This patch moves data allocated using kzalloc to managed data allocated
using devm_kzalloc and cleans now unnecessary kfrees in probe and remove
functions. This data is the third argument to da9052_request_irq in the
two cases below.
The following Coccinelle semantic patch was used for making the change:
@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
.probe = probefn,
.remove = removefn,
};
@prb@
identifier platform.probefn, pdev;
expression e, e1, e2;
@@
probefn(struct platform_device *pdev, ...) {
<+...
- e = kzalloc(e1, e2)
+ e = devm_kzalloc(&pdev->dev, e1, e2)
...
?-kfree(e);
...+>
}
@rem depends on prb@
identifier platform.removefn;
expression e;
@@
removefn(...) {
<...
- kfree(e);
...>
}
Signed-off-by: Himangi Saraogi <himangi...@gmail.com>
Acked-by: Julia Lawall <julia.law...@lip6.fr>
---
As a follow up patch I would like to know if it would be desirable to
modify request_threaded_irq to devm_request_threaded_irq in the helper
function da9052_request_irq :
int da9052_request_irq(struct da9052 *da9052, int irq, char *name,
irq_handler_t handler, void *data)
{
irq = da9052_map_irq(da9052, irq);
if (irq < 0)
return irq;
return request_threaded_irq(irq, NULL, handler,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
name, data);
}
drivers/input/misc/da9052_onkey.c | 4 +---
drivers/input/touchscreen/da9052_tsi.c | 4 +---
2 files changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/input/misc/da9052_onkey.c
b/drivers/input/misc/da9052_onkey.c
index 184c8f2..6fc8243 100644
--- a/drivers/input/misc/da9052_onkey.c
+++ b/drivers/input/misc/da9052_onkey.c
@@ -84,7 +84,7 @@ static int da9052_onkey_probe(struct platform_device *pdev)
return -EINVAL;
}
- onkey = kzalloc(sizeof(*onkey), GFP_KERNEL);
+ onkey = devm_kzalloc(&pdev->dev, sizeof(*onkey), GFP_KERNEL);
input_dev = input_allocate_device();
if (!onkey || !input_dev) {
dev_err(&pdev->dev, "Failed to allocate memory\n");
@@ -126,7 +126,6 @@ err_free_irq:
cancel_delayed_work_sync(&onkey->work);
err_free_mem:
input_free_device(input_dev);
- kfree(onkey);
return error;
}
@@ -139,7 +138,6 @@ static int da9052_onkey_remove(struct platform_device *pdev)
cancel_delayed_work_sync(&onkey->work);
input_unregister_device(onkey->input);
- kfree(onkey);
return 0;
}
diff --git a/drivers/input/touchscreen/da9052_tsi.c
b/drivers/input/touchscreen/da9052_tsi.c
index ab64d58..dff6a2e 100644
--- a/drivers/input/touchscreen/da9052_tsi.c
+++ b/drivers/input/touchscreen/da9052_tsi.c
@@ -238,7 +238,7 @@ static int da9052_ts_probe(struct platform_device *pdev)
if (!da9052)
return -EINVAL;
- tsi = kzalloc(sizeof(struct da9052_tsi), GFP_KERNEL);
+ tsi = devm_kzalloc(&pdev->dev, sizeof(struct da9052_tsi), GFP_KERNEL);
input_dev = input_allocate_device();
if (!tsi || !input_dev) {
error = -ENOMEM;
@@ -311,7 +311,6 @@ err_free_datardy_irq:
err_free_pendwn_irq:
da9052_free_irq(tsi->da9052, DA9052_IRQ_PENDOWN, tsi);
err_free_mem:
- kfree(tsi);
input_free_device(input_dev);
return error;
@@ -327,7 +326,6 @@ static int da9052_ts_remove(struct platform_device *pdev)
da9052_free_irq(tsi->da9052, DA9052_IRQ_PENDOWN, tsi);
input_unregister_device(tsi->dev);
- kfree(tsi);
return 0;
}
--
1.9.1
--
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