Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Invalidate dcache before enabling it
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 1ee66db..f5f7919 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -784,9 +784,13 @@
{
struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
- BUG_ON(os_cppr->index != 0);
+ /*
+ * we only really want to set the priority when there's
+ * just one cppr value on the stack
+ */
+ WARN_ON(os_cppr->index != 0);
- os_cppr->stack[os_cppr->index] = cppr;
+ os_cppr->stack[0] = cppr;
if (firmware_has_feature(FW_FEATURE_LPAR))
lpar_cppr_info(cppr);
@@ -821,8 +825,14 @@
void xics_teardown_cpu(void)
{
+ struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
int cpu = smp_processor_id();
+ /*
+ * we have to reset the cppr index to 0 because we're
+ * not going to return from the IPI
+ */
+ os_cppr->index = 0;
xics_set_cpu_priority(0);
/* Clear any pending IPI request */
diff --git a/arch/sh/kernel/cpu/sh3/entry.S b/arch/sh/kernel/cpu/sh3/entry.S
index 3f7e2a2..f6a389c 100644
--- a/arch/sh/kernel/cpu/sh3/entry.S
+++ b/arch/sh/kernel/cpu/sh3/entry.S
@@ -132,7 +132,6 @@
mov #1, r5
call_handle_tlbmiss:
- setup_frame_reg
mov.l 1f, r0
mov r5, r8
mov.l @r0, r6
@@ -365,6 +364,8 @@
mov.l @k2, k2 ! read out vector and keep in k2
handle_exception_special:
+ setup_frame_reg
+
! Setup return address and jump to exception handler
mov.l 7f, r9 ! fetch return address
stc r2_bank, r0 ! k2 (vector)
diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c
index 88d28ec..e511680 100644
--- a/arch/sh/kernel/dwarf.c
+++ b/arch/sh/kernel/dwarf.c
@@ -540,6 +540,8 @@
mempool_free(frame, dwarf_frame_pool);
}
+extern void ret_from_irq(void);
+
/**
* dwarf_unwind_stack - unwind the stack
*
@@ -678,6 +680,24 @@
addr = frame->cfa + reg->addr;
frame->return_addr = __raw_readl(addr);
+ /*
+ * Ah, the joys of unwinding through interrupts.
+ *
+ * Interrupts are tricky - the DWARF info needs to be _really_
+ * accurate and unfortunately I'm seeing a lot of bogus DWARF
+ * info. For example, I've seen interrupts occur in epilogues
+ * just after the frame pointer (r14) had been restored. The
+ * problem was that the DWARF info claimed that the CFA could be
+ * reached by using the value of the frame pointer before it was
+ * restored.
+ *
+ * So until the compiler can be trusted to produce reliable
+ * DWARF info when it really matters, let's stop unwinding once
+ * we've calculated the function that was interrupted.
+ */
+ if (prev && prev->pc == (unsigned long)ret_from_irq)
+ frame->return_addr = 0;
+
return frame;
bail:
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index f0abd58..2b15ae6 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -70,8 +70,14 @@
CFI_STARTPROC simple
CFI_DEF_CFA r14, 0
CFI_REL_OFFSET 17, 64
- CFI_REL_OFFSET 15, 0
+ CFI_REL_OFFSET 15, 60
CFI_REL_OFFSET 14, 56
+ CFI_REL_OFFSET 13, 52
+ CFI_REL_OFFSET 12, 48
+ CFI_REL_OFFSET 11, 44
+ CFI_REL_OFFSET 10, 40
+ CFI_REL_OFFSET 9, 36
+ CFI_REL_OFFSET 8, 32
preempt_stop()
ENTRY(ret_from_irq)
!
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 0ceec12..bee558ae 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -35,7 +35,9 @@
#include <linux/usb.h>
#include <linux/platform_device.h>
#include <linux/io.h>
+#include <linux/mm.h>
#include <linux/irq.h>
+#include <asm/cacheflush.h>
#include "../core/hcd.h"
#include "r8a66597.h"
@@ -820,6 +822,26 @@
enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
}
+static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb,
+ int status)
+__releases(r8a66597->lock)
+__acquires(r8a66597->lock)
+{
+ if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) {
+ void *ptr;
+
+ for (ptr = urb->transfer_buffer;
+ ptr < urb->transfer_buffer + urb->transfer_buffer_length;
+ ptr += PAGE_SIZE)
+ flush_dcache_page(virt_to_page(ptr));
+ }
+
+ usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
+ spin_unlock(&r8a66597->lock);
+ usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status);
+ spin_lock(&r8a66597->lock);
+}
+
/* this function must be called with interrupt disabled */
static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
{
@@ -838,15 +860,9 @@
list_del(&td->queue);
kfree(td);
- if (urb) {
- usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
- urb);
+ if (urb)
+ r8a66597_urb_done(r8a66597, urb, -ENODEV);
- spin_unlock(&r8a66597->lock);
- usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
- -ENODEV);
- spin_lock(&r8a66597->lock);
- }
break;
}
}
@@ -1006,6 +1022,8 @@
/* this function must be called with interrupt disabled */
static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
u16 syssts)
+__releases(r8a66597->lock)
+__acquires(r8a66597->lock)
{
if (syssts == SE0) {
r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
@@ -1023,7 +1041,9 @@
usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
}
+ spin_unlock(&r8a66597->lock);
usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597));
+ spin_lock(&r8a66597->lock);
}
/* this function must be called with interrupt disabled */
@@ -1283,10 +1303,7 @@
if (usb_pipeisoc(urb->pipe))
urb->start_frame = r8a66597_get_frame(hcd);
- usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
- spin_unlock(&r8a66597->lock);
- usb_hcd_giveback_urb(hcd, urb, status);
- spin_lock(&r8a66597->lock);
+ r8a66597_urb_done(r8a66597, urb, status);
}
if (restart) {