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Subject[PATCH v3] Staging: TIDSPBRIDGE: Remove UUID helper
Date
From: Ivaylo Dimitrov <freemangordon@abv.bg>

Custom uuid helper function is needed only in rmgr/dbdcd.c and doesn't
need to be exported. It can also be made way simpler by using sscanf.

Signed-off-by: Ivaylo Dimitrov <freemangordon@abv.bg>
---
drivers/staging/tidspbridge/Makefile | 2 +-
drivers/staging/tidspbridge/gen/uuidutil.c | 85 ---------------
.../tidspbridge/include/dspbridge/uuidutil.h | 18 ----
drivers/staging/tidspbridge/rmgr/dbdcd.c | 108 +++++++++++++++-----
4 files changed, 81 insertions(+), 132 deletions(-)
delete mode 100644 drivers/staging/tidspbridge/gen/uuidutil.c

diff --git a/drivers/staging/tidspbridge/Makefile b/drivers/staging/tidspbridge/Makefile
index 230e3e6..2e77734 100644
--- a/drivers/staging/tidspbridge/Makefile
+++ b/drivers/staging/tidspbridge/Makefile
@@ -1,6 +1,6 @@
obj-$(CONFIG_TIDSPBRIDGE) += tidspbridge.o

-libgen = gen/gh.o gen/uuidutil.o
+libgen = gen/gh.o
libcore = core/chnl_sm.o core/msg_sm.o core/io_sm.o core/tiomap3430.o \
core/tiomap3430_pwr.o core/tiomap_io.o \
core/ue_deh.o core/wdt.o core/dsp-clock.o core/sync.o
diff --git a/drivers/staging/tidspbridge/gen/uuidutil.c b/drivers/staging/tidspbridge/gen/uuidutil.c
deleted file mode 100644
index b7d8313..0000000
--- a/drivers/staging/tidspbridge/gen/uuidutil.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * uuidutil.c
- *
- * DSP-BIOS Bridge driver support functions for TI OMAP processors.
- *
- * This file contains the implementation of UUID helper functions.
- *
- * Copyright (C) 2005-2006 Texas Instruments, Inc.
- *
- * This package is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-#include <linux/types.h>
-
-/* ----------------------------------- Host OS */
-#include <dspbridge/host_os.h>
-
-/* ----------------------------------- DSP/BIOS Bridge */
-#include <dspbridge/dbdefs.h>
-
-/* ----------------------------------- This */
-#include <dspbridge/uuidutil.h>
-
-static s32 uuid_hex_to_bin(char *buf, s32 len)
-{
- s32 i;
- s32 result = 0;
- int value;
-
- for (i = 0; i < len; i++) {
- value = hex_to_bin(*buf++);
- result *= 16;
- if (value > 0)
- result += value;
- }
-
- return result;
-}
-
-/*
- * ======== uuid_uuid_from_string ========
- * Purpose:
- * Converts a string to a struct dsp_uuid.
- */
-void uuid_uuid_from_string(char *sz_uuid, struct dsp_uuid *uuid_obj)
-{
- s32 j;
-
- uuid_obj->data1 = uuid_hex_to_bin(sz_uuid, 8);
- sz_uuid += 8;
-
- /* Step over underscore */
- sz_uuid++;
-
- uuid_obj->data2 = (u16) uuid_hex_to_bin(sz_uuid, 4);
- sz_uuid += 4;
-
- /* Step over underscore */
- sz_uuid++;
-
- uuid_obj->data3 = (u16) uuid_hex_to_bin(sz_uuid, 4);
- sz_uuid += 4;
-
- /* Step over underscore */
- sz_uuid++;
-
- uuid_obj->data4 = (u8) uuid_hex_to_bin(sz_uuid, 2);
- sz_uuid += 2;
-
- uuid_obj->data5 = (u8) uuid_hex_to_bin(sz_uuid, 2);
- sz_uuid += 2;
-
- /* Step over underscore */
- sz_uuid++;
-
- for (j = 0; j < 6; j++) {
- uuid_obj->data6[j] = (u8) uuid_hex_to_bin(sz_uuid, 2);
- sz_uuid += 2;
- }
-}
diff --git a/drivers/staging/tidspbridge/include/dspbridge/uuidutil.h b/drivers/staging/tidspbridge/include/dspbridge/uuidutil.h
index 414bf71..b4951a1 100644
--- a/drivers/staging/tidspbridge/include/dspbridge/uuidutil.h
+++ b/drivers/staging/tidspbridge/include/dspbridge/uuidutil.h
@@ -21,22 +21,4 @@

#define MAXUUIDLEN 37

-/*
- * ======== uuid_uuid_from_string ========
- * Purpose:
- * Converts an ANSI string to a dsp_uuid.
- * Parameters:
- * sz_uuid: Pointer to a string that represents a dsp_uuid object.
- * uuid_obj: Pointer to a dsp_uuid object.
- * Returns:
- * Requires:
- * uuid_obj & sz_uuid are non-NULL values.
- * Ensures:
- * Details:
- * We assume the string representation of a UUID has the following format:
- * "12345678_1234_1234_1234_123456789abc".
- */
-extern void uuid_uuid_from_string(char *sz_uuid,
- struct dsp_uuid *uuid_obj);
-
#endif /* UUIDUTIL_ */
diff --git a/drivers/staging/tidspbridge/rmgr/dbdcd.c b/drivers/staging/tidspbridge/rmgr/dbdcd.c
index 3d2a26f..190ca3f 100644
--- a/drivers/staging/tidspbridge/rmgr/dbdcd.c
+++ b/drivers/staging/tidspbridge/rmgr/dbdcd.c
@@ -74,6 +74,47 @@ static int get_dep_lib_info(struct dcd_manager *hdcd_mgr,
enum nldr_phase phase);

/*
+ * ======== dcd_uuid_from_string ========
+ * Purpose:
+ * Converts an ANSI string to a dsp_uuid.
+ * Parameters:
+ * sz_uuid: Pointer to a string that represents a dsp_uuid object.
+ * uuid_obj: Pointer to a dsp_uuid object.
+ * Returns:
+ * 0: Success.
+ * -EINVAL: Coversion failed
+ * Requires:
+ * uuid_obj & sz_uuid are non-NULL values.
+ * Ensures:
+ * Details:
+ * We assume the string representation of a UUID has the following format:
+ * "12345678_1234_1234_1234_123456789abc".
+ */
+static int dcd_uuid_from_string(char *sz_uuid, struct dsp_uuid *uuid_obj)
+{
+ char c;
+ u64 t;
+ struct dsp_uuid uuid_tmp;
+
+ /*
+ * sscanf implementation cannot deal with hh format modifier
+ * if the converted value doesn't fit in u32. So, convert the
+ * last six bytes to u64 and memcpy what is needed
+ */
+ if(sscanf(sz_uuid, "%8x%c%4hx%c%4hx%c%2hhx%2hhx%c%llx",
+ &uuid_tmp.data1, &c, &uuid_tmp.data2, &c,
+ &uuid_tmp.data3, &c, &uuid_tmp.data4,
+ &uuid_tmp.data5, &c, &t) != 10)
+ return -EINVAL;
+
+ t = cpu_to_be64(t);
+ memcpy(&uuid_tmp.data6[0], ((char*)&t) + 2, 6);
+ *uuid_obj = uuid_tmp;
+
+ return 0;
+}
+
+/*
* ======== dcd_auto_register ========
* Purpose:
* Parses the supplied image and resigsters with DCD.
@@ -253,14 +294,15 @@ int dcd_enumerate_object(s32 index, enum dsp_dcdobjtype obj_type,
if (!status) {
/* Create UUID value using string retrieved from
* registry. */
- uuid_uuid_from_string(sz_value, &dsp_uuid_obj);
-
- *uuid_obj = dsp_uuid_obj;
+ status = dcd_uuid_from_string(sz_value, &dsp_uuid_obj);

- /* Increment enum_refs to update reference count. */
- enum_refs++;
+ if (!status) {
+ *uuid_obj = dsp_uuid_obj;

- status = 0;
+ /* Increment enum_refs to update reference
+ * count. */
+ enum_refs++;
+ }
} else if (status == -ENODATA) {
/* At the end of enumeration. Reset enum_refs. */
enum_refs = 0;
@@ -581,24 +623,28 @@ int dcd_get_objects(struct dcd_manager *hdcd_mgr,
psz_cur = psz_coff_buf;
while ((token = strsep(&psz_cur, seps)) && *token != '\0') {
/* Retrieve UUID string. */
- uuid_uuid_from_string(token, &dsp_uuid_obj);
-
- /* Retrieve object type */
- token = strsep(&psz_cur, seps);
+ status = dcd_uuid_from_string(token, &dsp_uuid_obj);

- /* Retrieve object type */
- object_type = atoi(token);
+ if (!status) {
+ /* Retrieve object type */
+ token = strsep(&psz_cur, seps);

- /*
- * Apply register_fxn to the found DCD object.
- * Possible actions include:
- *
- * 1) Register found DCD object.
- * 2) Unregister found DCD object (when handle == NULL)
- * 3) Add overlay node.
- */
- status =
- register_fxn(&dsp_uuid_obj, object_type, handle);
+ /* Retrieve object type */
+ object_type = atoi(token);
+
+ /*
+ * Apply register_fxn to the found DCD object.
+ * Possible actions include:
+ *
+ * 1) Register found DCD object.
+ * 2) Unregister found DCD object
+ * (when handle == NULL)
+ * 3) Add overlay node.
+ */
+ status =
+ register_fxn(&dsp_uuid_obj, object_type,
+ handle);
+ }
if (status) {
/* if error occurs, break from while loop. */
break;
@@ -1001,9 +1047,12 @@ static int get_attrs_from_buf(char *psz_buf, u32 ul_buf_size,
token = strsep(&psz_cur, seps);

/* dsp_uuid ui_node_id */
- uuid_uuid_from_string(token,
- &gen_obj->obj_data.node_obj.ndb_props.
- ui_node_id);
+ status = dcd_uuid_from_string(token,
+ &gen_obj->obj_data.node_obj.
+ ndb_props.ui_node_id);
+ if (status)
+ break;
+
token = strsep(&psz_cur, seps);

/* ac_name */
@@ -1400,9 +1449,12 @@ static int get_dep_lib_info(struct dcd_manager *hdcd_mgr,
break;
} else {
/* Retrieve UUID string. */
- uuid_uuid_from_string(token,
- &(dep_lib_uuids
- [dep_libs]));
+ status = dcd_uuid_from_string(token,
+ &(dep_lib_uuids
+ [dep_libs]));
+ if (status)
+ break;
+
/* Is this library persistent? */
token = strsep(&psz_cur, seps);
prstnt_dep_libs[dep_libs] = atoi(token);
--
1.5.6.1


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