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authorVishal Verma <vishal.l.verma@intel.com>2016-12-05 17:00:37 -0700
committerDan Williams <dan.j.williams@intel.com>2016-12-06 16:08:10 -0800
commit9a901f5495e26e691c7d0ea7b6057a2f3e6330ed (patch)
treef923c2732e3cdbe9fe49fc25234d185c27bf8e1e /drivers/acpi
parent3e5de27e940d00d8d504dfb96625fb654f641509 (diff)
downloadlinux-9a901f5495e26e691c7d0ea7b6057a2f3e6330ed.tar.bz2
acpi, nfit: fix extended status translations for ACPI DSMs
ACPI DSMs can have an 'extended' status which can be non-zero to convey additional information about the command. In the xlat_status routine, where we translate the command statuses, we were returning an error for a non-zero extended status, even if the primary status indicated success. Return from each command's 'case' once we have verified both its status and extend status are good. Cc: <stable@vger.kernel.org> Fixes: 11294d63ac91 ("nfit: fail DSMs that return non-zero status by default") Signed-off-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/nfit/core.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 71a7d07c28c9..60acbb1d159c 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -113,7 +113,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status)
flags = ND_ARS_PERSISTENT | ND_ARS_VOLATILE;
if ((status >> 16 & flags) == 0)
return -ENOTTY;
- break;
+ return 0;
case ND_CMD_ARS_START:
/* ARS is in progress */
if ((status & 0xffff) == NFIT_ARS_START_BUSY)
@@ -122,7 +122,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status)
/* Command failed */
if (status & 0xffff)
return -EIO;
- break;
+ return 0;
case ND_CMD_ARS_STATUS:
ars_status = buf;
/* Command failed */
@@ -154,7 +154,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status)
/* Unknown status */
if (status >> 16)
return -EIO;
- break;
+ return 0;
case ND_CMD_CLEAR_ERROR:
clear_err = buf;
if (status & 0xffff)
@@ -163,7 +163,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status)
return -EIO;
if (clear_err->length > clear_err->cleared)
return clear_err->cleared;
- break;
+ return 0;
default:
break;
}