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staging: gdm724x: Remove test for host endian

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gdm_endian.c: small changes were done to remove testing for host
endianness and in-driver conversion for byte-ordering.
The linux/kernel.h functions are used now.

gdm_endian.h: removal of code no longer needed with changes
in gdm_endian.c.

Signed-off-by: Jaime Arrocha <jarr@kerneldev.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jaime Arrocha 2015-05-26 13:14:05 -05:00 committed by Greg Kroah-Hartman
parent 3f8ded9d9c
commit 77e8a50149
2 changed files with 17 additions and 40 deletions
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46
drivers/staging/gdm724x/gdm_endian.c
View file

@ -11,57 +11,45 @@
* GNU General Public License for more details.
*/
#include <linux/slab.h>
#include <linux/kernel.h>
#include "gdm_endian.h"
void gdm_set_endian(struct gdm_endian *ed, u8 dev_endian)
{
u8 a[2] = {0x12, 0x34};
u8 b[2] = {0, };
u16 c = 0x1234;
if (dev_endian == ENDIANNESS_BIG)
ed->dev_ed = ENDIANNESS_BIG;
else
ed->dev_ed = ENDIANNESS_LITTLE;
memcpy(b, &c, 2);
if (a[0] != b[0])
ed->host_ed = ENDIANNESS_LITTLE;
else
ed->host_ed = ENDIANNESS_BIG;
}
u16 gdm_cpu_to_dev16(struct gdm_endian *ed, u16 x)
{
if (ed->dev_ed == ed->host_ed)
return x;
return Endian16_Swap(x);
if (ed->dev_ed == ENDIANNESS_LITTLE)
return cpu_to_le16(x);
else
return cpu_to_be16(x);
}
u16 gdm_dev16_to_cpu(struct gdm_endian *ed, u16 x)
{
if (ed->dev_ed == ed->host_ed)
return x;
return Endian16_Swap(x);
if (ed->dev_ed == ENDIANNESS_LITTLE)
return le16_to_cpu(x);
else
return be16_to_cpu(x);
}
u32 gdm_cpu_to_dev32(struct gdm_endian *ed, u32 x)
{
if (ed->dev_ed == ed->host_ed)
return x;
return Endian32_Swap(x);
if (ed->dev_ed == ENDIANNESS_LITTLE)
return cpu_to_le32(x);
else
return cpu_to_be32(x);
}
u32 gdm_dev32_to_cpu(struct gdm_endian *ed, u32 x)
{
if (ed->dev_ed == ed->host_ed)
return x;
return Endian32_Swap(x);
if (ed->dev_ed == ENDIANNESS_LITTLE)
return le32_to_cpu(x);
else
return be32_to_cpu(x);
}

11
drivers/staging/gdm724x/gdm_endian.h
View file

@ -16,16 +16,6 @@
#include <linux/types.h>
#define Endian16_Swap(value) \
((((u16)((value) & 0x00FF)) << 8) | \
(((u16)((value) & 0xFF00)) >> 8))
#define Endian32_Swap(value) \
((((u32)((value) & 0x000000FF)) << 24) | \
(((u32)((value) & 0x0000FF00)) << 8) | \
(((u32)((value) & 0x00FF0000)) >> 8) | \
(((u32)((value) & 0xFF000000)) >> 24))
enum {
ENDIANNESS_MIN = 0,
ENDIANNESS_UNKNOWN,
@ -37,7 +27,6 @@ enum {
struct gdm_endian {
u8 dev_ed;
u8 host_ed;
};
void gdm_set_endian(struct gdm_endian *ed, u8 dev_endian);