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authorAlexander Usyskin <alexander.usyskin@intel.com>2015-07-29 14:59:33 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-08-04 03:31:53 +0300
commit71e117f28a6782fa2d31cce63340a9f18417afa4 (patch)
tree69c9176e9c42efbc8037f39ce13edae12bd935ac /drivers
parentbb2ef9c39db2e3c2562b4e439b2b00dc42e2c026 (diff)
downloadlinux-71e117f28a6782fa2d31cce63340a9f18417afa4.tar.xz
mei: hbm: add new error code MEI_CL_CONN_NOT_ALLOWED
The device can return error 5 (NOT_ALLOWED) on connection attempt. This error can happen if: 1. An another connection attempt is in progress 2. There is an attempt to connect a fixed (connectionless) client 3. The number of available connections is exceeded (new in HBM 2.0) We should not hit that error unless there is an internal book keeping hiccup except option (3), therefore we translate the error code to errno EBUSY; Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/misc/mei/hbm.c2
-rw-r--r--drivers/misc/mei/hw.h1
2 files changed, 3 insertions, 0 deletions
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index 7f53597e697a..7646569922fe 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -52,6 +52,7 @@ static const char *mei_cl_conn_status_str(enum mei_cl_connect_status status)
MEI_CL_CS(ALREADY_STARTED);
MEI_CL_CS(OUT_OF_RESOURCES);
MEI_CL_CS(MESSAGE_SMALL);
+ MEI_CL_CS(NOT_ALLOWED);
default: return "unknown";
}
#undef MEI_CL_CCS
@@ -89,6 +90,7 @@ static int mei_cl_conn_status_to_errno(enum mei_cl_connect_status status)
case MEI_CL_CONN_ALREADY_STARTED: return -EBUSY;
case MEI_CL_CONN_OUT_OF_RESOURCES: return -EBUSY;
case MEI_CL_CONN_MESSAGE_SMALL: return -EINVAL;
+ case MEI_CL_CONN_NOT_ALLOWED: return -EBUSY;
default: return -EINVAL;
}
}
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h
index 3f8901a503a6..c262d0bd5bd5 100644
--- a/drivers/misc/mei/hw.h
+++ b/drivers/misc/mei/hw.h
@@ -161,6 +161,7 @@ enum mei_cl_connect_status {
MEI_CL_CONN_ALREADY_STARTED = MEI_HBMS_ALREADY_EXISTS,
MEI_CL_CONN_OUT_OF_RESOURCES = MEI_HBMS_REJECTED,
MEI_CL_CONN_MESSAGE_SMALL = MEI_HBMS_INVALID_PARAMETER,
+ MEI_CL_CONN_NOT_ALLOWED = MEI_HBMS_NOT_ALLOWED,
};
/*