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This is the prevent previous stores from overlapping the block stores
done by the memcpy loop.
Based upon a glibc patch by Jose E. Marchesi
Signed-off-by: David S. Miller <davem@davemloft.net>
Access to the TSB hash tables during TLB misses requires that there be
an atomic 128-bit quad load available so that we fetch a matching TAG
and DATA field at the same time.
On cpus prior to UltraSPARC-III only virtual address based quad loads
are available. UltraSPARC-III and later provide physical address
based variants which are easier to use.
When we only have virtual address based quad loads available this
means that we have to lock the TSB into the TLB at a fixed virtual
address on each cpu when it runs that process. We can't just access
the PAGE_OFFSET based aliased mapping of these TSBs because we cannot
take a recursive TLB miss inside of the TLB miss handler without
risking running out of hardware trap levels (some trap combinations
can be deep, such as those generated by register window spill and fill
traps).
Without huge pages it's working perfectly fine, but when the huge TSB
got added another chunk of fixed virtual address space was not
allocated for this second TSB mapping.
So we were mapping both the 8K and 4MB TSBs to the same exact virtual
address, causing multiple TLB matches which gives undefined behavior.
Signed-off-by: David S. Miller <davem@davemloft.net>
This was found using Dave Jone's trinity tool.
When a user process which is 32-bit performs a load or a store, the
cpu chops off the top 32-bits of the effective address before
translating it.
This is because we run 32-bit tasks with the PSTATE_AM (address
masking) bit set.
We can't run the kernel with that bit set, so when the kernel accesses
userspace no address masking occurs.
Since a 32-bit process will have no mappings in that region we will
properly fault, so we don't try to handle this using access_ok(),
which can safely just be a NOP on sparc64.
Real faults from 32-bit processes should never generate such addresses
so a bug check was added long ago, and it barks in the logs if this
happens.
But it also barks when a kernel user access causes this condition, and
that _can_ happen. For example, if a pointer passed into a system call
is "0xfffffffc" and the kernel access 4 bytes offset from that pointer.
Just handle such faults normally via the exception entries.
Signed-off-by: David S. Miller <davem@davemloft.net>
pte_ERROR() is not used anywhere, delete it.
For pgd_ERROR() and pmd_ERROR(), output something similar to x86, giving the address
of the pgd/pmd as well as it's value.
Also provide the caller, since these macros are invoked from pgd_clear_bad() and
pmd_clear_bad() which provides little context as to what high level operation was
occuring when the BAD state was detected.
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of returning false we should at least check the most basic
things, otherwise page table corruptions will be very difficult to
debug.
PMD and PTE tables are of size PAGE_SIZE, so none of the sub-PAGE_SIZE
bits should be set.
We also complement this with a check that the physical address the
pud/pmd points to is valid memory.
PowerPC was used as a guide while implementating this.
Signed-off-by: David S. Miller <davem@davemloft.net>
In commit b2d438348024b75a1ee8b66b85d77f569a5dfed8 ("sparc64: Make
PAGE_OFFSET variable."), the MAX_PHYS_ADDRESS_BITS value was increased
(to 47).
This constant reference to '41UL' was missed.
Signed-off-by: David S. Miller <davem@davemloft.net>
Make get_user_insn() able to cope with huge PMDs.
Next, make do_fault_siginfo() more robust when get_user_insn() can't
actually fetch the instruction. In particular, use the MMU announced
fault address when that happens, instead of calling
compute_effective_address() and computing garbage.
Signed-off-by: David S. Miller <davem@davemloft.net>
If we have a 32-bit task we must chop off the top 32-bits of the
64-bit value just as the cpu would.
Signed-off-by: David S. Miller <davem@davemloft.net>
The large PMD path needs to check _PAGE_VALID not _PAGE_PRESENT, to
decide if it needs to bail and return 0.
pmd_large() should therefore just check _PAGE_PMD_HUGE.
Calls to gup_huge_pmd() are guarded with a check of pmd_large(), so we
just need to add a valid bit check.
Signed-off-by: David S. Miller <davem@davemloft.net>
On sparc64 "present" and "valid" are seperate PTE bits, this allows us to
naturally distinguish between the user explicitly asking for PROT_NONE
with mprotect() and other situations.
However we weren't handling this properly in the huge PMD paths.
First of all, the page table walker in the TSB miss path only checks
for _PAGE_PMD_HUGE. So the generic pmdp_invalidate() would clear
_PAGE_PRESENT but the TLB miss paths would still load it into the TLB
as a valid huge PMD.
Fix this by clearing the valid bit in pmdp_invalidate(), and also
checking the valid bit in USER_PGTABLE_CHECK_PMD_HUGE using "brgez"
since _PAGE_VALID is bit 63 in both the sun4u and sun4v pte layouts.
Signed-off-by: David S. Miller <davem@davemloft.net>
This code was mistakenly using the exec bit from the PMD in all
cases, even when the PMD isn't a huge PMD.
If it's not a huge PMD, test the exec bit in the individual ptes down
in tlb_batch_pmd_scan().
Signed-off-by: David S. Miller <davem@davemloft.net>
Bring this code in line with the perf based generic NMI watchdog
in kernel/watchdog.c (which we should convert over to at some
point).
In particular, don't do anything super fancy when the watchdog
triggers, and specifically don't do a do_exit() which only makes
things worse.
Either panic(), or WARN(). The latter of which will do all of
the actions such as give us a stack backtrace.
Signed-off-by: David S. Miller <davem@davemloft.net>
After introducing asm-generic/io.h a few things could still be cleaned up
o Drop useless macro indirection for sbus_* io access methods
They were in the past used to hide casts between long and pointers
but this is no longer so
o Fix function definitions for sbus memory functions so
return value appear on same line as function name
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use asm-generic/io.h definitions where applicable.
The inxx() and outxx() methods whcih was duplicated in pcic.c +
leon_pci.c are replaced by a set of static inlins from asm-generic/io.h
iomap.c is replaced by the generic versions, but are still
present to support sparc64.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The latter is a generic implmentation.
flip_{,d}word() is sparc32 specific and will be dropped.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Preparation for introducing asm-generic/io.h this move was required.
In asm-generic page_to_phys is placed in page.h - so do the same here.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
One more place where we must not be able
to be preempted or to be interrupted in RT.
Always actually disable interrupts during
synchronization cycle.
Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
leon_smp.c:133:6: warning: symbol 'leon_smp_setbroadcast' was not declared. Should it be static?
leon_smp.c:151:14: warning: symbol 'leon_smp_getbroadcast' was not declared. Should it be static?
leon_smp.c:269:6: warning: symbol 'leon_irq_rotate' was not declared. Should it be static?
leon_smp.c:355:6: warning: symbol 'leonsmp_ipi_interrupt' was not declared. Should it be static?
leon_smp.c:457:6: warning: symbol 'leon_cross_call_irq' was not declared. Should it be static?
Add static.
Remove unused functions.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
sun4d_smp.c:113:13: warning: symbol 'smp4d_boot_cpus' was not declared. Should it be static?
sun4d_smp.c:121:5: warning: symbol 'smp4d_boot_one_cpu' was not declared. Should it be static?
sun4d_smp.c:162:13: warning: symbol 'smp4d_smp_done' was not declared. Should it be static?
sun4d_smp.c:353:6: warning: symbol 'smp4d_cross_call_irq' was not declared. Should it be static?
sun4d_smp.c:363:6: warning: symbol 'smp4d_percpu_timer_interrupt' was not declared. Should it be static?
Add proper declarations
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
sun4m_smp.c:72:13: warning: symbol 'smp4m_boot_cpus' was not declared. Should it be static?
sun4m_smp.c:78:5: warning: symbol 'smp4m_boot_one_cpu' was not declared. Should it be static?
sun4m_smp.c:120:13: warning: symbol 'smp4m_smp_done' was not declared. Should it be static?
sun4m_smp.c:230:6: warning: symbol 'smp4m_cross_call_irq' was not declared. Should it be static?
sun4m_smp.c:240:6: warning: symbol 'smp4m_percpu_timer_interrupt' was not declared. Should it be static?
Add proper declarations.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
leon_pmc.c:15:14: warning: symbol 'pmc_leon_fixup_ids' was not declared. Should it be static?
leon_pmc.c:22:5: warning: symbol 'pmc_leon_need_fixup' was not declared. Should it be static?
leon_pmc.c:41:6: warning: symbol 'pmc_leon_idle_fixup' was not declared. Should it be static?
leon_pmc.c:65:6: warning: symbol 'pmc_leon_idle' was not declared. Should it be static?
Add static to definitions.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
leon_kernel.c:40:15: warning: symbol 'leon3_gptimer_idx' was not declared. Should it be static?
leon_kernel.c:68:6: warning: symbol 'leon_eirq_setup' was not declared. Should it be static?
leon_kernel.c:273:13: warning: symbol 'leon_percpu_timer_ce_interrupt' was not declared. Should it be static?
Define symbols as static.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings (both sparc32 and sparc64):
of_device_common.c:13:14: warning: symbol 'irq_of_parse_and_map' was not declared. Should it be static?
of_device_common.c:24:5: warning: symbol 'of_address_to_resource' was not declared. Should it be static?
of_device_common.c:37:14: warning: symbol 'of_iomap' was not declared. Should it be static?
Add missing includes.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
unaligned_32.c:146:15: warning: symbol 'safe_compute_effective_address' was not declared. Should it be static?
unaligned_32.c:235:17: warning: symbol 'kernel_unaligned_trap' was not declared. Should it be static?
unaligned_32.c:319:17: warning: symbol 'user_unaligned_trap' was not declared. Should it be static?
Add proper declarations in kernel.h + setup.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warning:
ptrace_32.c:444:16: warning: symbol 'syscall_trace' was not declared. Should it be static?
Add declaration in kernel.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
smp_32.c:300:6: warning: symbol 'arch_cpu_pre_starting' was not declared. Should it be static?
smp_32.c:320:6: warning: symbol 'arch_cpu_pre_online' was not declared. Should it be static?
smp_32.c:347:6: warning: symbol 'sparc_start_secondary' was not declared. Should it be static?
Add missing static definition.
This left one warning:
warning: symbol 'setup_profiling_timer' was not declared.
This is a global symbol that has no declaration in any global header.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
auxio_32.c:23:14: warning: symbol 'auxio_register' was not declared. Should it be static?
auxio_32.c:26:13: warning: symbol 'auxio_probe' was not declared. Should it be static?
auxio_32.c:108:13: warning: symbol 'auxio_power_probe' was not declared. Should it be static?
Add proper decalarations for the above.
The leaves one sparse warning:
auxio_32.c:130:33: warning: cast removes address space of expression
This is here:
auxio_power_register = (unsigned char *) of_ioremap()
This is __iomem that is removed from return value of of_ioremap()
The pointer is later used without any helpers in process_32.c:
*auxio_power_register |= AUXIO_POWER_OFF;
It would be simple to introduce a few sbus() helpers.
But as I was not sure this was correct the warning are left as-is.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
leon_pci_grpci2.c:218:1: warning: symbol 'grpci2_dev_lock' was not declared. Should it be static?
leon_pci_grpci2.c:219:20: warning: symbol 'grpci2priv' was not declared. Should it be static?
leon_pci_grpci2.c:221:5: warning: symbol 'grpci2_map_irq' was not declared. Should it be static?
leon_pci_grpci2.c:564:6: warning: symbol 'grpci2_hw_init' was not declared. Should it be
static?
+ a lot of these:
leon_pci_grpci2.c:252:9: warning: incorrect type in argument 1 (different address spaces)
Declare the symbols static as they are only used in this file.
Added missing __iomem annotations.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
leon_pci_grpci1.c:104:5: warning: symbol 'grpci1_map_irq' was not declared. Should it be static?
leon_pci_grpci1.c:420:6: warning: symbol 'grpci1_hw_init' was not declared. Should it be static?
+ a lot of these:
leon_pci_grpci1.c:693:18: warning: incorrect type in argument 1 (different address spaces)
Added missing static to definitions.
Added __iomem annotations
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
tadpole.c:21:6: warning: symbol 'cpu_pwr_save' was not declared. Should it be static?
tadpole.c:101:13: warning: symbol 'clock_stop_probe' was not declared. Should it be static?
This actually revealed that cpu_pwr_save is only assigned.
It was left static with a TODO comment for now - this should be cleaned up later.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warning:
devices.c:114:13: warning: symbol 'device_scan' was not declared. Should it be static?
Add prototype to asm/setup.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following sparc32 warning:
cpu.c:430:29: warning: symbol 'cpuinfo_op' was not declared. Should it be static?
Fix following sparc64 warnings:
cpu.c:364:14: warning: symbol 'dcache_parity_tl1_occurred' was not declared. Should it be static?
cpu.c:365:14: warning: symbol 'icache_parity_tl1_occurred' was not declared. Should it be static?
Rearrange asm/cpu.h to share more stuff between sparc32 and sparc64.
Added missing include to cpu.c of kernel.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
windows.c:16:6: warning: symbol 'flush_user_windows' was not declared. Should it be static?
windows.c:109:6: warning: symbol 'try_to_clear_window_buffer' was not declared. Should it be static?
Add missing include of cacheflush.h + add declaration of try_to_clear_window_buffer in kernel.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
setup_32.c:106:15: warning: symbol 'cmdline_memory_size' was not declared. Should it be static?
setup_32.c:270:16: warning: symbol 'fake_swapper_regs' was not declared. Should it be static?
setup_32.c:368:55: warning: Using plain integer as NULL pointer
Add missing declaration of cmdline_memory_size and remove the local one in init_32.c
fake_swapper_regs was only used locally - so defined static.
When replacing 0 with NULL also add a few spaces around operators
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
ioport.c:189:38: warning: Using plain integer as NULL pointer
ioport.c:78:25: warning: symbol 'sparc_iomap' was not declared. Should it be static?
ioport.c:403:20: warning: symbol 'sbus_dma_ops' was not declared. Should it be static?
ioport.c:684:39: warning: Using plain integer as NULL pointer
Add one missing prototype, and use NULL.
sbus_dma_ops declared static.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
signal_32.c:62:17: warning: symbol 'do_sigreturn' was not declared. Should it be static?
signal_32.c:126:17: warning: symbol 'do_rt_sigreturn' was not declared. Should it be static?
signal_32.c:344:39: warning: incorrect type in initializer (different address spaces)
signal_32.c:344:39: expected struct __siginfo_fpu_t [usertype] *fp
signal_32.c:344:39: got void [noderef] <asn:1>*[assigned] tail
signal_32.c:346:45: warning: incorrect type in argument 2 (different address spaces)
signal_32.c:346:45: expected struct __siginfo_fpu_t [noderef] [usertype] <asn:1>*fpu
signal_32.c:346:45: got struct __siginfo_fpu_t [usertype] *fp
signal_32.c:352:41: warning: incorrect type in initializer (different address spaces)
signal_32.c:352:41: expected struct __siginfo_rwin_t [usertype] *rwp
signal_32.c:352:41: got void [noderef] <asn:1>*[assigned] tail
signal_32.c:354:48: warning: incorrect type in argument 2 (different address spaces)
signal_32.c:354:48: expected struct __siginfo_rwin_t [noderef] [usertype] <asn:1>*rwin
signal_32.c:354:48: got struct __siginfo_rwin_t [usertype] *rwp
signal_32.c:509:6: warning: symbol 'do_notify_resume' was not declared. Should it be static?
signal_32.c:520:16: warning: symbol 'do_sys_sigstack' was not declared. Should it be static?
Add missing prototypes and annotate two variables with __user.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
process_32.c:67:6: warning: symbol 'arch_cpu_idle' was not declared. Should it be static?
process_32.c:257:16: warning: symbol 'sparc_do_fork' was not declared. Should it be static?
process_32.c:411:5: warning: symbol 'dump_fpu' was not declared. Should it be static?
Add missing includes and add one missing prototype.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
irq_32.c:239:5: warning: symbol 'sparc_floppy_request_irq' was not declared. Should it be static?
irq_32.c:294:24: warning: symbol 'fdc_status' was not declared. Should it be static?
irq_32.c:297:6: warning: symbol 'pdma_vaddr' was not declared. Should it be static?
irq_32.c:300:15: warning: symbol 'pdma_size' was not declared. Should it be static?
irq_32.c:303:14: warning: symbol 'doing_pdma' was not declared. Should it be static?
irq_32.c:306:6: warning: symbol 'pdma_base' was not declared. Should it be static?
irq_32.c:309:15: warning: symbol 'pdma_areasize' was not declared. Should it be static?
irq_32.c:317:6: warning: symbol 'sparc_floppy_irq' was not declared. Should it be static?
The floppy parts were all added to iasm/setup.h - no other header files looked obvious.
floppy_32.h was not an option as this file can only be included once from the
floppy driver.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
sun4d_irq.c:146:6: warning: symbol 'sun4d_handler_irq' was not declared. Should it be static?
sun4d_irq.c:239:17: warning: symbol 'sun4d_irq' was not declared. Should it be static?
sun4d_irq.c:288:14: warning: symbol '_sun4d_build_device_irq' was not declared. Should it be static?
sun4d_irq.c:323:14: warning: symbol 'sun4d_build_device_irq' was not declared. Should it be static?
sun4d_irq.c:386:14: warning: symbol 'sun4d_build_timer_irq' was not declared. Should it be static?
sun4d_irq.c:482:13: warning: symbol 'sun4d_init_sbi_irq' was not declared. Should it be static?
Apply static when applicable, otherwise add prototype
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
sun4m_irq.c:308:6: warning: symbol 'sun4m_nmi' was not declared. Should it be static?
sun4m_irq.c:396:28: warning: incorrect type in assignment (different address spaces)
sun4m_irq.c:396:28: expected unsigned int volatile *extern [addressable] [toplevel] master_l10_counter
sun4d_irq.c:469:28: warning: incorrect type in assignment (different address spaces)
sun4d_irq.c:469:28: expected unsigned int volatile *extern [addressable] [toplevel] master_l10_counter
master_l10_counter is a pointer to __iomem - add annotations.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warning:
traps_32.c:47:6: error: symbol 'die_if_kernel' redeclared with different type - different modifiers
Add __noreturn to both definition and declaration
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
srmmu.c:870:13: warning: symbol 'srmmu_paging_init' was not declared. Should it be static?
iommu.c:430:13: warning: symbol 'ld_mmu_iommu' was not declared. Should it be static?
leon_mm.c:21:5: warning: symbol 'srmmu_swprobe_trace' was not declared. Should it be static?
Add proper prototypes or define static to fix them.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warnings:
srmmu.c:78:5: warning: symbol 'flush_page_for_dma_global' was not declared. Should it be static?
srmmu.c:85:5: warning: symbol 'viking_mxcc_present' was not declared. Should it be static?
srmmu.c:103:6: warning: symbol 'srmmu_nocache_bitmap' was not declared. Should it be static?
srmmu.c:176:24: warning: Using plain integer as NULL pointer
srmmu.c:731:46: warning: Using plain integer as NULL pointer
srmmu.c:731:46: warning: Using plain integer as NULL pointer
srmmu.c:731:46: warning: Using plain integer as NULL pointer
srmmu.c:870:13: warning: symbol 'srmmu_paging_init' was not declared. Should it be static?
Add proper prototypes in mm_32.h and drop local prototype in init_32.c
Replace 0 with NULL
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warning:
init_32.c:112:22: warning: symbol 'bootmem_init' was not declared. Should it be static?
Fix by adding a proper prototype in pgtable_32.h and drop
the local prototype in srmmu.c
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix following warning:
fault_32.c:38:24: error: symbol 'unhandled_fault' redeclared with different type - different modifiers
When this warning was fixed several new warnings popped up - fix them too.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
