diff options
Diffstat (limited to 'meta-steppeeagle/recipes-kernel/linux/linux-yocto/0055-yocto-amd-change-acpi-enforce-resources-to-lax.patch')
| -rw-r--r-- | meta-steppeeagle/recipes-kernel/linux/linux-yocto/0055-yocto-amd-change-acpi-enforce-resources-to-lax.patch | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/meta-steppeeagle/recipes-kernel/linux/linux-yocto/0055-yocto-amd-change-acpi-enforce-resources-to-lax.patch b/meta-steppeeagle/recipes-kernel/linux/linux-yocto/0055-yocto-amd-change-acpi-enforce-resources-to-lax.patch new file mode 100644 index 00000000..cf5be6c8 --- /dev/null +++ b/meta-steppeeagle/recipes-kernel/linux/linux-yocto/0055-yocto-amd-change-acpi-enforce-resources-to-lax.patch @@ -0,0 +1,19 @@ +On some AMD platforms, the SMBus IO region 0xb00 - 0xb07 conflicts with the +corresponding ACPI SystemIO region. This prevents the SMBus host controller +driver to function correctly. We set acpi_enforce_resources to +ENFORCE_RESOURCES_LAX so that the SMBus driver can work normally, even +though a warning message notifying the conflict is printed in system logs. + +Signed-off-by: Arindam Nath <arindam.nath@amd.com> +diff -Naur a/drivers/acpi/osl.c b/drivers/acpi/osl.c +--- a/drivers/acpi/osl.c 2013-11-04 05:11:51.000000000 +0530 ++++ b/drivers/acpi/osl.c 2014-05-06 16:41:51.078524581 +0530 +@@ -1533,7 +1533,7 @@ + #define ENFORCE_RESOURCES_LAX 1 + #define ENFORCE_RESOURCES_NO 0 + +-static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; ++static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_LAX; + + static int __init acpi_enforce_resources_setup(char *str) + { |