scripts/mod/file2alias.c:add_uuid() munges a UUID into a single string
which does not conform to the standard little endian UUID. This patch
changes add_uuid() to use the UUID correctly so that future drivers which
use UUID matches can simply use the %pUL format, and modifies the mei
driver with those changes.
Signed-off-by: Prarit Bhargava <prarit@xxxxxxxxxx>
---
drivers/misc/mei/bus.c | 6 ++----
include/linux/mod_devicetable.h | 4 ----
scripts/mod/file2alias.c | 9 ++++++---
3 files changed, 8 insertions(+), 11 deletions(-)
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 458aa5a..457e132 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -141,8 +141,7 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
const uuid_le *uuid = mei_me_cl_uuid(device->me_cl);
size_t len;
- len = snprintf(buf, PAGE_SIZE, "mei:%s:" MEI_CL_UUID_FMT ":",
- device->name, MEI_CL_UUID_ARGS(uuid->b));
+ len = snprintf(buf, PAGE_SIZE, "mei:%s:%pUl:", device->name, uuid);
return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
}
@@ -167,8 +166,7 @@ static int mei_cl_uevent(struct device *dev, struct kobj_uevent_env *env)
if (add_uevent_var(env, "MEI_CL_NAME=%s", device->name))
return -ENOMEM;
- if (add_uevent_var(env, "MODALIAS=mei:%s:" MEI_CL_UUID_FMT ":",
- device->name, MEI_CL_UUID_ARGS(uuid->b)))
+ if (add_uevent_var(env, "MODALIAS=mei:%s:%pUl:", device->name, uuid))
return -ENOMEM;
return 0;
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 34f25b7..becda6f 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -601,10 +601,6 @@ struct ipack_device_id {
#define MEI_CL_MODULE_PREFIX "mei:"
#define MEI_CL_NAME_SIZE 32
-#define MEI_CL_UUID_FMT "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
-#define MEI_CL_UUID_ARGS(_u) \
- _u[0], _u[1], _u[2], _u[3], _u[4], _u[5], _u[6], _u[7], \
- _u[8], _u[9], _u[10], _u[11], _u[12], _u[13], _u[14], _u[15]
/**
* struct mei_cl_device_id - MEI client device identifier
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 5f20882..8a46c60 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -137,10 +137,13 @@ static inline void add_wildcard(char *str)
static inline void add_uuid(char *str, uuid_le uuid)
{
int len = strlen(str);
- int i;
- for (i = 0; i < 16; i++)
- sprintf(str + len + (i << 1), "%02x", uuid.b[i]);
+ sprintf(str + len,
+ "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+ uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
+ uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
+ uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
+ uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
}
/**
--
1.7.9.3
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