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thinkpad_acpi: support new BIOS version string pattern

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Latest ThinkPad models use a new string pattern of BIOS version,
thinkpad_acpi won't be loaded automatically without this fix.

Signed-off-by: Adam Lee <adam.lee@canonical.com>

Intentatation cleanup.

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Adam Lee 2015-02-11 13:43:10 +08:00 • committed by Darren Hart
parent 67ab62481c
commit 1b0eb5bc24
1 changed files with 17 additions and 3 deletions
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20
drivers/platform/x86/thinkpad_acpi.c
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@ -8885,17 +8885,31 @@ static bool __pure __init tpacpi_is_fw_digit(const char c)
return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z'); return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
} }
/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
static bool __pure __init tpacpi_is_valid_fw_id(const char * const s, static bool __pure __init tpacpi_is_valid_fw_id(const char * const s,
const char t) const char t)
{ {
return s && strlen(s) >= 8 && /*
* Most models: xxyTkkWW (#.##c)
* Ancient 570/600 and -SL lacks (#.##c)
*/
if (s && strlen(s) >= 8 &&
tpacpi_is_fw_digit(s[0]) && tpacpi_is_fw_digit(s[0]) &&
tpacpi_is_fw_digit(s[1]) && tpacpi_is_fw_digit(s[1]) &&
s[2] == t && s[2] == t &&
(s[3] == 'T' || s[3] == 'N') && (s[3] == 'T' || s[3] == 'N') &&
tpacpi_is_fw_digit(s[4]) && tpacpi_is_fw_digit(s[4]) &&
tpacpi_is_fw_digit(s[5]); tpacpi_is_fw_digit(s[5]))
return true;
/* New models: xxxyTkkW (#.##c); T550 and some others */
return s && strlen(s) >= 8 &&
tpacpi_is_fw_digit(s[0]) &&
tpacpi_is_fw_digit(s[1]) &&
tpacpi_is_fw_digit(s[2]) &&
s[3] == t &&
(s[4] == 'T' || s[4] == 'N') &&
tpacpi_is_fw_digit(s[5]) &&
tpacpi_is_fw_digit(s[6]);
} }
/* returns 0 - probe ok, or < 0 - probe error. /* returns 0 - probe ok, or < 0 - probe error.