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Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (42 commits)
  Staging: usbip: fix build warning on 64bit kernels
  Staging: me4000: remove some compiler warnings
  Staging: wbusb: fix a bunch of compiler warnings
  Staging: w35und: module init cleanup
  Staging: w35und: use gotos for error handling
  Staging: w35und: remove spinlock wrappers
  Staging: sxg: fix compiler warnings.
  Staging: sxg: fix up unused function warnings
  Staging: sxg: clean up C99 comments
  Staging: Lindent the echo driver
  Staging: SLICOSS: Free multicast list at driver exit
  Staging: PCC-ACPI: Fix all checkpatch errors
  Staging: pcc-acpi: update to latest version
  Staging: Clean up sxg driver
  Staging: remove remaining uses of __FUNCTION__
  Staging: add poch driver
  Staging: wlan-ng: fix build error if wireless networking is not enabled
  Staging: echo: remove annoying "end of function" markers
  Staging: echo: remove __cplusplus macro magic
  Staging: echo: remove dead code
  ...
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Linus Torvalds committed Oct 23, 2008
2 parents 92fb83a + 51b9054 commit 4543237
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Showing 77 changed files with 5,560 additions and 3,087 deletions.
4 changes: 4 additions & 0 deletions drivers/staging/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -43,4 +43,8 @@ source "drivers/staging/echo/Kconfig"

source "drivers/staging/at76_usb/Kconfig"

source "drivers/staging/pcc-acpi/Kconfig"

source "drivers/staging/poch/Kconfig"

endif # STAGING
2 changes: 2 additions & 0 deletions drivers/staging/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -13,3 +13,5 @@ obj-$(CONFIG_W35UND) += winbond/
obj-$(CONFIG_PRISM2_USB) += wlan-ng/
obj-$(CONFIG_ECHO) += echo/
obj-$(CONFIG_USB_ATMEL) += at76_usb/
obj-$(CONFIG_PCC_ACPI) += pcc-acpi/
obj-$(CONFIG_POCH) += poch/
4 changes: 3 additions & 1 deletion drivers/staging/at76_usb/at76_usb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2319,9 +2319,11 @@ static int at76_iw_handler_get_scan(struct net_device *netdev,
if (!iwe)
return -ENOMEM;

if (priv->scan_state != SCAN_COMPLETED)
if (priv->scan_state != SCAN_COMPLETED) {
/* scan not yet finished */
kfree(iwe);
return -EAGAIN;
}

spin_lock_irqsave(&priv->bss_list_spinlock, flags);

Expand Down
205 changes: 90 additions & 115 deletions drivers/staging/echo/bit_operations.h
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Original file line number Diff line number Diff line change
Expand Up @@ -30,114 +30,98 @@
#if !defined(_BIT_OPERATIONS_H_)
#define _BIT_OPERATIONS_H_

#ifdef __cplusplus
extern "C" {
#endif

#if defined(__i386__) || defined(__x86_64__)
/*! \brief Find the bit position of the highest set bit in a word
\param bits The word to be searched
\return The bit number of the highest set bit, or -1 if the word is zero. */
static __inline__ int top_bit(unsigned int bits)
{
int res;

__asm__ (" xorl %[res],%[res];\n"
" decl %[res];\n"
" bsrl %[bits],%[res]\n"
: [res] "=&r" (res)
: [bits] "rm" (bits));
return res;
int res;

__asm__(" xorl %[res],%[res];\n"
" decl %[res];\n"
" bsrl %[bits],%[res]\n"
:[res] "=&r" (res)
:[bits] "rm"(bits)
);
return res;
}
/*- End of function --------------------------------------------------------*/

/*! \brief Find the bit position of the lowest set bit in a word
\param bits The word to be searched
\return The bit number of the lowest set bit, or -1 if the word is zero. */
static __inline__ int bottom_bit(unsigned int bits)
{
int res;

__asm__ (" xorl %[res],%[res];\n"
" decl %[res];\n"
" bsfl %[bits],%[res]\n"
: [res] "=&r" (res)
: [bits] "rm" (bits));
return res;
int res;

__asm__(" xorl %[res],%[res];\n"
" decl %[res];\n"
" bsfl %[bits],%[res]\n"
:[res] "=&r" (res)
:[bits] "rm"(bits)
);
return res;
}
/*- End of function --------------------------------------------------------*/
#else
static __inline__ int top_bit(unsigned int bits)
{
int i;

if (bits == 0)
return -1;
i = 0;
if (bits & 0xFFFF0000)
{
bits &= 0xFFFF0000;
i += 16;
}
if (bits & 0xFF00FF00)
{
bits &= 0xFF00FF00;
i += 8;
}
if (bits & 0xF0F0F0F0)
{
bits &= 0xF0F0F0F0;
i += 4;
}
if (bits & 0xCCCCCCCC)
{
bits &= 0xCCCCCCCC;
i += 2;
}
if (bits & 0xAAAAAAAA)
{
bits &= 0xAAAAAAAA;
i += 1;
}
return i;
int i;

if (bits == 0)
return -1;
i = 0;
if (bits & 0xFFFF0000) {
bits &= 0xFFFF0000;
i += 16;
}
if (bits & 0xFF00FF00) {
bits &= 0xFF00FF00;
i += 8;
}
if (bits & 0xF0F0F0F0) {
bits &= 0xF0F0F0F0;
i += 4;
}
if (bits & 0xCCCCCCCC) {
bits &= 0xCCCCCCCC;
i += 2;
}
if (bits & 0xAAAAAAAA) {
bits &= 0xAAAAAAAA;
i += 1;
}
return i;
}
/*- End of function --------------------------------------------------------*/

static __inline__ int bottom_bit(unsigned int bits)
{
int i;

if (bits == 0)
return -1;
i = 32;
if (bits & 0x0000FFFF)
{
bits &= 0x0000FFFF;
i -= 16;
}
if (bits & 0x00FF00FF)
{
bits &= 0x00FF00FF;
i -= 8;
}
if (bits & 0x0F0F0F0F)
{
bits &= 0x0F0F0F0F;
i -= 4;
}
if (bits & 0x33333333)
{
bits &= 0x33333333;
i -= 2;
}
if (bits & 0x55555555)
{
bits &= 0x55555555;
i -= 1;
}
return i;
int i;

if (bits == 0)
return -1;
i = 32;
if (bits & 0x0000FFFF) {
bits &= 0x0000FFFF;
i -= 16;
}
if (bits & 0x00FF00FF) {
bits &= 0x00FF00FF;
i -= 8;
}
if (bits & 0x0F0F0F0F) {
bits &= 0x0F0F0F0F;
i -= 4;
}
if (bits & 0x33333333) {
bits &= 0x33333333;
i -= 2;
}
if (bits & 0x55555555) {
bits &= 0x55555555;
i -= 1;
}
return i;
}
/*- End of function --------------------------------------------------------*/
#endif

/*! \brief Bit reverse a byte.
Expand All @@ -146,16 +130,16 @@ static __inline__ int bottom_bit(unsigned int bits)
static __inline__ uint8_t bit_reverse8(uint8_t x)
{
#if defined(__i386__) || defined(__x86_64__)
/* If multiply is fast */
return ((x*0x0802U & 0x22110U) | (x*0x8020U & 0x88440U))*0x10101U >> 16;
/* If multiply is fast */
return ((x * 0x0802U & 0x22110U) | (x * 0x8020U & 0x88440U)) *
0x10101U >> 16;
#else
/* If multiply is slow, but we have a barrel shifter */
x = (x >> 4) | (x << 4);
x = ((x & 0xCC) >> 2) | ((x & 0x33) << 2);
return ((x & 0xAA) >> 1) | ((x & 0x55) << 1);
/* If multiply is slow, but we have a barrel shifter */
x = (x >> 4) | (x << 4);
x = ((x & 0xCC) >> 2) | ((x & 0x33) << 2);
return ((x & 0xAA) >> 1) | ((x & 0x55) << 1);
#endif
}
/*- End of function --------------------------------------------------------*/

/*! \brief Bit reverse a 16 bit word.
\param data The word to be reversed.
Expand Down Expand Up @@ -193,9 +177,8 @@ uint16_t make_mask16(uint16_t x);
\return The word with the single set bit. */
static __inline__ uint32_t least_significant_one32(uint32_t x)
{
return (x & (-(int32_t) x));
return (x & (-(int32_t) x));
}
/*- End of function --------------------------------------------------------*/

/*! \brief Find the most significant one in a word, and return a word
with just that bit set.
Expand All @@ -204,50 +187,42 @@ static __inline__ uint32_t least_significant_one32(uint32_t x)
static __inline__ uint32_t most_significant_one32(uint32_t x)
{
#if defined(__i386__) || defined(__x86_64__)
return 1 << top_bit(x);
return 1 << top_bit(x);
#else
x = make_mask32(x);
return (x ^ (x >> 1));
x = make_mask32(x);
return (x ^ (x >> 1));
#endif
}
/*- End of function --------------------------------------------------------*/

/*! \brief Find the parity of a byte.
\param x The byte to be checked.
\return 1 for odd, or 0 for even. */
static __inline__ int parity8(uint8_t x)
{
x = (x ^ (x >> 4)) & 0x0F;
return (0x6996 >> x) & 1;
x = (x ^ (x >> 4)) & 0x0F;
return (0x6996 >> x) & 1;
}
/*- End of function --------------------------------------------------------*/

/*! \brief Find the parity of a 16 bit word.
\param x The word to be checked.
\return 1 for odd, or 0 for even. */
static __inline__ int parity16(uint16_t x)
{
x ^= (x >> 8);
x = (x ^ (x >> 4)) & 0x0F;
return (0x6996 >> x) & 1;
x ^= (x >> 8);
x = (x ^ (x >> 4)) & 0x0F;
return (0x6996 >> x) & 1;
}
/*- End of function --------------------------------------------------------*/

/*! \brief Find the parity of a 32 bit word.
\param x The word to be checked.
\return 1 for odd, or 0 for even. */
static __inline__ int parity32(uint32_t x)
{
x ^= (x >> 16);
x ^= (x >> 8);
x = (x ^ (x >> 4)) & 0x0F;
return (0x6996 >> x) & 1;
x ^= (x >> 16);
x ^= (x >> 8);
x = (x ^ (x >> 4)) & 0x0F;
return (0x6996 >> x) & 1;
}
/*- End of function --------------------------------------------------------*/

#ifdef __cplusplus
}
#endif

#endif
/*- End of file ------------------------------------------------------------*/
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