    Failed to request irq 16 for /soc/timer@e803c000
    renesas_ostm e803c000.timer: probe with driver renesas_ostm failed with error -16

These issues have since been resolved by commit 37385c0772a4
("clocksource/drivers/renesas-ostm: Avoid reprobe after successful early
probe"), which prevents reprobe on successfully initialized early timers.

With this fix in place, there is no longer a need to restrict platform
probing based on SoC-specific configs. This change unconditionally enables
reprobe support for all SoCs, simplifying the logic and avoiding the need
to update the configuration for every new Renesas SoC with OSTM.

Additionally, the `ostm_of_table` is now marked with `__maybe_unused` to
fix a build warning when `CONFIG_OF` is disabled.

RZ/A1 and RZ/A2 remain unaffected with this change.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20250515182207.329176-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

diff --git a/drivers/clocksource/renesas-ostm.c b/drivers/clocksource/renesas-ostm.c
index 3fcbd02b24831dafee9ddc10a2408f49dbe276aa..2089aeaae2256491f8b29318e2e762b707902c2f 100644 (file)
--- a/drivers/clocksource/renesas-ostm.c
+++ b/drivers/clocksource/renesas-ostm.c
@@ -225,7 +225,6 @@ err_free:
 
 TIMER_OF_DECLARE(ostm, "renesas,ostm", ostm_init);
 
-#if defined(CONFIG_ARCH_RZG2L) || defined(CONFIG_ARCH_R9A09G057)
 static int __init ostm_probe(struct platform_device *pdev)
 {
        struct device *dev = &pdev->dev;
@@ -233,7 +232,7 @@ static int __init ostm_probe(struct platform_device *pdev)
        return ostm_init(dev->of_node);
 }
 
-static const struct of_device_id ostm_of_table[] = {
+static const struct of_device_id __maybe_unused ostm_of_table[] = {
        { .compatible = "renesas,ostm", },
        { /* sentinel */ }
 };
@@ -246,4 +245,3 @@ static struct platform_driver ostm_device_driver = {
        },
 };
 builtin_platform_driver_probe(ostm_device_driver, ostm_probe);
-#endif