diff options
| author | Mark Brown <broonie@kernel.org> | 2014-11-26 20:37:57 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-11-26 20:37:57 +0000 |
| commit | cf2394f70cf7774a107fbaa1ef5010db4bd69baa (patch) | |
| tree | e79e3e479d04213a67ecd47b31c7db648b0313c2 /drivers/acpi/acpica/tbxfroot.c | |
| parent | 45fc84c668ba6cc08cbae74042be838bf9283d98 (diff) | |
| parent | 206c5f60a3d902bc4b56dab2de3e88de5eb06108 (diff) | |
Merge tag 'v3.18-rc4' into regulator-max77802
Linux 3.18-rc4
Diffstat (limited to 'drivers/acpi/acpica/tbxfroot.c')
| -rw-r--r-- | drivers/acpi/acpica/tbxfroot.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c index 65ab8fed3d5e..43a54af2b548 100644 --- a/drivers/acpi/acpica/tbxfroot.c +++ b/drivers/acpi/acpica/tbxfroot.c @@ -50,6 +50,36 @@ ACPI_MODULE_NAME("tbxfroot") /******************************************************************************* * + * FUNCTION: acpi_tb_get_rsdp_length + * + * PARAMETERS: rsdp - Pointer to RSDP + * + * RETURN: Table length + * + * DESCRIPTION: Get the length of the RSDP + * + ******************************************************************************/ +u32 acpi_tb_get_rsdp_length(struct acpi_table_rsdp *rsdp) +{ + + if (!ACPI_VALIDATE_RSDP_SIG(rsdp->signature)) { + + /* BAD Signature */ + + return (0); + } + + /* "Length" field is available if table version >= 2 */ + + if (rsdp->revision >= 2) { + return (rsdp->length); + } else { + return (ACPI_RSDP_CHECKSUM_LENGTH); + } +} + +/******************************************************************************* + * * FUNCTION: acpi_tb_validate_rsdp * * PARAMETERS: rsdp - Pointer to unvalidated RSDP @@ -59,7 +89,8 @@ ACPI_MODULE_NAME("tbxfroot") * DESCRIPTION: Validate the RSDP (ptr) * ******************************************************************************/ -acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp) + +acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp * rsdp) { /* |