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Commit 3cc5a2ee authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm 

Pull arm fixes from Russell King:
 "Not much here again.

  The two most notable things here are the sched_clock() fix, which was
  causing problems with the scheduling of threaded IRQs after a suspend
  event, and the vfp fix, which afaik has only been seen on some older
  OMAP boards.  Nevertheless, both are fairly important fixes."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7569/1: mm: uninitialized warning corrections
  ARM: 7567/1: io: avoid GCC's offsettable addressing modes for halfword accesses
  ARM: 7566/1: vfp: fix save and restore when running on pre-VFPv3 and CONFIG_VFPv3 set
  ARM: 7565/1: sched: stop sched_clock() during suspend
parents 3d70f8c6 6404f0b7

arch/arm/include/asm/io.h

+2 −2
Original line number Original line Diff line number Diff line
@@ -64,7 +64,7 @@ extern void __raw_readsl(const void __iomem *addr, void *data, int longlen); 
static inline void __raw_writew(u16 val, volatile void __iomem *addr)

static inline void __raw_writew(u16 val, volatile void __iomem *addr)

{

{

	asm volatile("strh %1, %0"

	asm volatile("strh %1, %0"

		     : "+Qo" (*(volatile u16 __force *)addr)

		     : "+Q" (*(volatile u16 __force *)addr)

		     : "r" (val));

		     : "r" (val));

}

}
@@ -72,7 +72,7 @@ static inline u16 __raw_readw(const volatile void __iomem *addr) 
{

{

	u16 val;

	u16 val;

	asm volatile("ldrh %1, %0"

	asm volatile("ldrh %1, %0"

		     : "+Qo" (*(volatile u16 __force *)addr),

		     : "+Q" (*(volatile u16 __force *)addr),

		       "=r" (val));

		       "=r" (val));

	return val;

	return val;

}

}

arch/arm/include/asm/sched_clock.h

+0 −2
Original line number Original line Diff line number Diff line
@@ -10,7 +10,5 @@ 




extern void sched_clock_postinit(void);

extern void sched_clock_postinit(void);

extern void setup_sched_clock(u32 (*read)(void), int bits, unsigned long rate);

extern void setup_sched_clock(u32 (*read)(void), int bits, unsigned long rate);

extern void setup_sched_clock_needs_suspend(u32 (*read)(void), int bits,

		unsigned long rate);





#endif
 
#endif

arch/arm/include/asm/vfpmacros.h

+6 −6
Original line number Original line Diff line number Diff line
@@ -27,9 +27,9 @@ 
#if __LINUX_ARM_ARCH__ <= 6

#if __LINUX_ARM_ARCH__ <= 6

	ldr	\tmp, =elf_hwcap		    @ may not have MVFR regs

	ldr	\tmp, =elf_hwcap		    @ may not have MVFR regs

	ldr	\tmp, [\tmp, #0]

	ldr	\tmp, [\tmp, #0]

	tst	\tmp, #HWCAP_VFPv3D16

	tst	\tmp, #HWCAP_VFPD32

	ldceql	p11, cr0, [\base],#32*4		    @ FLDMIAD \base!, {d16-d31}

	ldcnel	p11, cr0, [\base],#32*4		    @ FLDMIAD \base!, {d16-d31}

	addne	\base, \base, #32*4		    @ step over unused register space

	addeq	\base, \base, #32*4		    @ step over unused register space

#else

#else

	VFPFMRX	\tmp, MVFR0			    @ Media and VFP Feature Register 0

	VFPFMRX	\tmp, MVFR0			    @ Media and VFP Feature Register 0

	and	\tmp, \tmp, #MVFR0_A_SIMD_MASK	    @ A_SIMD field

	and	\tmp, \tmp, #MVFR0_A_SIMD_MASK	    @ A_SIMD field
@@ -51,9 +51,9 @@ 
#if __LINUX_ARM_ARCH__ <= 6

#if __LINUX_ARM_ARCH__ <= 6

	ldr	\tmp, =elf_hwcap		    @ may not have MVFR regs

	ldr	\tmp, =elf_hwcap		    @ may not have MVFR regs

	ldr	\tmp, [\tmp, #0]

	ldr	\tmp, [\tmp, #0]

	tst	\tmp, #HWCAP_VFPv3D16

	tst	\tmp, #HWCAP_VFPD32

	stceql	p11, cr0, [\base],#32*4		    @ FSTMIAD \base!, {d16-d31}

	stcnel	p11, cr0, [\base],#32*4		    @ FSTMIAD \base!, {d16-d31}

	addne	\base, \base, #32*4		    @ step over unused register space

	addeq	\base, \base, #32*4		    @ step over unused register space

#else

#else

	VFPFMRX	\tmp, MVFR0			    @ Media and VFP Feature Register 0

	VFPFMRX	\tmp, MVFR0			    @ Media and VFP Feature Register 0

	and	\tmp, \tmp, #MVFR0_A_SIMD_MASK	    @ A_SIMD field

	and	\tmp, \tmp, #MVFR0_A_SIMD_MASK	    @ A_SIMD field

arch/arm/include/uapi/asm/hwcap.h

+2 −1
Original line number Original line Diff line number Diff line
@@ -18,11 +18,12 @@ 
#define HWCAP_THUMBEE	(1 << 11)

#define HWCAP_THUMBEE	(1 << 11)

#define HWCAP_NEON	(1 << 12)

#define HWCAP_NEON	(1 << 12)

#define HWCAP_VFPv3	(1 << 13)

#define HWCAP_VFPv3	(1 << 13)

#define HWCAP_VFPv3D16	(1 << 14)

#define HWCAP_VFPv3D16	(1 << 14)	/* also set for VFPv4-D16 */

#define HWCAP_TLS	(1 << 15)

#define HWCAP_TLS	(1 << 15)

#define HWCAP_VFPv4	(1 << 16)

#define HWCAP_VFPv4	(1 << 16)

#define HWCAP_IDIVA	(1 << 17)

#define HWCAP_IDIVA	(1 << 17)

#define HWCAP_IDIVT	(1 << 18)

#define HWCAP_IDIVT	(1 << 18)

#define HWCAP_VFPD32	(1 << 19)	/* set if VFP has 32 regs (not 16) */

#define HWCAP_IDIV	(HWCAP_IDIVA | HWCAP_IDIVT)

#define HWCAP_IDIV	(HWCAP_IDIVA | HWCAP_IDIVT)

arch/arm/kernel/sched_clock.c

+4 −14
Original line number Original line Diff line number Diff line
@@ -107,13 +107,6 @@ static void sched_clock_poll(unsigned long wrap_ticks) 
	update_sched_clock();

	update_sched_clock();

}

}





void __init setup_sched_clock_needs_suspend(u32 (*read)(void), int bits,

		unsigned long rate)

{

	setup_sched_clock(read, bits, rate);

	cd.needs_suspend = true;

}



void __init setup_sched_clock(u32 (*read)(void), int bits, unsigned long rate)

void __init setup_sched_clock(u32 (*read)(void), int bits, unsigned long rate)

{

{

	unsigned long r, w;

	unsigned long r, w;
@@ -189,19 +182,16 @@ void __init sched_clock_postinit(void) 
static int sched_clock_suspend(void)

static int sched_clock_suspend(void)

{

{

	sched_clock_poll(sched_clock_timer.data);

	sched_clock_poll(sched_clock_timer.data);

	if (cd.needs_suspend)

	cd.suspended = true;

	cd.suspended = true;

	return 0;

	return 0;

}

}





static void sched_clock_resume(void)

static void sched_clock_resume(void)

{

{

	if (cd.needs_suspend) {

	cd.epoch_cyc = read_sched_clock();

	cd.epoch_cyc = read_sched_clock();

	cd.epoch_cyc_copy = cd.epoch_cyc;

	cd.epoch_cyc_copy = cd.epoch_cyc;

	cd.suspended = false;

	cd.suspended = false;

}

}

}





static struct syscore_ops sched_clock_ops = {

static struct syscore_ops sched_clock_ops = {

	.suspend = sched_clock_suspend,

	.suspend = sched_clock_suspend,