Merge tag 'efi-2020-10-rc3-3' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi

Pull request for UEFI sub-system for efi-2020-10-rc3 (3)

The following bug fixes are contained in this pull-request:

* ResetSystem() should no hang if not implemented.
* Device paths in Bootxxxx variables should be verified.
* Use ':' as separator for command setenv -e -i instead of ','.
* Correct comments for functions.
* Update UEFI documentation.

include/efi_loader.h

@@ -631,6 +631,8 @@ efi_status_t efi_dp_from_name(const char *dev, const char *devnr,
 			      const char *path,
 			      struct efi_device_path **device,
 			      struct efi_device_path **file);
+ssize_t efi_dp_check_length(const struct efi_device_path *dp,
+			    const size_t maxlen);
 
 #define EFI_DP_TYPE(_dp, _type, _subtype) \
 	(((_dp)->type == DEVICE_PATH_TYPE_##_type) && \

include/efi_variable.h

@@ -274,7 +274,6 @@ efi_get_next_variable_name_mem(efi_uintn_t *variable_name_size, u16 *variable_na
  * @data:		buffer to which the variable value is copied
  * @timep:		authentication time (seconds since start of epoch)
  * Return:		status code
-
  */
 efi_status_t __efi_runtime
 efi_get_variable_mem(u16 *variable_name, const efi_guid_t *vendor, u32 *attributes,

include/linux/kernel.h

@@ -19,6 +19,9 @@
 #ifndef SIZE_MAX
 #define SIZE_MAX	(~(size_t)0)
 #endif
+#ifndef SSIZE_MAX
+#define SSIZE_MAX	((ssize_t)(SIZE_MAX >> 1))
+#endif
 
 #define U8_MAX		((u8)~0U)
 #define S8_MAX		((s8)(U8_MAX>>1))