- 04 Aug, 2009 1 commit
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David Woodhouse authored
Yet another reason why trusting this stuff to the BIOS was a bad idea. The HP DC7900 BIOS reports an iommu at an address which just returns all ones, when VT-d is disabled in the BIOS. Fix up the missing iounmap in the error paths while we're at it. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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- 03 Aug, 2009 1 commit
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Alex Williamson authored
This avoids a "Malformed early option 'iommu'" warning on boot when trying to use pass-through mode. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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- 20 Jul, 2009 1 commit
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Dan Carpenter authored
g_iommus is freed after we "goto error;". Found by smatch (http://repo.or.cz/w/smatch.git). Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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- 15 Jul, 2009 3 commits
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David Woodhouse authored
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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David Woodhouse authored
I see no reason why we did this _only_ in intel_unmap_page(). Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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David Woodhouse authored
We only ever obtain this lock immediately before the iova_rbtree_lock, and release it immediately after the iova_rbtree_lock. So ditch it and just use iova_rbtree_lock. [v2: Remove the lockdep bits this time too] Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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- 07 Jul, 2009 1 commit
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David Woodhouse authored
We did before, in the end -- but it was at the bottom of a long stack of functions. Add an inline wrapper get_valid_domain_for_dev() which will use the cached one _first_ and only make the out-of-line call if it's not already set. This takes the average time taken for a 1-page intel_map_sg() from 5961 cycles to 4812 cycles on my Lenovo x200s test box -- a modest 20%. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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- 06 Jul, 2009 15 commits
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git://git.infradead.org/iommu-2.6Linus Torvalds authored
* git://git.infradead.org/iommu-2.6: intel-iommu: Don't use identity mapping for PCI devices behind bridges intel-iommu: Use iommu_should_identity_map() at startup time too. intel-iommu: No mapping for non-PCI devices intel-iommu: Restore DMAR_BROKEN_GFX_WA option for broken graphics drivers intel-iommu: Add iommu_should_identity_map() function intel-iommu: Fix reattaching of devices to identity mapping domain intel-iommu: Don't set identity mapping for bypassed graphics devices intel-iommu: Fix dma vs. mm page confusion with aligned_nrpages()
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: ieee1394: sbp2: add support for disks >2 TB (and 16 bytes long CDBs) firewire: sbp2: add support for disks >2 TB (and 16 bytes long CDBs) firewire: core: do not DMA-map stack addresses
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Paul Mundt authored
This way they'll be properly initialized early enough for users that may touch them before the framebuffer has been registered. Drivers that allocate their fb_info structure some other way (like matrocfb's broken static allocation) need to be fixed up appropriately. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Oleg Nesterov authored
do_execve() and ptrace_attach() return -EINTR if mutex_lock_interruptible(->cred_guard_mutex) fails. This is not right, change the code to return ERESTARTNOINTR. Perhaps we should also change proc_pid_attr_write(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: David Howells <dhowells@redhat.com> Acked-by: Roland McGrath <roland@redhat.com> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Tobias Doerffel authored
In include/linux/sysrq.h the constant EINVAL is being used but is undefined if include/linux/errno.h is not included before. Fix this by adding #include <linux/errno.h> at the beginning. Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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InKi Dae authored
Correct the CLKVAL_F field value of VIDEO MAIN CONTROLLER 0 REGITSTER. Frame Rate is 1 / [ { (VSPW+1) + (VBPD+1) + (LIINEVAL + 1) + (VFPD+1) } x {(HSPW+1) + (HBPD +1) + (HFPD+1) + (HOZVAL + 1) } x { ( CLKVAL+1 ) / ( Frequency of Clock source ) } ] and VCLK = Video Clock Source / (CLKVAL +1). therefore CLKVAL_F should be "CLKVAL_F = Frequency of Clock source / pixel clock * refresh". for this, I added refresh value in platform data like below. static struct s3c_fb_pd_win xxx_fb_win0 = { /* this is to ensure we use win0 */ .win_mode = { .refresh = 60, .pixclock = (66+4+2+480)*(15+5+3+800), .left_margin = 66, .right_margin = 2, .upper_margin = 15, .lower_margin = 3, .hsync_len = 4, .vsync_len = 5, .xres = 480, .yres = 800, }, .max_bpp = 32, .default_bpp = 24, }; static struct s3c_fb_platdata xxx_lcd_pdata __initdata = { .win[0] = &xxx_fb_win0, .vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB, .vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC | VIDCON1_INV_VCLK | VIDCON1_INV_VDEN, .setup_gpio = s5pc1xx_fb_gpio_setup_24bpp, }; xxx_machine_init() { . . . s3c_fb_set_platdata(&xxx_lcd_pdata); } platform data defined in machine code should be setting using s3c_fb_set_platdata(). Signed-off-by: InKi Dae <inki.dae@samsung.com> Cc: Kyungmin Park <kmpark@infradead.org> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Kevin Cernekee authored
These warnings were observed on MIPS32 using 2.6.31-rc1 and gcc-4.2.0: mm/page_alloc.c: In function 'alloc_pages_exact': mm/page_alloc.c:1986: warning: passing argument 1 of 'virt_to_phys' makes pointer from integer without a cast drivers/usb/mon/mon_bin.c: In function 'mon_alloc_buff': drivers/usb/mon/mon_bin.c:1264: warning: passing argument 1 of 'virt_to_phys' makes pointer from integer without a cast [akpm@linux-foundation.org: fix kernel/perf_counter.c too] Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Josef Bacik authored
In testing a backport of the write_begin/write_end AOPs, a 10% re-read regression was noticed when running iozone. This regression was introduced because the old AOPs would always do a mark_page_accessed(page) after the commit_write, but when the new AOPs where introduced, the only place this was kept was in pagecache_write_end(). This patch does the same thing in the generic case as what is done in pagecache_write_end(), which is just to mark the page accessed before we do write_end(). Signed-off-by: Josef Bacik <jbacik@redhat.com> Acked-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Hui Zhu authored
Fix the multithread program core thread message error. This issue affects arches with neither has CORE_DUMP_USE_REGSET nor ELF_CORE_COPY_TASK_REGS, ARM is one of them. The thread message of core file is generated in elf_dump_thread_status. The register values is set by elf_core_copy_task_regs in this function. If an arch doesn't define ELF_CORE_COPY_TASK_REGS, elf_core_copy_task_regs() will do nothing. Then the core file will not have the register message of thread. So add elf_core_copy_regs to set regiser values if ELF_CORE_COPY_TASK_REGS doesn't define. The following is how to reproduce this issue: cat 1.c #include <stdio.h> #include <pthread.h> #include <assert.h> void td1(void * i) { while (1) { printf ("1\n"); sleep (1); } return; } void td2(void * i) { while (1) { printf ("2\n"); sleep (1); } return; } int main(int argc,char *argv[],char *envp[]) { pthread_t t1,t2; pthread_create(&t1, NULL, (void*)td1, NULL); pthread_create(&t2, NULL, (void*)td2, NULL); sleep (10); assert(0); return (0); } arm-xxx-gcc -g -lpthread 1.c -o 1 copy 1.c and 1 to a arm board. Goto this board. ulimit -c 1800000 ./1 # ./1 1 2 1 ... ... 1 1: 1.c:37: main: Assertion `0' failed. Aborted (core dumped) Then you can get a core file. gdb 1 core.xxx Without the patch: (gdb) info threads 3 process 909 0x00000000 in ?? () 2 process 908 0x00000000 in ?? () * 1 process 907 0x4a6e2238 in raise () from /lib/libc.so.6 You can found that the pc of 909 and 908 is 0x00000000. With the patch: (gdb) info threads 3 process 885 0x4a749974 in nanosleep () from /lib/libc.so.6 2 process 884 0x4a749974 in nanosleep () from /lib/libc.so.6 * 1 process 883 0x4a6e2238 in raise () from /lib/libc.so.6 The pc of 885 and 884 is right. Signed-off-by: Hui Zhu <teawater@gmail.com> Cc: Amerigo Wang <xiyou.wangcong@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Zhang, Yanmin authored
I run many ffsb test cases on JBODs (typically 13/12 disks). Comparing with kernel 2.6.30, 2.6.31-rc1 has about 16% regression with ffsb_create_4k. The sub test case creates files continuously for 10 minitues and every file is 1MB. Bisect located below patch. 5cee5815 is first bad commit commit 5cee5815 Author: Jan Kara <jack@suse.cz> Date: Mon Apr 27 16:43:51 2009 +0200 vfs: Make sys_sync() use fsync_super() (version 4) It is unnecessarily fragile to have two places (fsync_super() and do_sync()) doing data integrity sync of the filesystem. Alter __fsync_super() to accommodate needs of both callers and use it. So after this patch __fsync_super() is the only place where we gather all the calls needed to properly send all data on a filesystem to disk. As a matter of fact, ffsb calls sys_sync in the end to make sure all data is flushed to disks and the flushing is counted into the result. vmstat shows ffsb is blocked when syncing for a long time. With 2.6.30, ffsb is blocked for a short time. I checked the patch and did experiments to recover the original methods. Eventually, the root cause is the patch deletes the calling to wakeup_pdflush when syncing, so only ffsb is blocked on disk I/O. wakeup_pdflush could ask pdflush to write back pages with ffsb at the same time. [akpm@linux-foundation.org: restore comment too] Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Cc: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Peter Oberparleiter authored
Fix for this issue on x86_64: rostedt@goodmis.org wrote: > On bootup of the latest kernel my init segfaults. Debugging it, > I found that vread_tsc (a vsyscall) increments some strange > kernel memory: > > 0000000000000000 <vread_tsc>: > 0: 55 push %rbp > 1: 48 ff 05 00 00 00 00 incq 0(%rip) > # 8 <vread_tsc+0x8> > 4: R_X86_64_PC32 .bss+0x3c > 8: 48 89 e5 mov %rsp,%rbp > b: 66 66 90 xchg %ax,%ax > e: 48 ff 05 00 00 00 00 incq 0(%rip) > # 15 <vread_tsc+0x15> > 11: R_X86_64_PC32 .bss+0x44 > 15: 66 66 90 xchg %ax,%ax > 18: 48 ff 05 00 00 00 00 incq 0(%rip) > # 1f <vread_tsc+0x1f> > 1b: R_X86_64_PC32 .bss+0x4c > 1f: 0f 31 rdtsc > > > Those "incq" is very bad to happen in vsyscall memory, since > userspace can not modify it. You need to make something prevent > profiling of vsyscall memory (like I do with ftrace). Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Reported-by: Steven Rostedt <rostedt@goodmis.org> Tested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Jiri Slaby authored
When i2c_smbus_read_byte_data fails in ds1374_work, we forgot to unlock the held lock. Fix that. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Scott Wood <scottwood@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Florian Fainelli authored
Fix a typo in the VLYNQ bus driver Kconfig which prevented to turn on VLYNQ bus debugging. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Robert P. J. Day authored
Fix a typo in the vlynq bus driver which was missing the CONFIG_ prefix to turn on debugging code. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Krzysztof Helt authored
Remove redundant call to the sisfb_get_fix() before sis frambuffer is registered. This fixes a problem with uninitialized the fb_info->mm_lock mutex introduced by the commit 537a1bf0 " fbdev: add mutex for fb_mmap locking" Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Tested-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 04 Jul, 2009 17 commits
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David Woodhouse authored
Our current strategy for pass-through mode is to put all devices into the 1:1 domain at startup (which is before we know what their dma_mask will be), and only _later_ take them out of that domain, if it turns out that they really can't address all of memory. However, when there are a bunch of PCI devices behind a bridge, they all end up with the same source-id on their DMA transactions, and hence in the same IOMMU domain. This means that we _can't_ easily move them from the 1:1 domain into their own domain at runtime, because there might be DMA in-flight from their siblings. So we have to adjust our pass-through strategy: For PCI devices not on the root bus, and for the bridges which will take responsibility for their transactions, we have to start up _out_ of the 1:1 domain, just in case. This fixes the BUG() we see when we have 32-bit-capable devices behind a PCI-PCI bridge, and use the software identity mapping. It does mean that we might end up using 'normal' mapping mode for some devices which could actually live with the faster 1:1 mapping -- but this is only for PCI devices behind bridges, which presumably aren't the devices for which people are most concerned about performance. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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David Woodhouse authored
At boot time, the dma_mask won't have been set on any devices, so we assume that all devices will be 64-bit capable (and thus get a 1:1 map). Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Linus Torvalds authored
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Paul Mundt authored
Commit 537a1bf0 (fbdev: add mutex for fb_mmap locking) introduces a ->mm_lock mutex for protecting smem assignments. Unfortunately in the case of sm501fb these happen quite early in the initialization code, well before the mutex_init() that takes place in register_framebuffer(), leading to: Badness at kernel/mutex.c:207 Pid : 1, Comm: swapper CPU : 0 Not tainted (2.6.31-rc1-00284-g529ba0d9-dirty #2273) PC is at __mutex_lock_slowpath+0x72/0x1bc PR is at __mutex_lock_slowpath+0x66/0x1bc ... matroxfb appears to have the same issue and has solved it with an early mutex_init(), so we do the same for sm501fb. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Cc: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6: (27 commits) parisc: use generic atomic64 on 32-bit parisc: superio: fix build breakage parisc: Fix PCI resource allocation on non-PAT SBA machines parisc: perf: wire up sys_perf_counter_open parisc: add task_pt_regs macro parisc: wire sys_perf_counter_open to sys_ni_syscall parisc: inventory.c, fix bloated stack frame parisc: processor.c, fix bloated stack frame parisc: fix compile warning in mm/init.c parisc: remove dead code from sys_parisc32.c parisc: wire up rt_tgsigqueueinfo parisc: ensure broadcast tlb purge runs single threaded parisc: fix "delay!" timer handling parisc: fix mismatched parenthesis in memcpy.c parisc: Fix gcc 4.4 warning in lba_pci.c parisc: add parameter to read_cr16() parisc: decode_exc.c should include kernel.h parisc: remove obsolete hw_interrupt_type parisc: fix irq compile bugs in arch/parisc/kernel/irq.c parisc: advertise PCI devs after "assign_resources" ... Manually fixed up trivial conflicts in tools/perf/perf.h due to addition of SH vs HPPA perf-counter support.
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git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: mfd: fix pcap adc locking mfd: sm501, fix lock imbalance
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git://linux-nfs.org/~bfields/linuxLinus Torvalds authored
* 'for-2.6.31' of git://linux-nfs.org/~bfields/linux: NFSD: Don't hold unrefcounted creds over call to nfsd_setuser()
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: MIPS: Fix CONFIG_FLATMEM version of pfn_valid() MIPS: Reorganize Cavium OCTEON PCI support. Update Yoichi Yuasa's e-mail address MIPS: Allow suspend and hibernation again on uniprocessor kernels. MIPS: 64-bit: Fix o32 core dump MIPS: BC47xx: Fix SSB irq setup MIPS: CMP: Update sync-r4k for current kernel MIPS: CMP: Move gcmp_probe to before the SMP ops MIPS: CMP: activate CMP support MIPS: CMP: Extend IPI handling to CPU number MIPS: CMP: Extend the GIC IPI interrupts beyond 32 MIPS: Define __arch_swab64 for all mips r2 cpus MIPS: Update VR41xx GPIO driver to use gpiolib MIPS: Hookup new syscalls sys_rt_tgsigqueueinfo and sys_perf_counter_open. MIPS: Malta: Remove unnecessary function prototypes MIPS: MT: Remove unnecessary semicolons MIPS: Add support for Texas Instruments AR7 System-on-a-Chip
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: sound: do not set DEVNAME for OSS devices ALSA: hda - Add sanity check in PCM open callback ALSA: hda - Call snd_pcm_lib_hw_rates() again after codec open callback ALSA: hda - Avoid invalid formats and rates with shared SPDIF ALSA: hda - Improve ASUS eeePC 1000 mixer ALSA: hda - Add GPIO1 control at muting with HP laptops ALSA: usx2y - reparent sound device ALSA: snd_usb_caiaq: reparent sound device sound: virtuoso: fix Xonar D1/DX silence after resume ASoC: Only disable pxa2xx-i2s clocks if we enabled them ALSA: hda - Add quirk for HP 6930p ALSA: hda - Add missing static to patch_ca0110() ASoC: OMAP: fix OMAP1510 broken PCM pointer callback ASoC: remove BROKEN from Efika and pcm030 fabric drivers ASoC: Fix typo in MPC5200 PSC AC97 driver Kconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kbuild: finally remove the obsolete variable $TOPDIR gitignore: ignore scripts/ihex2fw Kbuild: Disable the -Wformat-security gcc flag gitignore: ignore gcov output files kbuild: deb-pkg ship changelog Add new __init_task_data macro to be used in arch init_task.c files. asm-generic/vmlinux.lds.h: shuffle INIT_TASK* macro names in vmlinux.lds.h Add new macros for page-aligned data and bss sections. asm-generic/vmlinux.lds.h: Fix up RW_DATA_SECTION definition.
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git://git.kernel.dk/linux-2.6-blockLinus Torvalds authored
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: don't merge requests of different failfast settings cciss: Ignore stale commands after reboot
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David Woodhouse authored
This should fix kernel.org bug #11821, where the dcdbas driver makes up a platform device and then uses dma_alloc_coherent() on it, in an attempt to get memory < 4GiB. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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David Woodhouse authored
We need to give people a little more time to fix the broken drivers. Re-introduce this, but tied in properly with the 'iommu=pt' support this time. Change the config option name and make it default to 'no' too. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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David Woodhouse authored
We do this twice, and it's about to get more complicated. This makes the code slightly clearer about what it's doing, too. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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David Woodhouse authored
When we reattach a device to the si_domain (because it's been removed from a VM), we weren't calling domain_context_mapping() to actually tell the hardware about that. We should really put the call to domain_context_mapping() into domain_add_dev_info() -- we never call the latter without also doing the former, and we can keep the error paths simple that way. But that's a cleanup which can wait for 2.6.32 now. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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David Woodhouse authored
We should check iommu_dummy() _first_, because that means it's attached to an iommu that we've just disabled completely. At the moment, we might try to put the device into the identity mapping domain. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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David Woodhouse authored
The aligned_nrpages() function rounds up to the next VM page, but returns its result as a number of DMA pages. Purely theoretical except on IA64, which doesn't boot with VT-d right now anyway. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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- 03 Jul, 2009 1 commit
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Takashi Iwai authored
* fix/soundcore: sound: do not set DEVNAME for OSS devices
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