457c005aaf
Update the driver's HCI structs and associated endian-converter functions with new driver-specific bitwise types. The new types encourage correct endian-handling within the driver by triggering sparse warnings when mixing with other types. The driver's endian-converters provide correct and warning-free conversions. Driver-specific bitwise types are used instead of the standard endian-specific types because the attached device can be of either endian. This is also why the driver has its own endian-conversion functions, which consider endianness of both the cpu and the attached device. Introducing the new types to the converters fixes the sparse warnings: CHECK drivers/staging/gdm724x/gdm_endian.c drivers/staging/gdm724x/gdm_endian.c:28:24: warning: incorrect type in return expression (different base types) drivers/staging/gdm724x/gdm_endian.c:28:24: expected unsigned short drivers/staging/gdm724x/gdm_endian.c:28:24: got restricted __le16 [usertype] <noident> drivers/staging/gdm724x/gdm_endian.c:30:24: warning: incorrect type in return expression (different base types) drivers/staging/gdm724x/gdm_endian.c:30:24: expected unsigned short drivers/staging/gdm724x/gdm_endian.c:30:24: got restricted __be16 [usertype] <noident> drivers/staging/gdm724x/gdm_endian.c:36:24: warning: cast to restricted __le16 drivers/staging/gdm724x/gdm_endian.c:38:24: warning: cast to restricted __be16 drivers/staging/gdm724x/gdm_endian.c:44:24: warning: incorrect type in return expression (different base types) drivers/staging/gdm724x/gdm_endian.c:44:24: expected unsigned int drivers/staging/gdm724x/gdm_endian.c:44:24: got restricted __le32 [usertype] <noident> drivers/staging/gdm724x/gdm_endian.c:46:24: warning: incorrect type in return expression (different base types) drivers/staging/gdm724x/gdm_endian.c:46:24: expected unsigned int drivers/staging/gdm724x/gdm_endian.c:46:24: got restricted __be32 [usertype] <noident> drivers/staging/gdm724x/gdm_endian.c:52:24: warning: cast to restricted __le32 drivers/staging/gdm724x/gdm_endian.c:54:24: warning: cast to restricted __be32 Signed-off-by: Eric S. Stone <esstone@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/*
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* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __GDM_ENDIAN_H__
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#define __GDM_ENDIAN_H__
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#include <linux/types.h>
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/*
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* For data in "device-endian" byte order (device endianness is model
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* dependent). Analogous to __leXX or __beXX.
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*/
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typedef __u32 __bitwise __dev32;
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typedef __u16 __bitwise __dev16;
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enum {
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ENDIANNESS_MIN = 0,
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ENDIANNESS_UNKNOWN,
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ENDIANNESS_LITTLE,
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ENDIANNESS_BIG,
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ENDIANNESS_MIDDLE,
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ENDIANNESS_MAX
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};
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struct gdm_endian {
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u8 dev_ed;
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};
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void gdm_set_endian(struct gdm_endian *ed, u8 dev_endian);
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__dev16 gdm_cpu_to_dev16(struct gdm_endian *ed, u16 x);
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u16 gdm_dev16_to_cpu(struct gdm_endian *ed, __dev16 x);
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__dev32 gdm_cpu_to_dev32(struct gdm_endian *ed, u32 x);
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u32 gdm_dev32_to_cpu(struct gdm_endian *ed, __dev32 x);
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#endif /*__GDM_ENDIAN_H__*/
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