efivars: add missing parameter to efi_pstore_read()
In the case where CONFIG_PSTORE=n, the function efi_pstore_read() doesn't have the correct list of parameters. This patch provides a definition of efi_pstore_read() with 'char **buf' added to fix this warning: "drivers/firmware/efivars.c:609: warning: initialization from". problem introduced in commit f6f82851Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
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