aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2014-05-29 18:31:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-05-29 18:31:09 -0700
commitfe45736f4134b9656c656ac5e15b915192f2704a (patch)
tree0e3500989e80afa2443f8cfd3d70e8f632d1c472
parenta991639c26c7231ddb6de7f34899fb70832b7d04 (diff)
parent3f8517e7937d04ac7df9082c741fefc9c873065b (diff)
downloadlinux-fe45736f4134b9656c656ac5e15b915192f2704a.tar.gz
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King: "The usual random collection of relatively small ARM fixes" * 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: ARM: 8063/1: bL_switcher: fix individual online status reporting of removed CPUs ARM: 8064/1: fix v7-M signal return ARM: 8057/1: amba: Add Qualcomm vendor ID. ARM: 8052/1: unwind: Fix handling of "Pop r4-r[4+nnn],r14" opcode ARM: 8051/1: put_user: fix possible data corruption in put_user ARM: 8048/1: fix v7-M setup stack location
-rw-r--r--arch/arm/common/bL_switcher.c10
-rw-r--r--arch/arm/include/asm/uaccess.h3
-rw-r--r--arch/arm/kernel/entry-header.S4
-rw-r--r--arch/arm/kernel/unwind.c2
-rw-r--r--arch/arm/mm/proc-v7m.S8
-rw-r--r--include/linux/amba/bus.h1
6 files changed, 20 insertions, 8 deletions
diff --git a/arch/arm/common/bL_switcher.c b/arch/arm/common/bL_switcher.c
index f01c0ee0c87..490f3dced74 100644
--- a/arch/arm/common/bL_switcher.c
+++ b/arch/arm/common/bL_switcher.c
@@ -433,8 +433,12 @@ static void bL_switcher_restore_cpus(void)
{
int i;
- for_each_cpu(i, &bL_switcher_removed_logical_cpus)
- cpu_up(i);
+ for_each_cpu(i, &bL_switcher_removed_logical_cpus) {
+ struct device *cpu_dev = get_cpu_device(i);
+ int ret = device_online(cpu_dev);
+ if (ret)
+ dev_err(cpu_dev, "switcher: unable to restore CPU\n");
+ }
}
static int bL_switcher_halve_cpus(void)
@@ -521,7 +525,7 @@ static int bL_switcher_halve_cpus(void)
continue;
}
- ret = cpu_down(i);
+ ret = device_offline(get_cpu_device(i));
if (ret) {
bL_switcher_restore_cpus();
return ret;
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index 12c3a5decc6..75d95799b6e 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -171,8 +171,9 @@ extern int __put_user_8(void *, unsigned long long);
#define __put_user_check(x,p) \
({ \
unsigned long __limit = current_thread_info()->addr_limit - 1; \
+ const typeof(*(p)) __user *__tmp_p = (p); \
register const typeof(*(p)) __r2 asm("r2") = (x); \
- register const typeof(*(p)) __user *__p asm("r0") = (p);\
+ register const typeof(*(p)) __user *__p asm("r0") = __tmp_p; \
register unsigned long __l asm("r1") = __limit; \
register int __e asm("r0"); \
switch (sizeof(*(__p))) { \
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index 1420725142c..efb208de75e 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -132,6 +132,10 @@
orrne r5, V7M_xPSR_FRAMEPTRALIGN
biceq r5, V7M_xPSR_FRAMEPTRALIGN
+ @ ensure bit 0 is cleared in the PC, otherwise behaviour is
+ @ unpredictable
+ bic r4, #1
+
@ write basic exception frame
stmdb r2!, {r1, r3-r5}
ldmia sp, {r1, r3-r5}
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c
index 3c217694ebe..cb791ac6a00 100644
--- a/arch/arm/kernel/unwind.c
+++ b/arch/arm/kernel/unwind.c
@@ -285,7 +285,7 @@ static int unwind_exec_pop_r4_to_rN(struct unwind_ctrl_block *ctrl,
if (unwind_pop_register(ctrl, &vsp, reg))
return -URC_FAILURE;
- if (insn & 0x80)
+ if (insn & 0x8)
if (unwind_pop_register(ctrl, &vsp, 14))
return -URC_FAILURE;
diff --git a/arch/arm/mm/proc-v7m.S b/arch/arm/mm/proc-v7m.S
index 0c93588fcb9..1ca37c72f12 100644
--- a/arch/arm/mm/proc-v7m.S
+++ b/arch/arm/mm/proc-v7m.S
@@ -123,6 +123,11 @@ __v7m_setup:
mov pc, lr
ENDPROC(__v7m_setup)
+ .align 2
+__v7m_setup_stack:
+ .space 4 * 8 @ 8 registers
+__v7m_setup_stack_top:
+
define_processor_functions v7m, dabort=nommu_early_abort, pabort=legacy_pabort, nommu=1
.section ".rodata"
@@ -152,6 +157,3 @@ __v7m_proc_info:
.long nop_cache_fns @ proc_info_list.cache
.size __v7m_proc_info, . - __v7m_proc_info
-__v7m_setup_stack:
- .space 4 * 8 @ 8 registers
-__v7m_setup_stack_top:
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 63b5eff0a80..fdd7e1b61f6 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -47,6 +47,7 @@ struct amba_driver {
enum amba_vendor {
AMBA_VENDOR_ARM = 0x41,
AMBA_VENDOR_ST = 0x80,
+ AMBA_VENDOR_QCOM = 0x51,
};
extern struct bus_type amba_bustype;