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Subject[PATCH 2/2] pinctrl: core: Hold pctldev->mutex mutex lock while traversing gpio_ranges list
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Hold pctldev->mutex mutex_lock when traverse the list.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
drivers/pinctrl/core.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index c670527..4adef2f 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -357,14 +357,17 @@ static bool pinctrl_ready_for_gpio_range(unsigned gpio)
/* Loop over the pin controllers */
list_for_each_entry(pctldev, &pinctrldev_list, node) {
/* Loop over the ranges */
+ mutex_lock(&pctldev->mutex);
list_for_each_entry(range, &pctldev->gpio_ranges, node) {
/* Check if any gpio range overlapped with gpio chip */
if (range->base + range->npins - 1 < chip->base ||
range->base > chip->base + chip->ngpio - 1)
continue;
+ mutex_unlock(&pctldev->mutex);
mutex_unlock(&pinctrldev_list_mutex);
return true;
}
+ mutex_unlock(&pctldev->mutex);
}

mutex_unlock(&pinctrldev_list_mutex);
--
1.8.1.2




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