- 03 Dec, 2008 29 commits
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Martyn Welch authored
Adding use of newly added Epson RTX-8581 real-time clock driver to GE Fanuc SBC610's dts file and adding driver to default config. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Kumar Gala authored
arch/powerpc/platforms/85xx/mpc85xx_mds.c: In function 'board_fixups': arch/powerpc/platforms/85xx/mpc85xx_mds.c:244: warning: format '%x' expects type 'unsigned int', but argument 4 has type 'resource_size_t' arch/powerpc/platforms/85xx/mpc85xx_mds.c:250: warning: format '%x' expects type 'unsigned int', but argument 4 has type 'resource_size_t' Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Kumar Gala authored
Added 85xx specifc smp_ops structure. We use ePAPR style boot release and the MPIC for IPIs at this point. Additionally added routines for secondary cpu entry and initializtion. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Kumar Gala authored
Removed unused branch labels Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Trent Piepho authored
The initial TLB mapping for the kernel boot didn't set the memory coherent attribute, MAS2[M], in SMP mode. If this code supported booting a secondary processor, which it doesn't yet, but if it did, then when a secondary processor boots, it would probably signal the primary processor by setting a variable called something like __secondary_hold_acknowledge. However, due to the lack of the M bit, the primary processor would not snoop the transaction (even if a transaction were broadcast). If primary CPU's L1 D-cache had a copy, it would not be flushed and the CPU would never see the ack. Which would have resulted in the primary CPU spinning for a long time, perhaps a full second before it gives up, while it would have waited for the ack from the secondary CPU that it wouldn't have been able to see because of the stale cache. The value of MAS2 for the boot page TLB1 entry is a compile time constant, so there is no need to calculate it in powerpc assembly language. Also, from the MPC8572 manual section 6.12.5.3, "Bits that represent offsets within a page are ignored and should be cleared." Existing code didn't clear them, this code does. The same when the page of KERNELBASE is found; we don't need to use asm to mask the lower 12 bits off. In the code that computes the address to rfi from, don't hard code the offset to 24 bytes, but have the assembler figure that out for us. Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Liu Yu authored
This patch add the handlers of SPE/EFP exceptions. The code is used to emulate float point arithmetic, when MSR(SPE) is enabled and receive EFP data interrupt or EFP round interrupt. This patch has no conflict with or dependence on FP math-emu. The code has been tested by TestFloat. Now the code doesn't support SPE/EFP instructions emulation (it won't be called when receive program interrupt), but it could be easily added. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Liu Yu authored
FP_DECL_EX is already used, so ret is redundant. And FP_SET_EXCEPTION will add status into return value. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Liu Yu authored
Move to using the same macro definition for _FP_CHOOSENAN as s390, sh, sparc32/64. The original author didn't understand this and matched what sparc64 was doing and they have updated to this definition. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Liu Yu authored
PowerPC float point division emulation is derived from gcc. I reported this problem on gcc maillist and got this reply: http://gcc.gnu.org/ml/gcc/2008-03/msg00543.html Since UDIV_NEEDS_NORMALIZATION is not used by kernel, we should use _FP_DIV_MEAT_1_udiv_norm to make sure the single float point is normalized before udiv_qrnnd. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Kumar Gala authored
After testing of various compiler flag combinations by Nate Case it was determined that -mabi=no-spe has no impact on the compiler generating SPE instructions. Only -mno-spe and -mspe=no do. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Hendrik Brueckner authored
The test to check for a new winsize runs out-of-sync with the underlying tty. After a tty has been released and initialized again, the winsize might differ between the tty and the hp struct. The solution is to simply remove the check and always schedule the resize work. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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roel kluin authored
Otherwise the tests for count < 0 will never be true. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Nicolas Palix authored
of_node_put is needed before discarding a value received from of_find_node_by_name, e.g., in error handling code or when the device node is no longer used. The semantic match that catches the bug is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression struct device_node *n; position p1, p2; statement S1,S2; expression E,E1; expression *ptr != NULL; @@ ( if (!(n@p1 = of_find_node_by_name(...))) S1 | n@p1 = of_find_node_by_name(...) ) <... when != of_node_put(n) when != if (...) { <+... of_node_put(n) ...+> } when != true !n || ... when != n = E when != E = n if (!n || ...) S2 ...> ( return \(0\|<+...n...+>\|ptr\); | return@p2 ...; | n = E1 | E1 = n ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s of_find_node_by_name %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Nicolas Palix <npalix@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Anton Vorontsov authored
This adds a new function, of_get_gpio_flags, which is like of_get_gpio(), but accepts a new "flags" argument. This new function will be used by the drivers that need to retrieve additional GPIO information, such as active-low flag. Also, this changes the default ("simple") .xlate routine to warn about bogus (< 2) #gpio-cells usage: the second cell should always be present for GPIO flags. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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roel kluin authored
i2c_smbus_read_word_data() returns a s32, which may be negative but unsigned len cannot be negative. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Anton Vorontsov authored
For I2C devices we just setting the node pointer in the archdata. This is needed so that the I2C devices could find their OF tree nodes. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Anton Vorontsov authored
The name of the device_node field differ across the platforms, so we have to implement inlined accessors. This is needed to avoid ugly #ifdef in the generic code. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Sonny Rao authored
This adds support for multiple BSR nodes in the OF device tree. Previously, the BSR driver only supported a single OF node describing a BSR. Apparently when an LPAR is set to use "all system resources" the BSR appears as a single node, but when it is handed out in pieces, each 8 byte piece gets its own node. So, this keeps a list of BSR devices instead of the array and includes all nodes. Also, this makes the code be more inclusive of what BSR devices we accept by only checking compatibility and not the device name property (which might change in the future versions of BSR). Signed-off-by: Sonny Rao <sonnyrao@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Sebastien Dugue authored
ibmebus_free_irq() frees the IRQ but does not remove its mapping, which results in stale entries in the map. This fixes it by adding a call to irq_dispose_mapping() in ibmebus_free_irq(). Signed-off-by: Sebastien Dugue <sebastien.dugue@bull.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Julia Lawall authored
As noted by Akinobu Mita in commit b1fceac2 ("x86: remove unnecessary memset and NULL check after alloc_bootmem()"), alloc_bootmem and related functions never return NULL and always return a zeroed region of memory. Thus a NULL test or memset after calls to these functions is unnecessary. This was fixed using the following semantic patch. (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E; statement S; @@ E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\|alloc_bootmem_node\|alloc_bootmem_low_pages_node\|alloc_bootmem_pages_node\)(...) ... when != E ( - BUG_ON (E == NULL); | - if (E == NULL) S ) @@ expression E,E1; @@ E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\|alloc_bootmem_node\|alloc_bootmem_low_pages_node\|alloc_bootmem_pages_node\)(...) ... when != E - memset(E,0,E1); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Becky Bruce authored
We need to swap these out once we start using swiotlb, so add them to dma_ops. Create CONFIG_PPC_NEED_DMA_SYNC_OPS Kconfig option; this is currently enabled automatically if we're CONFIG_NOT_COHERENT_CACHE. In the future, this will also be enabled for builds that need swiotlb. If PPC_NEED_DMA_SYNC_OPS is not defined, the dma_sync_*_for_* ops compile to nothing. Otherwise, they access the dma_ops pointers for the sync ops. This patch also changes dma_sync_single_range_* to actually sync the range - previously it was using a generous dma_sync_single. dma_sync_single_* is now implemented as a dma_sync_single_range with an offset of 0. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Johannes Berg authored
On my screen, when something crashes, I only have space for maybe 16 functions of the stack trace before the information above it scrolls off the screen. It's easy to hack the kernel to print out only that much, but it's harder to remember to do it. This introduces a config option for it so that I can keep the setting in my config. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Kumar Gala authored
Refactor the RCU based pte free code that was used on ppc64 to be used on all powerpc. Additionally refactor pte_free() & pte_free_kernel() into common code between ppc32 & ppc64. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Kumar Gala authored
The tlb invalidates in kmap_atomic/kunmap_atomic can be called from IRQ context, however they are only local invalidates (on the processor that the kmap was called on). In the future we want to use IPIs to do tlb invalidates this causes issue since flush_tlb_page() is considered a broadcast invalidate. Add local_flush_tlb_page() as a non-broadcast invalidate and use it in kmap_atomic() since we don't have enough information in the flush_tlb_page() call to determine its local. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Kumar Gala authored
Clean up the ifdefs so we only use hash_page_sync if we have CONFIG_SMP && CONFIG_PPC_STD_MMU_32. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Benjamin Herrenschmidt authored
The 32-bit hash code didn't need it so far so we don't update mm->cpu_vm_mask on context switch. This however will break when we merge the RCU based page table freeing patch and other upcoming 32-bit embedded SMP work, so this adds the update. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Kumar Gala authored
Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Paul Mackerras authored
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Benjamin Herrenschmidt authored
On PowerPC 4xx or other non cache-coherent platforms, we lost the appropriate cache flushing in dma_map_sg() when merging the 32 and 64-bit DMA code (commit 4fc665b8, "powerpc: Merge 32 and 64-bit dma code"). This restores it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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- 02 Dec, 2008 11 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] hpwdt: Fix kdump when using hpwdt [WATCHDOG] hpwdt: set the mapped BIOS address space as executable [WATCHDOG] iTCO_wdt: add PCI ID's for ICH9 & ICH10 chipsets [WATCHDOG] iTCO_wdt : correct status clearing [WATCHDOG] iTCO_wdt : problem with rebooting on new ICH9 based motherboards [WATCHDOG] fix mtx1_wdt compilation failure
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git://git.infradead.org/ubifs-2.6Linus Torvalds authored
* 'linux-next' of git://git.infradead.org/ubifs-2.6: UBIFS: pre-allocate bulk-read buffer UBIFS: do not allocate too much UBIFS: do not print scary memory allocation warnings UBIFS: allow for gaps when dirtying the LPT UBIFS: fix compilation warnings MAINTAINERS: change UBI/UBIFS git tree URLs UBIFS: endian handling fixes and annotations UBIFS: remove printk
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git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvmLinus Torvalds authored
* 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: KVM: MMU: avoid creation of unreachable pages in the shadow KVM: ppc: stop leaking host memory on VM exit KVM: MMU: fix sync of ptes addressed at owner pagetable KVM: ia64: Fix: Use correct calling convention for PAL_VPS_RESUME_HANDLER KVM: ia64: Fix incorrect kbuild CFLAGS override KVM: VMX: Fix interrupt loss during race with NMI KVM: s390: Fix problem state handling in guest sigp handler
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Fix offset calculation in compute_size() rtc: rtc-starfire fixes
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (30 commits) MAINTAINERS: add netdev to ATM ATM: horizon, fix hrz_probe fail path pppol2tp: Add missing sock_put() in pppol2tp_release() net: Fix soft lockups/OOM issues w/ unix garbage collector macvlan: don't broadcast PAUSE frames to macvlan devices Phonet: fix oops in phonet_address_del() on non-Phonet device netfilter: ctnetlink: fix GFP_KERNEL allocation under spinlock sungem: Fix PCS_MIICTRL register write in gem_init_phy(). net: make skb_truesize_bug() call WARN() net: hp-plus uses eip_poll net/wireless/reg.c: fix bad WARN_ON in if statement ath5k: disable beacon filter when station is not associated ath5k: fix Security issue in DebugFS part of ath5k ath9k: correct expected max RX buffer size ath9k: Fix SW-IOMMU bounce buffer starvation mac80211 : Fix setting ad-hoc mode and non-ibss channel iwlagn: fix DMA sync phylib: Add Vitesse VSC8221 SGMII PHY rose: zero length frame filtering in af_rose.c bridge: netfilter: fix update_pmtu crash with GRE ...
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68kLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: Update defconfigs for 2.6.28-rc7 macfb: Do not overflow fb_fix_screeninfo.id
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git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: alim15x3: fix sparse warning ide: remove dead code from drive_is_ready() ide: fix build for DEBUG_PM ide: respect current DMA setting during resume ide: add SAMSUNG SP0822N with firmware WA100-10 to ivb_list[] amd74xx: workaround unreliable AltStatus register for nVidia controllers ide: fix the ide_release_lock imbalance
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] stex: switch to block timeout [SCSI] make scsi_eh_try_stu use block timeout [SCSI] megaraid_sas: switch to block timeout [SCSI] ibmvscsi: switch to block timeout [SCSI] aacraid: switch to block timeout [SCSI] zfcp: prevent double decrement on host_busy while being busy [SCSI] zfcp: fix deadlock between wq triggered port scan and ERP [SCSI] zfcp: eliminate race between validation and locking [SCSI] zfcp: verify for correct rport state before scanning for SCSI devs [SCSI] zfcp: returning an ERR_PTR where a NULL value is expected [SCSI] zfcp: Fix opening of wka ports [SCSI] zfcp: fix remote port status check [SCSI] fc_transport: fix old bug on bitflag definitions [SCSI] Fix hang in starved list processing
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Mark Salter authored
This fixes the MN10300 kernel module linking to match the toolchain. RELA relocs don't use the value at the location being relocated. This has been working because the tools always leave the value at the target location cleared. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Dean Nelson authored
If xpc.ko and gru.ko are both statically linked into the kernel, then xpc_init() can get called before gru_init() and make a call to one of the gru's exported functions before the gru has initialized itself. The end result is a NULL dereference. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Kumar Gala authored
In the CONFIG_SMP case the irq_choose_cpu() code was returning back a logical cpu id not the physical id. We were writing that directly into the HW register. We need to be calling get_hard_smp_processor_id() so irq_choose_cpu() always returns a physical cpu id. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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