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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 09:32:11 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 09:32:11 -0700 |
commit | c11f6c82581e8be4e1829c677db54e7f55cebece (patch) | |
tree | 1a116241b0831ded998aabe800bdc24104cbd826 /drivers/acpi/acpica/exutils.c | |
parent | 40aba218969914d1b225e742617adb921cf94eae (diff) | |
parent | 193a6dec1c0246a80b6d0101e4f351ccf877bcac (diff) |
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: (119 commits)
ACPI: don't pass handle for fixed hardware notifications
ACPI: remove null pointer checks in deferred execution path
ACPI: simplify deferred execution path
acerhdf: additional BIOS versions
acerhdf: convert to dev_pm_ops
acerhdf: fix fan control for AOA150 model
thermal: add missing Kconfig dependency
acpi: switch /proc/acpi/{debug_layer,debug_level} to seq_file
hp-wmi: fix rfkill memory leak on unload
ACPI: remove unnecessary #ifdef CONFIG_DMI
ACPI: linux/acpi.h should not include linux/dmi.h
hwmon driver for ACPI 4.0 power meters
topstar-laptop: add new driver for hotkeys support on Topstar N01
thinkpad_acpi: fix rfkill memory leak on unload
thinkpad-acpi: report brightness events when required
thinkpad-acpi: don't poll by default any of the reserved hotkeys
thinkpad-acpi: Fix procfs hotkey reset command
thinkpad-acpi: deprecate hotkey_bios_mask
thinkpad-acpi: hotkey poll fixes
thinkpad-acpi: be more strict when detecting a ThinkPad
...
Diffstat (limited to 'drivers/acpi/acpica/exutils.c')
-rw-r--r-- | drivers/acpi/acpica/exutils.c | 53 |
1 files changed, 35 insertions, 18 deletions
diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c index 87730e94413..7d41f99f705 100644 --- a/drivers/acpi/acpica/exutils.c +++ b/drivers/acpi/acpica/exutils.c @@ -358,50 +358,67 @@ static u32 acpi_ex_digits_needed(acpi_integer value, u32 base) * * FUNCTION: acpi_ex_eisa_id_to_string * - * PARAMETERS: numeric_id - EISA ID to be converted + * PARAMETERS: compressed_id - EISAID to be converted * out_string - Where to put the converted string (8 bytes) * * RETURN: None * - * DESCRIPTION: Convert a numeric EISA ID to string representation + * DESCRIPTION: Convert a numeric EISAID to string representation. Return + * buffer must be large enough to hold the string. The string + * returned is always exactly of length ACPI_EISAID_STRING_SIZE + * (includes null terminator). The EISAID is always 32 bits. * ******************************************************************************/ -void acpi_ex_eisa_id_to_string(u32 numeric_id, char *out_string) +void acpi_ex_eisa_id_to_string(char *out_string, acpi_integer compressed_id) { - u32 eisa_id; + u32 swapped_id; ACPI_FUNCTION_ENTRY(); + /* The EISAID should be a 32-bit integer */ + + if (compressed_id > ACPI_UINT32_MAX) { + ACPI_WARNING((AE_INFO, + "Expected EISAID is larger than 32 bits: 0x%8.8X%8.8X, truncating", + ACPI_FORMAT_UINT64(compressed_id))); + } + /* Swap ID to big-endian to get contiguous bits */ - eisa_id = acpi_ut_dword_byte_swap(numeric_id); + swapped_id = acpi_ut_dword_byte_swap((u32)compressed_id); - out_string[0] = (char)('@' + (((unsigned long)eisa_id >> 26) & 0x1f)); - out_string[1] = (char)('@' + ((eisa_id >> 21) & 0x1f)); - out_string[2] = (char)('@' + ((eisa_id >> 16) & 0x1f)); - out_string[3] = acpi_ut_hex_to_ascii_char((acpi_integer) eisa_id, 12); - out_string[4] = acpi_ut_hex_to_ascii_char((acpi_integer) eisa_id, 8); - out_string[5] = acpi_ut_hex_to_ascii_char((acpi_integer) eisa_id, 4); - out_string[6] = acpi_ut_hex_to_ascii_char((acpi_integer) eisa_id, 0); + /* First 3 bytes are uppercase letters. Next 4 bytes are hexadecimal */ + + out_string[0] = + (char)(0x40 + (((unsigned long)swapped_id >> 26) & 0x1F)); + out_string[1] = (char)(0x40 + ((swapped_id >> 21) & 0x1F)); + out_string[2] = (char)(0x40 + ((swapped_id >> 16) & 0x1F)); + out_string[3] = acpi_ut_hex_to_ascii_char((acpi_integer)swapped_id, 12); + out_string[4] = acpi_ut_hex_to_ascii_char((acpi_integer)swapped_id, 8); + out_string[5] = acpi_ut_hex_to_ascii_char((acpi_integer)swapped_id, 4); + out_string[6] = acpi_ut_hex_to_ascii_char((acpi_integer)swapped_id, 0); out_string[7] = 0; } /******************************************************************************* * - * FUNCTION: acpi_ex_unsigned_integer_to_string + * FUNCTION: acpi_ex_integer_to_string * - * PARAMETERS: Value - Value to be converted - * out_string - Where to put the converted string (8 bytes) + * PARAMETERS: out_string - Where to put the converted string. At least + * 21 bytes are needed to hold the largest + * possible 64-bit integer. + * Value - Value to be converted * * RETURN: None, string * - * DESCRIPTION: Convert a number to string representation. Assumes string - * buffer is large enough to hold the string. + * DESCRIPTION: Convert a 64-bit integer to decimal string representation. + * Assumes string buffer is large enough to hold the string. The + * largest string is (ACPI_MAX64_DECIMAL_DIGITS + 1). * ******************************************************************************/ -void acpi_ex_unsigned_integer_to_string(acpi_integer value, char *out_string) +void acpi_ex_integer_to_string(char *out_string, acpi_integer value) { u32 count; u32 digits_needed; |