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Use of strcat() against an uninitialized buffer would lead to buffer overflow. This patch fixes it. Fixes: 694cd561 ("IOMUX: Introduce iomux_replace_device()") Signed-off-by: Yuichiro Goto <goto@k-tech.co.jp> Cc: Peter Robinson <pbrobinson@gmail.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Peter Robinson <pbrobinson@gmail.com>
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