[tip: timers/core] arm64: vdso32: Code clean up

["tip-bot2 for Vincenzo Frascino" <tip-bot2@linutronix.de>]

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     94d0f5be885ce1e6ca2886af1543165c16745d13
Gitweb:        https://git.kernel.org/tip/94d0f5be885ce1e6ca2886af1543165c16745d13
Author:        Vincenzo Frascino <vincenzo.frascino@arm.com>
AuthorDate:    Fri, 20 Mar 2020 14:53:43 
Committer:     Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Sat, 21 Mar 2020 15:24:00 +01:00

arm64: vdso32: Code clean up

The compat vdso library had some checks that are not anymore relevant.

Remove the unused code from the compat vDSO library.

Note: This patch is preparatory for a future one that will introduce
asm/vdso/processor.h on arm64.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/lkml/20200317122220.30393-19-vincenzo.frascino@arm.com
Link: https://lkml.kernel.org/r/20200320145351.32292-19-vincenzo.frascino@arm.com

---
 arch/arm64/include/asm/vdso/compat_gettimeofday.h |  8 --------
 arch/arm64/kernel/vdso32/vgettimeofday.c          | 12 ------------
 2 files changed, 20 deletions(-)

diff --git a/arch/arm64/include/asm/vdso/compat_gettimeofday.h b/arch/arm64/include/asm/vdso/compat_gettimeofday.h
index 81b0c39..401df2b 100644
--- a/arch/arm64/include/asm/vdso/compat_gettimeofday.h
+++ b/arch/arm64/include/asm/vdso/compat_gettimeofday.h
@@ -76,10 +76,6 @@ int clock_getres_fallback(clockid_t _clkid, struct __kernel_timespec *_ts)
 	register long ret asm ("r0");
 	register long nr asm("r7") = __NR_compat_clock_getres_time64;
 
-	/* The checks below are required for ABI consistency with arm */
-	if ((_clkid >= MAX_CLOCKS) && (_ts == NULL))
-		return -EINVAL;
-
 	asm volatile(
 	"       swi #0\n"
 	: "=r" (ret)
@@ -97,10 +93,6 @@ int clock_getres32_fallback(clockid_t _clkid, struct old_timespec32 *_ts)
 	register long ret asm ("r0");
 	register long nr asm("r7") = __NR_compat_clock_getres;
 
-	/* The checks below are required for ABI consistency with arm */
-	if ((_clkid >= MAX_CLOCKS) && (_ts == NULL))
-		return -EINVAL;
-
 	asm volatile(
 	"       swi #0\n"
 	: "=r" (ret)
diff --git a/arch/arm64/kernel/vdso32/vgettimeofday.c b/arch/arm64/kernel/vdso32/vgettimeofday.c
index 54fc1c2..ddbad47 100644
--- a/arch/arm64/kernel/vdso32/vgettimeofday.c
+++ b/arch/arm64/kernel/vdso32/vgettimeofday.c
@@ -11,20 +11,12 @@
 int __vdso_clock_gettime(clockid_t clock,
 			 struct old_timespec32 *ts)
 {
-	/* The checks below are required for ABI consistency with arm */
-	if ((u32)ts >= TASK_SIZE_32)
-		return -EFAULT;
-
 	return __cvdso_clock_gettime32(clock, ts);
 }
 
 int __vdso_clock_gettime64(clockid_t clock,
 			   struct __kernel_timespec *ts)
 {
-	/* The checks below are required for ABI consistency with arm */
-	if ((u32)ts >= TASK_SIZE_32)
-		return -EFAULT;
-
 	return __cvdso_clock_gettime(clock, ts);
 }
 
@@ -37,10 +29,6 @@ int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
 int __vdso_clock_getres(clockid_t clock_id,
 			struct old_timespec32 *res)
 {
-	/* The checks below are required for ABI consistency with arm */
-	if ((u32)res >= TASK_SIZE_32)
-		return -EFAULT;
-
 	return __cvdso_clock_getres_time32(clock_id, res);
 }