[PATCH v2 2/3] pinctrl: single: Allow probe to continue if mem region busy
From: Billy Tsai <hidden>
Date: 2026-01-23 03:46:56
Also in:
linux-gpio, linux-omap, lkml
Subsystem:
pin control subsystem, pin controller - single, the rest · Maintainers:
Linus Walleij, Tony Lindgren, Haojian Zhuang, Linus Torvalds
Skip exclusive memory region reservation failure during probe and continue initialization with a warning. This enables support for systems where the memory region may already be reserved, improving probe robustness. Signed-off-by: Billy Tsai <redacted> --- drivers/pinctrl/pinctrl-single.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index 757c22cc09f3..e65ae737b4c5 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c@@ -1910,13 +1910,13 @@ static int pcs_probe(struct platform_device *pdev) pcs->res = devm_request_mem_region(pcs->dev, res->start, resource_size(res), DRIVER_NAME); - if (!pcs->res) { - dev_err(pcs->dev, "could not get mem_region\n"); - return -EBUSY; - } + if (!pcs->res) + dev_warn(pcs->dev, "mem_region busy, continuing without reservation\n"); + else + res = pcs->res; - pcs->size = resource_size(pcs->res); - pcs->base = devm_ioremap(pcs->dev, pcs->res->start, pcs->size); + pcs->size = resource_size(res); + pcs->base = devm_ioremap(pcs->dev, res->start, pcs->size); if (!pcs->base) { dev_err(pcs->dev, "could not ioremap\n"); return -ENODEV;
--
2.34.1