diff options
author | David S. Miller <davem@davemloft.net> | 2009-02-14 23:12:00 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2009-02-14 23:12:00 -0800 |
commit | 5e30589521518bff36fd2638b3c3d69679c50436 (patch) | |
tree | 6ac985658a06b0787e4354d0d16d380ea9b16a5a /drivers/acpi/osl.c | |
parent | ac178ef0ae9eb44fd527d87aa9b6394e05f56e1f (diff) | |
parent | d2f8d7ee1a9b4650b4e43325b321801264f7c37a (diff) |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
drivers/net/wireless/iwlwifi/iwl-agn.c
drivers/net/wireless/iwlwifi/iwl3945-base.c
Diffstat (limited to 'drivers/acpi/osl.c')
-rw-r--r-- | drivers/acpi/osl.c | 54 |
1 files changed, 52 insertions, 2 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 6729a4992f2..b3193ec0a2e 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -228,10 +228,10 @@ void acpi_os_vprintf(const char *fmt, va_list args) if (acpi_in_debugger) { kdb_printf("%s", buffer); } else { - printk("%s", buffer); + printk(KERN_CONT "%s", buffer); } #else - printk("%s", buffer); + printk(KERN_CONT "%s", buffer); #endif } @@ -1317,6 +1317,54 @@ acpi_os_validate_interface (char *interface) return AE_SUPPORT; } +#ifdef CONFIG_X86 + +struct aml_port_desc { + uint start; + uint end; + char* name; + char warned; +}; + +static struct aml_port_desc aml_invalid_port_list[] = { + {0x20, 0x21, "PIC0", 0}, + {0xA0, 0xA1, "PIC1", 0}, + {0x4D0, 0x4D1, "ELCR", 0} +}; + +/* + * valid_aml_io_address() + * + * if valid, return true + * else invalid, warn once, return false + */ +static bool valid_aml_io_address(uint address, uint length) +{ + int i; + int entries = sizeof(aml_invalid_port_list) / sizeof(struct aml_port_desc); + + for (i = 0; i < entries; ++i) { + if ((address >= aml_invalid_port_list[i].start && + address <= aml_invalid_port_list[i].end) || + (address + length >= aml_invalid_port_list[i].start && + address + length <= aml_invalid_port_list[i].end)) + { + if (!aml_invalid_port_list[i].warned) + { + printk(KERN_ERR "ACPI: Denied BIOS AML access" + " to invalid port 0x%x+0x%x (%s)\n", + address, length, + aml_invalid_port_list[i].name); + aml_invalid_port_list[i].warned = 1; + } + return false; /* invalid */ + } + } + return true; /* valid */ +} +#else +static inline bool valid_aml_io_address(uint address, uint length) { return true; } +#endif /****************************************************************************** * * FUNCTION: acpi_os_validate_address @@ -1346,6 +1394,8 @@ acpi_os_validate_address ( switch (space_id) { case ACPI_ADR_SPACE_SYSTEM_IO: + if (!valid_aml_io_address(address, length)) + return AE_AML_ILLEGAL_ADDRESS; case ACPI_ADR_SPACE_SYSTEM_MEMORY: /* Only interference checks against SystemIO and SytemMemory are needed */ |