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Input: sparcspkr - use device managed memory for 'state'

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Use devm_kzalloc() in bbc_bee_probe() and grover_beep_probe() to
automatically free 'state' when the device is removed. Drop the
kfree(state) calls from the probe error paths and the remove functions
accordingly.

Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20241021-input_automate_of_node_put-v3-1-cc73f636e1bc@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Javier Carrasco
2024-10-21 22:28:23 +02:00
committed by Dmitry Torokhov
parent 6951ec3f6e
commit ddefcd779e
1 changed files with 14 additions and 27 deletions
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41
drivers/input/misc/sparcspkr.c
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@@ -183,46 +183,39 @@ static int bbc_beep_probe(struct platform_device *op)
struct sparcspkr_state *state;
struct bbc_beep_info *info;
struct device_node *dp;
int err = -ENOMEM;
int err;
state = kzalloc(sizeof(*state), GFP_KERNEL);
state = devm_kzalloc(&op->dev, sizeof(*state), GFP_KERNEL);
if (!state)
goto out_err;
return -ENOMEM;
state->name = "Sparc BBC Speaker";
state->event = bbc_spkr_event;
spin_lock_init(&state->lock);
dp = of_find_node_by_path("/");
err = -ENODEV;
if (!dp)
goto out_free;
return -ENODEV;
info = &state->u.bbc;
info->clock_freq = of_getintprop_default(dp, "clock-frequency", 0);
of_node_put(dp);
if (!info->clock_freq)
goto out_free;
return -ENODEV;
info->regs = of_ioremap(&op->resource[0], 0, 6, "bbc beep");
if (!info->regs)
goto out_free;
return -ENODEV;
platform_set_drvdata(op, state);
err = sparcspkr_probe(&op->dev);
if (err)
goto out_clear_drvdata;
if (err) {
of_iounmap(&op->resource[0], info->regs, 6);
return err;
}
return 0;
out_clear_drvdata:
of_iounmap(&op->resource[0], info->regs, 6);
out_free:
kfree(state);
out_err:
return err;
}
static void bbc_remove(struct platform_device *op)
@@ -237,8 +230,6 @@ static void bbc_remove(struct platform_device *op)
input_unregister_device(input_dev);
of_iounmap(&op->resource[0], info->regs, 6);
kfree(state);
}
static const struct of_device_id bbc_beep_match[] = {
@@ -266,9 +257,9 @@ static int grover_beep_probe(struct platform_device *op)
struct grover_beep_info *info;
int err = -ENOMEM;
state = kzalloc(sizeof(*state), GFP_KERNEL);
state = devm_kzalloc(&op->dev, sizeof(*state), GFP_KERNEL);
if (!state)
goto out_err;
return err;
state->name = "Sparc Grover Speaker";
state->event = grover_spkr_event;
@@ -277,7 +268,7 @@ static int grover_beep_probe(struct platform_device *op)
info = &state->u.grover;
info->freq_regs = of_ioremap(&op->resource[2], 0, 2, "grover beep freq");
if (!info->freq_regs)
goto out_free;
return err;
info->enable_reg = of_ioremap(&op->resource[3], 0, 1, "grover beep enable");
if (!info->enable_reg)
@@ -296,9 +287,7 @@ out_clear_drvdata:
out_unmap_freq_regs:
of_iounmap(&op->resource[2], info->freq_regs, 2);
out_free:
kfree(state);
out_err:
return err;
}
@@ -315,8 +304,6 @@ static void grover_remove(struct platform_device *op)
of_iounmap(&op->resource[3], info->enable_reg, 1);
of_iounmap(&op->resource[2], info->freq_regs, 2);
kfree(state);
}
static const struct of_device_id grover_beep_match[] = {