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ACPI: APD: Check for NULL pointer after calling devm_ioremap()
Because devres_alloc() may fail, devm_ioremap() may return NULL.
Then, 'clk_data->base' will be assigned to clkdev->data->base in
platform_device_register_data().
The PTR_ERR_OR_ZERO() check on clk_data does not cover 'base', so
it is better to add an explicit check against NULL after updating
it.
Fixes: 3f4ba94e36
("ACPI: APD: Add AMD misc clock handler support")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
[ rjw: Changelog rewrite ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
parent
bca21755b9
commit
2cea3ec5b0
@ -95,6 +95,8 @@ static int fch_misc_setup(struct apd_private_data *pdata)
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resource_size(rentry->res));
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break;
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}
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if (!clk_data->base)
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return -ENOMEM;
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acpi_dev_free_resource_list(&resource_list);
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