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2008-07-01powerpc: Update for VSX core file and ptraceMichael Neuling
This correctly hooks the VSX dump into Roland McGrath core file infrastructure. It adds the VSX dump information as an additional elf note in the core file (after talking more to the tool chain/gdb guys). This also ensures the formats are consistent between signals, ptrace and core files. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Fix compile error for CONFIG_VSXMichael Neuling
Fix compile error when CONFIG_VSX is enabled. arch/powerpc/kernel/signal_64.c: In function 'restore_sigcontext': arch/powerpc/kernel/signal_64.c:241: error: 'i' undeclared (first use in this function) Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Explicitly copy elements of pt_regsStephen Rothwell
Gcc 4.3 produced this warning: arch/powerpc/kernel/signal_64.c: In function 'restore_sigcontext': arch/powerpc/kernel/signal_64.c:161: warning: array subscript is above array bounds This is caused by us copying to aliases of elements of the pt_regs structure. Make those explicit. This adds one extra __get_user and unrolls a loop. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Add VSX context save/restore, ptrace and signal supportMichael Neuling
This patch extends the floating point save and restore code to use the VSX load/stores when VSX is available. This will make FP context save/restore marginally slower on FP only code, when VSX is available, as it has to load/store 128bits rather than just 64bits. Mixing FP, VMX and VSX code will get constant architected state. The signals interface is extended to enable access to VSR 0-31 doubleword 1 after discussions with tool chain maintainers. Backward compatibility is maintained. The ptrace interface is also extended to allow access to VSR 0-31 full registers. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Add VSX assembler code macrosMichael Neuling
This adds the macros for the VSX load/store instruction as most binutils are not going to support this for a while. Also add VSX register save/restore macros and vsr[0-63] register definitions. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Add VSX CPU featureMichael Neuling
Add a VSX CPU feature. Also add code to detect if VSX is available from the device tree. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Joel Schopp <jschopp@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Introduce VSX thread_struct and CONFIG_VSXMichael Neuling
The layout of the new VSR registers and how they overlap on top of the legacy FPR and VR registers is: VSR doubleword 0 VSR doubleword 1 ---------------------------------------------------------------- VSR[0] | FPR[0] | | ---------------------------------------------------------------- VSR[1] | FPR[1] | | ---------------------------------------------------------------- | ... | | | ... | | ---------------------------------------------------------------- VSR[30] | FPR[30] | | ---------------------------------------------------------------- VSR[31] | FPR[31] | | ---------------------------------------------------------------- VSR[32] | VR[0] | ---------------------------------------------------------------- VSR[33] | VR[1] | ---------------------------------------------------------------- | ... | | ... | ---------------------------------------------------------------- VSR[62] | VR[30] | ---------------------------------------------------------------- VSR[63] | VR[31] | ---------------------------------------------------------------- VSX has 64 128bit registers. The first 32 regs overlap with the FP registers and hence extend them with and additional 64 bits. The second 32 regs overlap with the VMX registers. This commit introduces the thread_struct changes required to reflect this register layout. Ptrace and signals code is updated so that the floating point registers are correctly accessed from the thread_struct when CONFIG_VSX is enabled. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Make load_up_fpu and load_up_altivec callableMichael Neuling
Make load_up_fpu and load_up_altivec callable so they can be reused by the VSX code. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Move altivec_unavailableMichael Neuling
Move the altivec_unavailable code, to make room at 0xf40 where the vsx_unavailable exception will be. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Add macros to access floating point registers in thread_struct.Michael Neuling
We are going to change where the floating point registers are stored in the thread_struct, so in preparation add some macros to access the floating point registers. Update all code to use these new macros. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Fix MSR setting in 32 bit signal codeMichael Neuling
If we set the SPE MSR bit in save_user_regs we can blow away the VEC bit. This doesn't matter in reality as they are in fact the same bit but looks bad. Also, when we add VSX in a later patch, we need to be able to set two separate MSR bits here. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Use an alternative feature section in entry_64.SMichael Ellerman
Use an alternative feature section in _switch. There are three cases handled here, either we don't have an SLB, in which case we jump over the entire code section, or if we do we either do or don't have 1TB segments. Boot tested on Power3, Power5 and Power5+. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Introduce infrastructure for feature sections with alternativesMichael Ellerman
The current feature section logic only supports nop'ing out code, this means if you want to choose at runtime between instruction sequences, one or both cases will have to execute the nop'ed out contents of the other section, eg: BEGIN_FTR_SECTION or 1,1,1 END_FTR_SECTION_IFSET(FOO) BEGIN_FTR_SECTION or 2,2,2 END_FTR_SECTION_IFCLR(FOO) and the resulting code will be either, or 1,1,1 nop or, nop or 2,2,2 For small code segments this is fine, but for larger code blocks and in performance criticial code segments, it would be nice to avoid the nops. This commit starts to implement logic to allow the following: BEGIN_FTR_SECTION or 1,1,1 FTR_SECTION_ELSE or 2,2,2 ALT_FTR_SECTION_END_IFSET(FOO) and the resulting code will be: or 1,1,1 or, or 2,2,2 We achieve this by extending the existing FTR macros. The current feature section semantic just becomes a special case, ie. if the else case is empty we nop out the default case. The key limitation is that the size of the else case must be less than or equal to the size of the default case. If the else case is smaller the remainder of the section is nop'ed. We let the linker put the else case code in with the rest of the text, so that relative branches from the else case are more likley to link, this has the disadvantage that we can't free the unused else cases. This commit introduces the required macro and linker script changes, but does not enable the patching of the alternative sections. We also need to update two hand-made section entries in reg.h and timex.h Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Split out do_feature_fixups() from cputable.cMichael Ellerman
The logic to patch CPU feature sections lives in cputable.c, but these days it's used for CPU features as well as firmware features. Move it into it's own file for neatness and as preparation for some additions. While we're moving the code, we pull the loop body logic into a separate routine, and remove a comment which doesn't apply anymore. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Add PPC_NOP_INSTR, a hash define for the preferred nop instructionMichael Ellerman
A bunch of code has hard-coded the value for a "nop" instruction, it would be nice to have a #define for it. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Allow create_branch() to return errorsMichael Ellerman
Currently create_branch() creates a branch instruction for you, and patches it into the call site. In some circumstances it would be nice to be able to create the instruction and patch it later, and also some code might want to check for errors in the branch creation before doing the patching. A future commit will change create_branch() to check for errors. For callers that don't care, replace create_branch() with patch_branch(), which just creates the branch and patches it directly. While we're touching all the callers, change to using unsigned int *, as this seems to match usage better. That allows (and requires) us to remove the volatile in the definition of vector in powermac/smp.c and mpc86xx_smp.c, that's correct because now that we're passing vector as an unsigned int * the compiler knows that it's value might change across the patch_branch() call. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Jon Loeliger <jdl@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Move code patching code into arch/powerpc/lib/code-patching.cMichael Ellerman
We currently have a few routines for patching code in asm/system.h, because they didn't fit anywhere else. I'd like to clean them up a little and add some more, so first move them into a dedicated C file - they don't need to be inlined. While we're moving the code, drop create_function_call(), it's intended caller never got merged and will be replaced in future with something different. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Move common module code into its own fileKumar Gala
Refactor common code between ppc32 and ppc64 module handling into a shared filed. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Tell firmware we support architecture V2.06Joel Schopp
Add the bits to the architecture-vec so that ibm,client-architecture lets the firmware know we support the 2.06 architecture. Signed-off-by: Joel Schopp <jschopp@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01powerpc: Add cputable entry for Power7 architected modeJoel Schopp
Add an entry for Power7 architected mode and add "(raw)" to Power7 raw mode to distinguish it more clearly. Signed-off-by: Joel Schopp <jschopp@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30powerpc: Add cputable entry for POWER7Michael Neuling
Add a cputable entry for the POWER7 processor. Also tell firmware that we know about POWER7. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Joel Schopp <jschopp@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30powerpc: Increase CRASH_HANDLER_MAXArnd Bergmann
There are now two potential callers of machine_crash_shutdown, so increase the limit accordingly. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30Merge branch 'linux-2.6'Paul Mackerras
2008-06-30Merge branch 'next' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx
2008-06-26powerpc/booke: Add kprobes support for booke style processorsKumar Gala
This patch is based on work done by Madhvesh. R. Sulibhavi back in March 2007. We refactor some of the single step handling since it differs between "classic" and "booke" powerpc cores. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-06-26powerpc/kprobes: Some minor fixesKumar Gala
* Mark __flush_icache_range as a function that can't be probed since its used by the kprobe code. * Fix an issue with single stepping and async exceptions. We need to ensure that we dont get an async exception (external, decrementer, etc) while we are attempting to single step the probe point. Added a check to ensure we only handle a single step if its really intended for the instruction in question. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-06-26powerpc/e500mc: flush L2 on NAP for e500mcKumar Gala
If we have an L2CSR register (e500mc) we need to flush the L2 before going to nap. We use the HW flush mechanism provided in that register. The code reuses the CPU_FTR_604_PERF_MON bit as it is no longer used by any code in the kernel. Additionally we didn't reuse the exist L2CR feature bit as this is intended for the 7xxx L2CR register and L2CSR is part of the new Freescale "Book-E" registers. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-06-26powerpc/85xx: add DOZE/NAP support for e500 coreKumar Gala
The e500 core enter DOZE/NAP power-saving modes when the core go to cpu_idle routine. The power management default running mode is DOZE, If the user echo 1 > /proc/sys/kernel/powersave-nap the system will change to NAP running mode. Signed-off-by: Dave Liu <daveliu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-06-20Reinstate ZERO_PAGE optimization in 'get_user_pages()' and fix XIPLinus Torvalds
KAMEZAWA Hiroyuki and Oleg Nesterov point out that since the commit 557ed1fa2620dc119adb86b34c614e152a629a80 ("remove ZERO_PAGE") removed the ZERO_PAGE from the VM mappings, any users of get_user_pages() will generally now populate the VM with real empty pages needlessly. We used to get the ZERO_PAGE when we did the "handle_mm_fault()", but since fault handling no longer uses ZERO_PAGE for new anonymous pages, we now need to handle that special case in follow_page() instead. In particular, the removal of ZERO_PAGE effectively removed the core file writing optimization where we would skip writing pages that had not been populated at all, and increased memory pressure a lot by allocating all those useless newly zeroed pages. This reinstates the optimization by making the unmapped PTE case the same as for a non-existent page table, which already did this correctly. While at it, this also fixes the XIP case for follow_page(), where the caller could not differentiate between the case of a page that simply could not be used (because it had no "struct page" associated with it) and a page that just wasn't mapped. We do that by simply returning an error pointer for pages that could not be turned into a "struct page *". The error is arbitrarily picked to be EFAULT, since that was what get_user_pages() already used for the equivalent IO-mapped page case. [ Also removed an impossible test for pte_offset_map_lock() failing: that's not how that function works ] Acked-by: Oleg Nesterov <oleg@tv-sign.ru> Acked-by: Nick Piggin <npiggin@suse.de> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-18powerpc/booke: Add support for new e500mc coreKumar Gala
The new e500mc core from Freescale is based on the e500v2 but with the following changes: * Supports only the Enhanced Debug Architecture (DSRR0/1, etc) * Floating Point * No SPE * Supports lwsync * Doorbell Exceptions * Hypervisor * Cache line size is now 64-bytes (e500v1/v2 have a 32-byte cache line) Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-06-18[POWERPC] 4xx: Clear new TLB cache attribute bits in Data Storage vectorJosh Boyer
A recent commit added support for the new 440x6 and 464 cores that have the added WL1, IL1I, IL1D, IL2I, and ILD2 bits for the caching attributes in the TLBs. The new bits were cleared in the finish_tlb_load function, however a similar bit of code was missed in the DataStorage interrupt vector. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-16[POWERPC] Remove ppc32's export of console_driversStephen Rothwell
There are no in-tree uses of the export any more and in linux-next there is a change that exports it globally which causes warnings: WARNING: vmlinux: 'console_drivers' exported twice. Previous export was in vmlinux and in one case (mpc85xx_defconfig) a build error: kernel/built-in.o: In function `__crc_console_drivers': (*ABS*+0x1eb0e6f5): multiple definition of `__crc_console_drivers' So remove the export now. Also, there is no longer any need to include linux/console.h. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-16[POWERPC] Fix -Os kernel builds with newer gcc versionsKumar Gala
GCC 4.4.x looks to be adding support for generating out-of-line register saves/restores based on: http://gcc.gnu.org/ml/gcc-patches/2008-04/msg01678.html This breaks the kernel if we enable CONFIG_CC_OPTIMIZE_FOR_SIZE. To fix this we add the use the save/restore code from gcc and simplified it down for our needs (integer only). Additionally, we have to link this code into each module. The other solution was to add EXPORT_SYMBOL() which meant going through the trampoline which seemed nonsensical for these out-of-line routines. Finally, we add some checks to prom_init_check.sh to ignore the out-of-line save/restore functions. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-16[POWERPC] Fix return value check logic in debugfs virq_mapping setupEmil Medve
debugfs_create_file() returns a non-NULL (non-zero) value in case of success, not a NULL value. This fixes this non-critical boot-time debugging error message: [ 1.316386] calling irq_debugfs_init+0x0/0x50 [ 1.316399] initcall irq_debugfs_init+0x0/0x50 returned -12 after 0 msecs [ 1.316411] initcall irq_debugfs_init+0x0/0x50 returned with error code -12 Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Acked-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-11powerpc/booke: Fix some comments related to debug level exceptionsKumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-06-11Revert "[POWERPC] 4xx: Fix 460GT support to not enable FPU"Josh Boyer
This reverts commit acb0142bf01c0ebe18f09e37814451ee6a873e27. AMCC has indicated that the PPC 460GT does have FPU support. This revert enables the FPU for those chips again. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-06-09powerpc: Fix irq_alloc_host() reference counting and callersMichael Ellerman
When I changed irq_alloc_host() to take an of_node (52964f87c64e6c6ea671b5bf3030fb1494090a48: "Add an optional device_node pointer to the irq_host"), I botched the reference counting semantics. Stephen pointed out that it's irq_alloc_host()'s business if it needs to take an additional reference to the device_node, the caller shouldn't need to care. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-09powerpc: Add the PC speaker only when requestedEmil Medve
This eliminates this minor boot-time debugging error message: [ 1.316451] calling add_pcspkr+0x0/0x84 [ 1.316478] initcall add_pcspkr+0x0/0x84 returned -19 after 0 msecs Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-09Merge branch 'merge'Paul Mackerras
Conflicts: arch/powerpc/sysdev/fsl_soc.c
2008-06-09[POWERPC] Use dev_set_name in pci_64.cStephen Rothwell
During the next merge window, pci_name()'s return value will become const, so use the new dev_set_name() instead to avoid the warning (from linux-next): arch/powerpc/kernel/pci_64.c: In function 'of_create_pci_dev': arch/powerpc/kernel/pci_64.c:193: warning: passing argument 1 of 'sprintf' discards qualifiers from pointer target type Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-09[POWERPC] Fix incorrect enabling of VMX when building signal or user contextBenjamin Herrenschmidt
When building a signal or a ucontext, we can incorrectly set the MSR_VEC bit of the kernel pt_regs->msr before returning to userspace if the task -ever- used VMX. This can lead to funny result if that stack used it in the past, then "lost" it (ie. it wasn't enabled after a context switch for example) and then called get_context. It can end up with VMX enabled and the registers containing values from some other task. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-02[POWERPC] 40x/Book-E: Save/restore volatile exception registersKumar Gala
On machines with more than one exception level any system register that might be modified by the "normal" exception level needs to be saved and restored on taking a higher level exception. We already are saving and restoring ESR and DEAR. For critical level add SRR0/1. For debug level add CSRR0/1 and SRR0/1. For machine check level add DSRR0/1, CSRR0/1, and SRR0/1. On FSL Book-E parts we always save/restore the MAS registers for critical, debug, and machine check level exceptions. On 44x we always save/restore the MMUCR. Additionally, we save and restore the ksp_limit since we have to adjust it for each exception level. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Paul Mackerras <paulus@samba.org>
2008-06-02[POWERPC] Rework EXC_LEVEL_EXCEPTION_PROLOG codeKumar Gala
* Cleanup the code a bit my allocating an INT_FRAME on our exception stack there by make references go from GPR11-INT_FRAME_SIZE(r8) to just GPR11(r8) * simplify {lvl}_transfer_to_handler code by moving the copying of the temp registers we use if we come from user space into the PROLOG * If the exception came from kernel mode copy thread_info flags, preempt, and task pointer from the process thread_info. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Paul Mackerras <paulus@samba.org>
2008-06-02[POWERPC] Move to runtime allocated exception stacksKumar Gala
For the additonal exception levels (critical, debug, machine check) on 40x/book-e we were using "static" allocations of the stack in the associated head.S. Move to a runtime allocation to make the code a bit easier to read as we mimic how we handle IRQ stacks. Its also a bit easier to setup the stack with a "dummy" thread_info in C code. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Paul Mackerras <paulus@samba.org>
2008-05-23Merge branch 'merge' into powerpc-nextPaul Mackerras
2008-05-23[POWERPC] Add kernstart_addr to list of allowed symbols in prom_initMichael Ellerman
Since commit "85xx: Add support for relocatable kernel (and booting at non-zero)" (37dd2badcfcec35f5e21a0926968d77a404f03c3), PHYSICAL_START is #defined as kernstart_addr if RELOCATABLE and FLATMEM is enabled. PHYSICAL_START is used in prom_init.c and so kernstart_addr needs to be added to the list of allowed symbols that prom_init.c can access. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-23[POWERPC] Remove unnecessary cast in arch_deref_entry_point()Michael Ellerman
func_descr_t->entry is already an unsigned long. Mea culpa. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-23[POWERPC] Tweak VDSO linker script to avoid upsetting old binutilsRoland McGrath
This works around bugs in older binutils' objcopy. The placement of these sections does not really matter, but it confused the buggy old BFD libraries. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-16[PATCH] take init_files to fs/file.cAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-05-16[POWERPC] Move of_device_get_modalias to drivers/ofStephen Rothwell
Commit 140b932f8cb6cced10b96860651a198b1b89cbb9 ("Create modalias file in sysfs for of_platform bus") needs this to avoid breaking the sparc builds. Just move the code and add whitespace around some binary operators. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
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