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Input: soc_button_array - fix leaking the ACPI button descriptor buffer 

We are passing a buffer with ACPI_ALLOCATE_BUFFER set to
acpi_evaluate_object, so we must free it when we are done with it.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Hans de Goede 2017-06-18 15:10:26 -07:00 committed by Dmitry Torokhov
parent a0897d5f2c
commit 779f19ac9d
1 changed files with 14 additions and 6 deletions
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20
drivers/input/misc/soc_button_array.c
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@ -248,7 +248,8 @@ static struct soc_button_info *soc_button_get_button_info(struct device *dev)
if (!btns_desc) {
dev_err(dev, "ACPI Button Descriptors not found\n");
return ERR_PTR(-ENODEV);
button_info = ERR_PTR(-ENODEV);
goto out;
}
/* The first package describes the collection */
@ -264,24 +265,31 @@ static struct soc_button_info *soc_button_get_button_info(struct device *dev)
}
if (collection_uid == -1) {
dev_err(dev, "Invalid Button Collection Descriptor\n");
return ERR_PTR(-ENODEV);
button_info = ERR_PTR(-ENODEV);
goto out;
}
/* There are package.count - 1 buttons + 1 terminating empty entry */
button_info = devm_kcalloc(dev, btns_desc->package.count,
sizeof(*button_info), GFP_KERNEL);
if (!button_info)
return ERR_PTR(-ENOMEM);
if (!button_info) {
button_info = ERR_PTR(-ENOMEM);
goto out;
}
/* Parse the button descriptors */
for (i = 1, btn = 0; i < btns_desc->package.count; i++, btn++) {
if (soc_button_parse_btn_desc(dev,
&btns_desc->package.elements[i],
collection_uid,
&button_info[btn]))
return ERR_PTR(-ENODEV);
&button_info[btn])) {
button_info = ERR_PTR(-ENODEV);
goto out;
}
}
out:
kfree(buf.pointer);
return button_info;
}