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authorGravatar Andrew Davis <afd@ti.com> 2024-02-08 10:51:12 -0600
committerGravatar Bjorn Andersson <andersson@kernel.org> 2024-03-05 20:01:14 -0800
commit25f7d74d451484fc09772fc276b161d1a6bc64b6 (patch)
treed37ac319b7de225d4a85b1bdea7f85c627cb5af2 /drivers/hwspinlock
parenthwspinlock: omap: Remove unneeded check for OF node (diff)
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hwspinlock: omap: Use devm_pm_runtime_enable() helper
This disables runtime PM on module exit automatically for us, currently we manually disable runtime PM which can be error-prone if not done in the right order or missed in some exit path. This also allows us to simplify the probe exit path and remove callbacks. Do that here. While here, as we can now return right after registering our hwspinlock, simply return directly and remove the extra debug message. Signed-off-by: Andrew Davis <afd@ti.com> Link: https://lore.kernel.org/r/20240208165114.63148-2-afd@ti.com Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Diffstat (limited to 'drivers/hwspinlock')
-rw-r--r--drivers/hwspinlock/omap_hwspinlock.c33
1 files changed, 8 insertions, 25 deletions
diff --git a/drivers/hwspinlock/omap_hwspinlock.c b/drivers/hwspinlock/omap_hwspinlock.c
index cca55143d24d..3bd3ffab9210 100644
--- a/drivers/hwspinlock/omap_hwspinlock.c
+++ b/drivers/hwspinlock/omap_hwspinlock.c
@@ -89,10 +89,10 @@ static int omap_hwspinlock_probe(struct platform_device *pdev)
* make sure the module is enabled and clocked before reading
* the module SYSSTATUS register
*/
- pm_runtime_enable(&pdev->dev);
+ devm_pm_runtime_enable(&pdev->dev);
ret = pm_runtime_resume_and_get(&pdev->dev);
if (ret < 0)
- goto runtime_err;
+ return ret;
/* Determine number of locks */
i = readl(io_base + SYSSTATUS_OFFSET);
@@ -104,41 +104,26 @@ static int omap_hwspinlock_probe(struct platform_device *pdev)
*/
ret = pm_runtime_put(&pdev->dev);
if (ret < 0)
- goto runtime_err;
+ return ret;
/* one of the four lsb's must be set, and nothing else */
- if (hweight_long(i & 0xf) != 1 || i > 8) {
- ret = -EINVAL;
- goto runtime_err;
- }
+ if (hweight_long(i & 0xf) != 1 || i > 8)
+ return -EINVAL;
num_locks = i * 32; /* actual number of locks in this device */
bank = devm_kzalloc(&pdev->dev, struct_size(bank, lock, num_locks),
GFP_KERNEL);
- if (!bank) {
- ret = -ENOMEM;
- goto runtime_err;
- }
+ if (!bank)
+ return -ENOMEM;
platform_set_drvdata(pdev, bank);
for (i = 0, hwlock = &bank->lock[0]; i < num_locks; i++, hwlock++)
hwlock->priv = io_base + LOCK_BASE_OFFSET + sizeof(u32) * i;
- ret = hwspin_lock_register(bank, &pdev->dev, &omap_hwspinlock_ops,
+ return hwspin_lock_register(bank, &pdev->dev, &omap_hwspinlock_ops,
base_id, num_locks);
- if (ret)
- goto runtime_err;
-
- dev_dbg(&pdev->dev, "Registered %d locks with HwSpinlock core\n",
- num_locks);
-
- return 0;
-
-runtime_err:
- pm_runtime_disable(&pdev->dev);
- return ret;
}
static void omap_hwspinlock_remove(struct platform_device *pdev)
@@ -151,8 +136,6 @@ static void omap_hwspinlock_remove(struct platform_device *pdev)
dev_err(&pdev->dev, "%s failed: %d\n", __func__, ret);
return;
}
-
- pm_runtime_disable(&pdev->dev);
}
static const struct of_device_id omap_hwspinlock_of_match[] = {