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[ACPI] fix EC access width

Browse source 
http://bugzilla.kernel.org/show_bug.cgi?id=4346

Written-by: David Shaohua Li and Luming Yu
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Luming Yu 2005-03-19 01:54:47 -05:00 committed by Len Brown
parent 451566f45a
commit fa9cd547e0
1 changed files with 14 additions and 18 deletions
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32
drivers/acpi/ec.c
View file

@ -600,7 +600,7 @@ acpi_ec_space_handler (
{
int result = 0;
struct acpi_ec *ec = NULL;
u32 temp = 0;
u64 temp = *value;
acpi_integer f_v = 0;
int i = 0;
@ -609,10 +609,9 @@ acpi_ec_space_handler (
if ((address > 0xFF) || !value || !handler_context)
return_VALUE(AE_BAD_PARAMETER);
if(bit_width != 8) {
if (bit_width != 8 && acpi_strict) {
printk(KERN_WARNING PREFIX "acpi_ec_space_handler: bit_width should be 8\n");
if (acpi_strict)
return_VALUE(AE_BAD_PARAMETER);
return_VALUE(AE_BAD_PARAMETER);
}
ec = (struct acpi_ec *) handler_context;
@ -620,11 +619,11 @@ acpi_ec_space_handler (
next_byte:
switch (function) {
case ACPI_READ:
result = acpi_ec_read(ec, (u8) address, &temp);
*value = (acpi_integer) temp;
temp = 0;
result = acpi_ec_read(ec, (u8) address, (u32 *)&temp);
break;
case ACPI_WRITE:
result = acpi_ec_write(ec, (u8) address, (u8) *value);
result = acpi_ec_write(ec, (u8) address, (u8) temp);
break;
default:
result = -EINVAL;
@ -633,19 +632,18 @@ next_byte:
}
bit_width -= 8;
if(bit_width){
if(function == ACPI_READ)
f_v |= (acpi_integer) (*value) << 8*i;
if(function == ACPI_WRITE)
(*value) >>=8;
if (bit_width) {
if (function == ACPI_READ)
f_v |= temp << 8 * i;
if (function == ACPI_WRITE)
temp >>= 8;
i++;
(u8)address ++;
goto next_byte;
}
if(function == ACPI_READ){
f_v |= (acpi_integer) (*value) << 8*i;
if (function == ACPI_READ) {
f_v |= temp << 8 * i;
*value = f_v;
}
@ -664,8 +662,6 @@ out:
default:
return_VALUE(AE_OK);
}
}