3 files changed, 10 insertions, 6 deletions

diff --git a/drivers/acpi/tables/tbconvrt.c b/drivers/acpi/tables/tbconvrt.c
index a03939399fa9..cd33397d9231 100644
--- a/drivers/acpi/tables/tbconvrt.c
+++ b/drivers/acpi/tables/tbconvrt.c
@@ -554,7 +554,9 @@ acpi_status acpi_tb_convert_table_fadt(void)
         ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
                           "Hex dump of common internal FADT, size %d (%X)\n",
                           acpi_gbl_FADT->length, acpi_gbl_FADT->length));
-        ACPI_DUMP_BUFFER((u8 *) (acpi_gbl_FADT), acpi_gbl_FADT->length);
+
+        ACPI_DUMP_BUFFER(ACPI_CAST_PTR(u8, acpi_gbl_FADT),
+                         acpi_gbl_FADT->length);
 
         return_ACPI_STATUS(AE_OK);
 }
diff --git a/drivers/acpi/tables/tbgetall.c b/drivers/acpi/tables/tbgetall.c
index 8d72343537e7..33c9ed8a6f99 100644
--- a/drivers/acpi/tables/tbgetall.c
+++ b/drivers/acpi/tables/tbgetall.c
@@ -292,7 +292,9 @@ acpi_status acpi_tb_get_required_tables(void)
                           "Hex dump of entire DSDT, size %d (0x%X), Integer width = %d\n",
                           acpi_gbl_DSDT->length, acpi_gbl_DSDT->length,
                           acpi_gbl_integer_bit_width));
-        ACPI_DUMP_BUFFER((u8 *) acpi_gbl_DSDT, acpi_gbl_DSDT->length);
+
+        ACPI_DUMP_BUFFER(ACPI_CAST_PTR(u8, acpi_gbl_DSDT),
+                         acpi_gbl_DSDT->length);
 
         /* Always delete the RSDP mapping, we are done with it */
 
diff --git a/drivers/acpi/tables/tbutils.c b/drivers/acpi/tables/tbutils.c
index e6dfe688b76b..9d0bf536d674 100644
--- a/drivers/acpi/tables/tbutils.c
+++ b/drivers/acpi/tables/tbutils.c
@@ -240,16 +240,16 @@ acpi_tb_verify_table_checksum(struct acpi_table_header * table_header)
 
 u8 acpi_tb_generate_checksum(void *buffer, u32 length)
 {
-        const u8 *limit;
-        const u8 *rover;
+        u8 *end_buffer;
+        u8 *rover;
         u8 sum = 0;
 
         if (buffer && length) {
                 /*  Buffer and Length are valid   */
 
-                limit = (u8 *) buffer + length;
+                end_buffer = ACPI_ADD_PTR(u8, buffer, length);
 
-                for (rover = buffer; rover < limit; rover++) {
+                for (rover = buffer; rover < end_buffer; rover++) {
                         sum = (u8) (sum + *rover);
                 }
         }