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path: root/drivers/ssb/pci.c
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2019-09-13ssb: make array pwr_info_offset static const, makes object smallerColin Ian King
Don't populate the array pwr_info_offset on the stack but instead make it static const. Makes the object code smaller by 207 bytes. Before: text data bss dec hex filename 26066 3000 64 29130 71ca drivers/ssb/pci.o After: text data bss dec hex filename 25763 3096 64 28923 70fb drivers/ssb/pci.o (gcc version 9.2.1, amd64) Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Michael Büsch <m@bues.ch> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-04-08drivers: Remove explicit invocations of mmiowb()Will Deacon
mmiowb() is now implied by spin_unlock() on architectures that require it, so there is no reason to call it from driver code. This patch was generated using coccinelle: @mmiowb@ @@ - mmiowb(); and invoked as: $ for d in drivers include/linux/qed sound; do \ spatch --include-headers --sp-file mmiowb.cocci --dir $d --in-place; done NOTE: mmiowb() has only ever guaranteed ordering in conjunction with spin_unlock(). However, pairing each mmiowb() removal in this patch with the corresponding call to spin_unlock() is not at all trivial, so there is a small chance that this change may regress any drivers incorrectly relying on mmiowb() to order MMIO writes between CPUs using lock-free synchronisation. If you've ended up bisecting to this commit, you can reintroduce the mmiowb() calls using wmb() instead, which should restore the old behaviour on all architectures other than some esoteric ia64 systems. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2018-08-09ssb: Remove SSB_WARN_ON, SSB_BUG_ON and SSB_DEBUGMichael Büsch
Use the standard WARN_ON instead. If a small kernel is desired, WARN_ON can be disabled globally. Also remove SSB_DEBUG. Besides WARN_ON it only adds a tiny debug check. Include this check unconditionally. Signed-off-by: Michael Buesch <m@bues.ch> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-08-09ssb: Remove home-grown printk wrappersMichael Büsch
Replace the ssb printk wrappers by standard print helpers. Also remove SSB_SILENT. Nobody should use it anyway. Originally submitted by Joe Perches <joe@perches.com>. Modified to add dev_... based printks. Signed-off-by: Michael Buesch <m@bues.ch> Tested-by: Michael Buesch <m@bues.ch> Cc: Joe Perches <joe@perches.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-11-17ssb: Fix error routine when fallback SPROM failsLarry Finger
When there is a CRC error in the SPROM read from the device, the code attempts to handle a fallback SPROM. When this also fails, the driver returns zero rather than an error code. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stable <stable@vger.kernel.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2014-07-18ssb: extract power info from SPROM revs 4 and 5Rafał Miłecki
This is needed to properly handle early 802.11n devices like BCM4321. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-07-15ssb: extract antenna gains from SPROMs revs 4+ properlyRafał Miłecki
They are encoded the same way as in older SPROMs. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-07-15ssb: make code for antenna gain extraction more genericRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-25ssb: read additional sprom v2 and v3 attributes.Hauke Mehrtens
These attributes should be in the sprom for rev 2 and 3, but they were not read out. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-25ssb: extract board_type from SPROMRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-13ssb: pci: Fix flipping of MAC addressLarry Finger
Since commit e565275 entitled "ssb: pci: Standardize a function to get mac address", the SPROM readout of the MAC has had the values flipped so that 00:11:22:33:44:55 became 11:00:33:22:55:44. The fix has been tested on both little- and big-endian architectures. Reported-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-06ssb: Convert ssb_printk to ssb_<level>Joe Perches
Use a more current logging style. Convert ssb_dbprint to ssb_dbg too. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-06ssb: pci: Standardize a function to get mac addressJoe Perches
Don't require alignment of mac addresses to u16. Signed-off-by: Joe Perches <joe@perches.com> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-16bcma/ssb: parse new attributes from spromHauke Mehrtens
These newly added attributes are used by brcmsmac. Now bcma should parse all attributes used by brcmsmac out of the sprom. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Tested-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-16ssb: fill board_rev attribute from spromHauke Mehrtens
This attribute is now used in b43 driver and should be filled for all sprom versions. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-16ssb/bcma: fill attribute alpha2 from spromHauke Mehrtens
The attribute country_code and alpha2 are two different attributes in the sprom. country_code contains some code in an 8 bit coding and alpha2 contains two chars with the country code. The attributes where read out wrongly in the past and country_code is only available on sprom version 1. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Tested-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-16ssb: remove rev from boardinfoHauke Mehrtens
Previously the rev contained the revision read from the pci config space and was used as board_rev in the wireless drivers. This is wrong the board_rev is only fetched from the sprom accordingly to the open source part of the Broadcom SDK and brcmsmac. This patch removes the rev from the boardinfo structure and uses the board_rev attribute from sprom instead. This attribute is filled by PCI, PCMCIA, SDIO and SoC code. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Tested-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-05ssb: remove 5GHz antenna gain from spromHauke Mehrtens
There is no 2.4 GHz or 5GHz antenna gain stored in sprom. The sprom just stores the gain values for antenna 1 and 2 or 1 to 4 for more recent sprom versions. On old devices antenna 2 was used for 5 GHz wifi. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-24ssb: SPROM: extract each core power infoRafał Miłecki
We already extract some basic info but it's incomplete, reads info about the first core only. Used data structure doesn't allow easy adding of more cores. This patch adds new struct and array for storing power info. The plan is to: switch all extractors (including the ones using NVRAM) to new struct, switch drivers, then deprecate and finally drop old SSB fields. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-13ssb: extract FEM info from SPROMRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-25Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits) fs: Merge split strings treewide: fix potentially dangerous trailing ';' in #defined values/expressions uwb: Fix misspelling of neighbourhood in comment net, netfilter: Remove redundant goto in ebt_ulog_packet trivial: don't touch files that are removed in the staging tree lib/vsprintf: replace link to Draft by final RFC number doc: Kconfig: `to be' -> `be' doc: Kconfig: Typo: square -> squared doc: Konfig: Documentation/power/{pm => apm-acpi}.txt drivers/net: static should be at beginning of declaration drivers/media: static should be at beginning of declaration drivers/i2c: static should be at beginning of declaration XTENSA: static should be at beginning of declaration SH: static should be at beginning of declaration MIPS: static should be at beginning of declaration ARM: static should be at beginning of declaration rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check Update my e-mail address PCIe ASPM: forcedly -> forcibly gma500: push through device driver tree ... Fix up trivial conflicts: - arch/arm/mach-ep93xx/dma-m2p.c (deleted) - drivers/gpio/gpio-ep93xx.c (renamed and context nearby) - drivers/net/r8169.c (just context changes)
2011-07-07Update my e-mail addressMichael Büsch
Signed-off-by: Michael Buesch <m@bues.ch> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-07-05ssb: use pci_dev->subsystem_{vendor,device}Sergei Shtylyov
The SSB code reads PCI subsystem IDs from the PCI configuration registers while they are already stored by the PCI subsystem in the 'subsystem_{vendor|device}' fields of 'struct pci_dev'... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-05ssb: use pci_dev->revisionSergei Shtylyov
The SSB code reads PCI revision ID from the PCI configuration register while it's already stored by the PCI subsystem in the 'revision' field of 'struct pci_dev'... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-05ssb: PCI revision ID register is 8-bit wideSergei Shtylyov
The SSB code reads PCI revision ID register as 16-bit entity while the register is actually 8-bit only (the next 8 bits are the programming interface register). Fix the read and make the 'rev' field of 'struct ssb_boardinfo' 8-bit as well, to match the register size. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-19SSB: Change fallback sprom to callback mechanism.Hauke Mehrtens
Some embedded devices like the Netgear WNDR3300 have two SSB based cards without an own sprom on the pci bus. We have to provide two different fallback sproms for these and this was not possible with the old solution. In the bcm47xx architecture the sprom data is stored in the nvram in the main flash storage. The architecture code will be able to fill the sprom with the stored data based on the bus where the device was found. The bcm63xx code should do the same thing as before, just using the new API. Acked-by: Michael Buesch <mb@bu3sch.de> Cc: netdev@vger.kernel.org Cc: linux-wireless@vger.kernel.org Cc: Florian Fainelli <florian@openwrt.org> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2362/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-02-18ssb: trivial: fix SPROM extract warning formattingRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-09ssb: extract boardflags2 for SPROMs rev 4 and 5Rafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-12-02ssb: extract indexes for power tablesRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Acked-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-11-18ssb: drop BCM4328 hack for SPROM revisionRafał Miłecki
This hacks leads to incorrect SPROM parsing for me and reading for example MAC as: 00:00:00:54:00:00. Michael G. who introduced this confirmed it is not needed anymore. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Tested-by: Michael Gerdau <mgd@qata.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-11-16ssb: return -ENOMEM on alloc fail (instead of CRC check's result)Rafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-11-16ssb: workarounds: be verbose about hacking SPROM revision, don't duplicate codeRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-04ssb: Handle alternate SSPROM locationLarry Finger
In kernel Bugzilla #15825 (2 users), in a wireless mailing list thread (http://lists.infradead.org/pipermail/b43-dev/2010-May/000124.html), and on a netbook owned by John Linville (http://marc.info/?l=linux-wireless&m=127230751408818&w=4), there are reports of ssb failing to detect an SPROM at the normal location. After studying the MMIO trace dump for the Broadcom wl driver, it was determined that the affected boxes had a relocated SPROM. This patch fixes all systems that have reported this problem. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stable <stable@kernel.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-05-28ssb: fix NULL ptr deref when pcihost_wrapper is usedChristoph Fritz
Ethernet driver b44 does register ssb by it's pcihost_wrapper and doesn't set ssb_chipcommon. A check on this value introduced with commit d53cdbb94a52a920d5420ed64d986c3523a56743 and ea2db495f92ad2cf3301623e60cb95b4062bc484 triggers: BUG: unable to handle kernel NULL pointer dereference at 00000010 IP: [<c1266c36>] ssb_is_sprom_available+0x16/0x30 Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-05-05Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem Conflicts: drivers/net/wireless/libertas_tf/cmd.c drivers/net/wireless/libertas_tf/main.c
2010-04-26ssb: Use relative offsets for SPROMRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-26ssb: Look for SPROM at different offset on higher rev CCRafał Miłecki
Our offset handling becomes even a little more hackish now. For some reason I do not understand all offsets as inrelative. It assumes base offset is 0x1000 but it will work for now as we make offsets relative anyway by removing base 0x1000. Should be cleaner however. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-26ssb: do not read SPROM if it does not existJohn W. Linville
Attempting to read registers that don't exist on the SSB bus can cause hangs on some boxes. At least some b43 devices are 'in the wild' that don't have SPROMs at all. When the SSB bus support loads, it attempts to read these (non-existant) SPROMs and causes hard hangs on the box -- no console output, etc. This patch adds some intelligence to determine whether or not the SPROM is present before attempting to read it. This avoids those hard hangs on those devices with no SPROM attached to their SSB bus. The SSB-attached devices (e.g. b43, et al.) won't work, but at least the box will survive to test further patches. :-) Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Cc: Larry Finger <Larry.Finger@lwfinger.net> Cc: Michael Buesch <mb@bu3sch.de>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2009-09-14ssb: Fix error when V1 SPROM extraction is forcedLarry Finger
When an SPROM revision is not recognized, the code falls back to a V1 SPROM; however, that revision is not forced in the appropriate structure. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-20ssb: Fix typo in the rev8 SPROM extraction routineGábor Stefanik
No comment. :-) Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-14ssb: Implement the remaining rev.8 SPROM vars needed for LP-PHYGábor Stefanik
Also add a "SPEX32" macro for extracting 32-bit SPROM variables. Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-03-05ssb: Add SPROM fallback supportMichael Buesch
This adds SSB functionality to register a fallback SPROM image from the architecture setup code. Weird architectures exist that have half-assed SSB devices without SPROM attached to their PCI busses. The architecture can register a fallback SPROM image that is used if no SPROM is found on the SSB device. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Florian Fainelli <florian@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29b43/ssb: Add SPROM8 extraction and LP-PHY detectionMichael Buesch
This adds detection code for the LP-PHY and SPROM extraction code for version 8, which is needed by the LP-PHY and newer N-PHY. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-08-29ssb: Clean up extraction of MAC addresses from SPROMLarry Finger
Only rev 1 and 2 ssb SPROMs have fields named et0mac and et1mac; however, all of the extraction routines extract pseudo data for these fields from regions that are all 1's resulting in a hardware address of FF:FF:FF:FF:FF:FF. This patch forces such a fill at the beginning of the data extraction process, and only does the formal extraction if the SPROM rev is 1 or 2. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-08-29ssb: Update for Rev. 5 SPROMLarry Finger
Although a revision 5 SPROM has not been seen in the wild, the open-source portion of the MIPS driver 4.150.10.5 describes its layout, which is mostly inherited from revision 4. This patch implements the differences. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Acked-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-07ssb: Allow reading of 440-byte SPROM that is not rev 4Larry.Finger@lwfinger.net
The current code checks for the special signature that signifies a revision 4 SPROM. Now that a rev. 8 SPROM with a 440-byte length has been found that may not have any special code, this check could be relaxed. With this patch, if the CRC is incorrect for a 256-byte SPROM, the code will immediately check for a 440-byte SPROM. If there is still a CRC error, the size is set to 440 bytes, which allows dumping of most of any 512-byte SPROM if one is encountered. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-04-23ssb: Fix all-ones boardflagsLarry Finger
In the SSB SPROM a field set to all ones means the value is not defined in the SPROM. In case of the boardflags, we need to set them to zero to avoid confusing drivers. Drivers will only check the flags by ANDing. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Gabor Stefanik <netrolller.3d@gmail.com> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-04-08ssb: Add support for block-I/OMichael Buesch
This adds support for block based I/O to SSB. This is needed in order to efficiently support PIO data transfers to the card. The block-I/O support is only compiled, if it's selected by the weird driver that needs it. So there's no overhead for sane devices. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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