Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI: EC: Limit burst to 64 bits
+11
-6
+11
-6
drivers/acpi/acpica/exprep.c
+11
-6
drivers/acpi/acpica/exprep.c
···
471
471
/* allow full data read from EC address space */
472
472
if (obj_desc->field.region_obj->region.space_id ==
473
473
ACPI_ADR_SPACE_EC) {
474
-
if (obj_desc->common_field.bit_length > 8)
475
-
obj_desc->common_field.access_bit_width =
476
-
ACPI_ROUND_UP(obj_desc->common_field.
477
-
bit_length, 8);
474
+
if (obj_desc->common_field.bit_length > 8) {
475
+
unsigned width =
476
+
ACPI_ROUND_BITS_UP_TO_BYTES(
477
+
obj_desc->common_field.bit_length);
478
+
// access_bit_width is u8, don't overflow it
479
+
if (width > 8)
480
+
width = 8;
478
481
obj_desc->common_field.access_byte_width =
479
-
ACPI_DIV_8(obj_desc->common_field.
480
-
access_bit_width);
482
+
width;
483
+
obj_desc->common_field.access_bit_width =
484
+
8 * width;
485
+
}
481
486
}
482
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483
488
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,