aboutsummaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/avr32/mach-at32ap/at32ap700x.c15
-rw-r--r--arch/microblaze/kernel/setup.c1
-rw-r--r--arch/powerpc/mm/tlb_hash64.c12
-rw-r--r--arch/powerpc/platforms/pseries/xics.c14
-rw-r--r--arch/sh/kernel/cpu/sh3/entry.S3
-rw-r--r--arch/sh/kernel/dwarf.c20
-rw-r--r--arch/sh/kernel/entry-common.S8
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k8.c3
8 files changed, 62 insertions, 14 deletions
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index 1aa1ea5e921..b13d1879e51 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -1325,7 +1325,7 @@ struct platform_device *__init
at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
{
struct platform_device *pdev;
- struct mci_dma_slave *slave;
+ struct mci_dma_data *slave;
u32 pioa_mask;
u32 piob_mask;
@@ -1344,7 +1344,9 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
ARRAY_SIZE(atmel_mci0_resource)))
goto fail;
- slave = kzalloc(sizeof(struct mci_dma_slave), GFP_KERNEL);
+ slave = kzalloc(sizeof(struct mci_dma_data), GFP_KERNEL);
+ if (!slave)
+ goto fail;
slave->sdata.dma_dev = &dw_dmac0_device.dev;
slave->sdata.reg_width = DW_DMA_SLAVE_WIDTH_32BIT;
@@ -1357,7 +1359,7 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
if (platform_device_add_data(pdev, data,
sizeof(struct mci_platform_data)))
- goto fail;
+ goto fail_free;
/* CLK line is common to both slots */
pioa_mask = 1 << 10;
@@ -1381,7 +1383,7 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
/* Slot is unused */
break;
default:
- goto fail;
+ goto fail_free;
}
select_peripheral(PIOA, pioa_mask, PERIPH_A, 0);
@@ -1408,7 +1410,7 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
break;
default:
if (!data->slot[0].bus_width)
- goto fail;
+ goto fail_free;
data->slot[1].bus_width = 0;
break;
@@ -1419,9 +1421,10 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
platform_device_add(pdev);
return pdev;
+fail_free:
+ kfree(slave);
fail:
data->dma_slave = NULL;
- kfree(slave);
platform_device_put(pdev);
return NULL;
}
diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
index 5372b24ad04..bb8c4b9ccb8 100644
--- a/arch/microblaze/kernel/setup.c
+++ b/arch/microblaze/kernel/setup.c
@@ -54,6 +54,7 @@ void __init setup_arch(char **cmdline_p)
microblaze_cache_init();
+ invalidate_dcache();
enable_dcache();
invalidate_icache();
diff --git a/arch/powerpc/mm/tlb_hash64.c b/arch/powerpc/mm/tlb_hash64.c
index 282d9306361..1ec06576f61 100644
--- a/arch/powerpc/mm/tlb_hash64.c
+++ b/arch/powerpc/mm/tlb_hash64.c
@@ -63,15 +63,21 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
if (huge) {
#ifdef CONFIG_HUGETLB_PAGE
psize = get_slice_psize(mm, addr);
+ /* Mask the address for the correct page size */
+ addr &= ~((1UL << mmu_psize_defs[psize].shift) - 1);
#else
BUG();
psize = pte_pagesize_index(mm, addr, pte); /* shutup gcc */
#endif
- } else
+ } else {
psize = pte_pagesize_index(mm, addr, pte);
+ /* Mask the address for the standard page size. If we
+ * have a 64k page kernel, but the hardware does not
+ * support 64k pages, this might be different from the
+ * hardware page size encoded in the slice table. */
+ addr &= PAGE_MASK;
+ }
- /* Mask the address for the correct page size */
- addr &= ~((1UL << mmu_psize_defs[psize].shift) - 1);
/* Build full vaddr */
if (!is_kernel_addr(addr)) {
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 1ee66db003b..f5f79196721 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -784,9 +784,13 @@ static void xics_set_cpu_priority(unsigned char cppr)
{
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_setup_cpu(void)
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 3f7e2a22c7c..f6a389c996c 100644
--- a/arch/sh/kernel/cpu/sh3/entry.S
+++ b/arch/sh/kernel/cpu/sh3/entry.S
@@ -132,7 +132,6 @@ ENTRY(tlb_protection_violation_store)
mov #1, r5
call_handle_tlbmiss:
- setup_frame_reg
mov.l 1f, r0
mov r5, r8
mov.l @r0, r6
@@ -365,6 +364,8 @@ handle_exception:
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 88d28ec3780..e51168064e5 100644
--- a/arch/sh/kernel/dwarf.c
+++ b/arch/sh/kernel/dwarf.c
@@ -540,6 +540,8 @@ void dwarf_free_frame(struct dwarf_frame *frame)
mempool_free(frame, dwarf_frame_pool);
}
+extern void ret_from_irq(void);
+
/**
* dwarf_unwind_stack - unwind the stack
*
@@ -678,6 +680,24 @@ struct dwarf_frame * dwarf_unwind_stack(unsigned long pc,
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 f0abd58c3a6..2b15ae60c3a 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -70,8 +70,14 @@ ret_from_exception:
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/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index f125e5c551c..6e44519960c 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1356,6 +1356,7 @@ static int __devexit powernowk8_cpu_exit(struct cpufreq_policy *pol)
kfree(data->powernow_table);
kfree(data);
+ per_cpu(powernow_data, pol->cpu) = NULL;
return 0;
}
@@ -1375,7 +1376,7 @@ static unsigned int powernowk8_get(unsigned int cpu)
int err;
if (!data)
- return -EINVAL;
+ return 0;
smp_call_function_single(cpu, query_values_on_cpu, &err, true);
if (err)
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-29 23:54:15 +0000