- 18 Sep, 2014 38 commits
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Theodore Ts'o authored
commit 86f0afd4 upstream. If there is a failure while allocating the preallocation structure, a number of blocks can end up getting marked in the in-memory buddy bitmap, and then not getting released. This can result in the following corruption getting reported by the kernel: EXT4-fs error (device sda3): ext4_mb_generate_buddy:758: group 1126, 12793 clusters in bitmap, 12729 in gd In that case, we need to release the blocks using mb_free_blocks(). Tested: fs smoke test; also demonstrated that with injected errors, the file system is no longer getting corrupted Google-Bug-Id: 16657874 Signed-off-by:
"Theodore Ts'o" <tytso@mit.edu> Signed-off-by:
Kamal Mostafa <kamal@canonical.com>
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NeilBrown authored
commit 2446dba0 upstream. Currently we don't abort recovery on a write error if the write error to the recovering device was triggerd by normal IO (as opposed to recovery IO). This means that for one bitmap region, the recovery might write to the recovering device for a few sectors, then not bother for subsequent sectors (as it never writes to failed devices). In this case the bitmap bit will be cleared, but it really shouldn't. The result is that if the recovering device fails and is then re-added (after fixing whatever hardware problem triggerred the failure), the second recovery won't redo the region it was in the middle of, so some of the device will not be recovered properly. If we abort the recovery, the region being processes will be cancelled (bit not cleared) and the whole region will be retried. As the bug can result in data corruption the patch is suitable for -stable. For kernels prior to 3.11 there is a conflict in raid10.c which will require care. Original-from: jiao hui <jiaohui@bwstor.com.cn> Reported-and-tested-by:
jiao hui <jiaohui@bwstor.com.cn> Signed-off-by:
NeilBrown <neilb@suse.de> Signed-off-by:
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Alex Smith authored
commit c23b3d1a upstream. Commit 6a9c001b ("MIPS: Switch ELF core dumper to use regsets.") switched the core dumper to use regsets, however the GP regset code simply makes a direct copy of the kernel's pt_regs, which does not match the original core dump register layout as defined in asm/reg.h. Furthermore, the definition of pt_regs can vary with certain Kconfig variables, therefore the GP regset can never be relied upon to return registers in the same layout. Therefore, this patch changes the GP regset to match the original core dump layout. The layout differs for 32- and 64-bit processes, so separate implementations of the get/set functions are added for the 32- and 64-bit regsets. Signed-off-by:
Alex Smith <alex@alex-smith.me.uk> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7452/Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Alex Smith authored
commit bcec7c8d upstream. Get rid of the WANT_COMPAT_REG_H test and instead define both the 32- and 64-bit register offset definitions at the same time with MIPS{32,64}_ prefixes, then define the existing EF_* names to the correct definitions for the kernel's bitness. This patch is a prerequisite of the following bug fix patch. Signed-off-by:
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Alex Smith authored
commit 65768a1a upstream. task_user_regset_view() should test for TIF_32BIT_REGS in the flags of the specified task, not of the current task. Signed-off-by:
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Huacai Chen authored
commit 2e5767a2 upstream. In do_ade(), is_fpu_owner() isn't preempt-safe. For example, when an unaligned ldc1 is executed, do_cpu() is called and then FPU will be enabled (and TIF_USEDFPU will be set for the current process). Then, do_ade() is called because the access is unaligned. If the current process is preempted at this time, TIF_USEDFPU will be cleard. So when the process is scheduled again, BUG_ON(!is_fpu_owner()) is triggered. This small program can trigger this BUG in a preemptible kernel: int main (int argc, char *argv[]) { double u64[2]; while (1) { asm volatile ( ".set push \n\t" ".set noreorder \n\t" "ldc1 $f3, 4(%0) \n\t" ".set pop \n\t" ::"r"(u64): ); } return 0; } V2: Remove the BUG_ON() unconditionally due to Paul's suggestion. Signed-off-by:
Huacai Chen <chenhc@lemote.com> Signed-off-by:
Jie Chen <chenj@lemote.com> Signed-off-by:
Rui Wang <wangr@lemote.com> Cc: John Crispin <john@phrozen.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Signed-off-by:
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Paolo Bonzini authored
commit 0f6c0a74 upstream. Currently, the EOI exit bitmap (used for APICv) does not include interrupts that are masked. However, this can cause a bug that manifests as an interrupt storm inside the guest. Alex Williamson reported the bug and is the one who really debugged this; I only wrote the patch. :) The scenario involves a multi-function PCI device with OHCI and EHCI USB functions and an audio function, all assigned to the guest, where both USB functions use legacy INTx interrupts. As soon as the guest boots, interrupts for these devices turn into an interrupt storm in the guest; the host does not see the interrupt storm. Basically the EOI path does not work, and the guest continues to see the interrupt over and over, even after it attempts to mask it at the APIC. The bug is only visible with older kernels (RHEL6.5, based on 2.6.32 with not many changes in the area of APIC/IOAPIC handling). Alex then tried forcing bit 59 (corresponding to the USB functions' IRQ) on in the eoi_exit_bitmap and TMR, and things then work. What happens is that VFIO asserts IRQ11, then KVM recomputes the EOI exit bitmap. It does not have set bit 59 because the RTE was masked, so the IOAPIC never sees the EOI and the interrupt continues to fire in the guest. My guess was that the guest is masking the interrupt in the redirection table in the interrupt routine, i.e. while the interrupt is set in a LAPIC's ISR, The simplest fix is to ignore the masking state, we would rather have an unnecessary exit rather than a missed IRQ ACK and anyway IOAPIC interrupts are not as performance-sensitive as for example MSIs. Alex tested this patch and it fixed his bug. [Thanks to Alex for his precise description of the problem and initial debugging effort. A lot of the text above is based on emails exchanged with him.] Reported-by:
Alex Williamson <alex.williamson@redhat.com> Tested-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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Paul Burton authored
commit b1442d39 upstream. If one or more matching FCSR cause & enable bits are set in saved thread context then when that context is restored the kernel will take an FP exception. This is of course undesirable and considered an oops, leading to the kernel writing a backtrace to the console and potentially rebooting depending upon the configuration. Thus the kernel avoids this situation by clearing the cause bits of the FCSR register when handling FP exceptions and after emulating FP instructions. However the kernel does not prevent userland from setting arbitrary FCSR cause & enable bits via ptrace, using either the PTRACE_POKEUSR or PTRACE_SETFPREGS requests. This means userland can trivially cause the kernel to oops on any system with an FPU. Prevent this from happening by clearing the cause bits when writing to the saved FCSR context via ptrace. This problem appears to exist at least back to the beginning of the git era in the PTRACE_POKEUSR case. Signed-off-by:
Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Paul Burton <paul.burton@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/7438/Signed-off-by:
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Huacai Chen authored
commit 8393c524 upstream. In commit 2c8c53e2 (MIPS: Optimize TLB handlers for Octeon CPUs) build_r4000_tlb_refill_handler() is modified. But it doesn't compatible with the original code in HUGETLB case. Because there is a copy & paste error and one line of code is missing. It is very easy to produce a bug with LTP's hugemmap05 test. Signed-off-by:
Binbin Zhou <zhoubb@lemote.com> Cc: John Crispin <john@phrozen.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/7496/Signed-off-by:
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Hui Wang authored
commit 7440850c upstream. ON the machine, two pin complex (0xb and 0xe) are both routed to the same external right-side mic jack, this makes the jack can't work. To fix this problem, set the 0xe to "not connected". BugLink: https://bugs.launchpad.net/bugs/1350148Tested-by:
Franz Hsieh <franz.hsieh@canonical.com> Signed-off-by:
Hui Wang <hui.wang@canonical.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Axel Lin authored
commit 56de1377 upstream. Current code uses channel as array index, so the valid channel value is 0 .. ADS1015_CHANNELS - 1. Signed-off-by:
Axel Lin <axel.lin@ingics.com> Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Janusz Dziemidowicz authored
commit 0213436a upstream. Some devices don't like REPORT SUPPORTED OPERATION CODES and will simply timeout causing sd_mod init to take a very very long time. Introduce BLIST_NO_RSOC scsi scan flag, that stops RSOC from being issued. Add it to Promise Vtrak E610f entry in scsi scan blacklist. Fixes bug #79901 reported at https://bugzilla.kernel.org/show_bug.cgi?id=79901 Fixes: 98dcc294 ("SCSI: sd: Update WRITE SAME heuristics") Signed-off-by:
Janusz Dziemidowicz <rraptorr@nails.eu.org> Reviewed-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Jarkko Sakkinen authored
commit 3e14d83e upstream. Regression in 41ab999c. Call to tpm_chip_put is missing. This will cause TPM device driver not to unload if tmp_get_random() is called. Signed-off-by:
Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by:
Peter Huewe <peterhuewe@gmx.de> Signed-off-by:
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Jason Gunthorpe authored
commit f07a5e9a upstream. Most device drivers do call 'tpm_do_selftest' which executes a TPM_ContinueSelfTest. tpm_i2c_stm_st33 is just pointlessly different, I think it is bug. These days we have the general assumption that the TPM is usable by the kernel immediately after the driver is finished, so we can no longer defer the mandatory self test to userspace. Reported-by:
Richard Marciel <rmaciel@linux.vnet.ibm.com> Signed-off-by:
Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by:
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Michael Welling authored
commit 46de8ff8 upstream. single-ulpi-bypass is a flag used for older OMAP3 silicon. The flag when set, can excite code that improperly uses the OMAP_UHH_HOSTCONFIG_UPLI_BYPASS define to clear the corresponding bit. Instead it clears all of the other bits disabling all of the ports in the process. Signed-off-by:
Michael Welling <mwelling@emacinc.com> Signed-off-by:
Lee Jones <lee.jones@linaro.org> Signed-off-by:
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Thomas Petazzoni authored
commit e06871cd upstream. In commit f814f9ac ("spi/orion: add device tree binding"), Device Tree support was added to the spi-orion driver. However, this commit reads the "cell-index" property, without taking into account the fact that DT properties are big-endian encoded. Since most of the platforms using spi-orion with DT have apparently not used anything but cell-index = <0>, the problem was not visible. But as soon as one starts using cell-index = <1>, the problem becomes clearly visible, as the master->bus_num gets a wrong value (actually it gets the value 0, which conflicts with the first bus that has cell-index = <0>). This commit fixes that by using of_property_read_u32() to read the property value, which does the appropriate endianness conversion when needed. Fixes: f814f9ac ("spi/orion: add device tree binding") Signed-off-by:
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by:
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by:
Mark Brown <broonie@linaro.org> Signed-off-by:
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Paul Mackerras authored
commit ef1af2e2 upstream. This does for PR KVM what c9438092 ("KVM: PPC: Book3S HV: Take SRCU read lock around kvm_read_guest() call") did for HV KVM, that is, eliminate a "suspicious rcu_dereference_check() usage!" warning by taking the SRCU lock around the call to kvmppc_rtas_hcall(). It also fixes a return of RESUME_HOST to return EMULATE_FAIL instead, since kvmppc_h_pr() is supposed to return EMULATE_* values. Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
Alexander Graf <agraf@suse.de> Signed-off-by:
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Andy Lutomirski authored
commit 53b884ac upstream. This commit in Linux 3.6: commit c767a54b Author: Joe Perches <joe@perches.com> Date: Mon May 21 19:50:07 2012 -0700 x86/debug: Add KERN_<LEVEL> to bare printks, convert printks to pr_<level> caused warn_bad_vsyscall to output garbage in the middle of the line. Revert the bad part of it. The printk in question isn't actually bare; the level is "%s". The bug this fixes is purely cosmetic; backports are optional. Signed-off-by:
Andy Lutomirski <luto@amacapital.net> Link: http://lkml.kernel.org/r/03eac1f24110bbe496ecc12a4df467e0d88466d4.1406330947.git.luto@amacapital.netSigned-off-by:
H. Peter Anvin <hpa@linux.intel.com> Signed-off-by:
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K. Y. Srinivasan authored
commit 3533f860 upstream. On some Windows hosts on FC SANs, TEST_UNIT_READY can return SRB_STATUS_ERROR. Correctly handle this. Note that there is sufficient sense information to support scsi error handling even in this case. Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Reviewed-by:
Hannes Reinecke <hare@suse.de> Signed-off-by:
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K. Y. Srinivasan authored
commit f885fb73 upstream. Correctly set SRB flags for all valid I/O directions. Some IHV drivers on the Windows host require this. The host validates the command and SRB flags prior to passing the command down to native driver stack. Signed-off-by:
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K. Y. Srinivasan authored
commit 56b26e69 upstream. On Azure, we have seen instances of unbounded I/O latencies. To deal with this issue, implement handler that can reset the timeout. Note that the host gaurantees that it will respond to each command that has been issued. Signed-off-by:
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K. Y. Srinivasan authored
commit adb6f9e1 upstream. Based on the negotiated VMBUS protocol version, we adjust the size of the storage protocol messages. The two sizes we currently handle are pre-win8 and post-win8. In WS2012 R2, we are negotiating higher VMBUS protocol version than the win8 version. Make adjustments to correctly handle this. Signed-off-by:
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K. Y. Srinivasan authored
commit 8caf92d8 upstream. Going forward it is possible that some of the commands that are not currently implemented will be implemented on future Windows hosts. Even if they are not implemented, we are told the host will corrrectly handle unsupported commands (by returning appropriate return code and sense information). Make command filtering depend on the host version. Signed-off-by:
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K. Y. Srinivasan authored
commit 52f9614d upstream. Set cmd_per_lun to reflect value supported by the Host. Signed-off-by:
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K. Y. Srinivasan authored
commit 4cd83ecd upstream. Hyper-V hosts can support multiple targets and multiple channels and larger number of LUNs per target. Update the code to reflect this. With this patch we can correctly enumerate all the paths in a multi-path storage environment. Signed-off-by:
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Stephen M. Cameron authored
commit 0758f4f7 upstream. When copy_from_user fails, return -EFAULT, not -ENOMEM Signed-off-by:
Stephen M. Cameron <scameron@beardog.cce.hp.com> Reported-by:
Robert Elliott <elliott@hp.com> Reviewed-by:
Joe Handzik <joseph.t.handzik@hp.com> Reviewed-by:
Scott Teel <scott.teel@hp.com> Reviewed by: Mike MIller <michael.miller@canonical.com> Signed-off-by:
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Ben Hutchings authored
commit 03a6c3ff upstream. bfa_swap_words() shifts its argument (assumed to be 64-bit) by 32 bits each way. In two places the argument type is dma_addr_t, which may be 32-bit, in which case the effect of the bit shift is undefined: drivers/scsi/bfa/bfa_fcpim.c: In function 'bfa_ioim_send_ioreq': drivers/scsi/bfa/bfa_fcpim.c:2497:4: warning: left shift count >= width of type [enabled by default] addr = bfa_sgaddr_le(sg_dma_address(sg)); ^ drivers/scsi/bfa/bfa_fcpim.c:2497:4: warning: right shift count >= width of type [enabled by default] drivers/scsi/bfa/bfa_fcpim.c:2509:4: warning: left shift count >= width of type [enabled by default] addr = bfa_sgaddr_le(sg_dma_address(sg)); ^ drivers/scsi/bfa/bfa_fcpim.c:2509:4: warning: right shift count >= width of type [enabled by default] Avoid this by adding casts to u64 in bfa_swap_words(). Compile-tested only. Signed-off-by:
Ben Hutchings <ben@decadent.org.uk> Reviewed-by:
Anil Gurumurthy <anil.gurumurthy@qlogic.com> Fixes: f16a1750 ('[SCSI] bfa: remove all OS wrappers') Signed-off-by:
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Martin K. Petersen authored
commit c1d40a52 upstream. Despite supporting modern SCSI features some storage devices continue to claim conformance to an older version of the SPC spec. This is done for compatibility with legacy operating systems. Linux by default will not attempt to read VPD pages on devices that claim SPC-2 or older. Introduce a blacklist flag that can be used to trigger VPD page inquiries on devices that are known to support them. Reported-by:
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Eric Paris authored
commit 7d8b6c63 upstream. This is effectively a revert of 7b9a7ec5 plus fixing it a different way... We found, when trying to run an application from an application which had dropped privs that the kernel does security checks on undefined capability bits. This was ESPECIALLY difficult to debug as those undefined bits are hidden from /proc/$PID/status. Consider a root application which drops all capabilities from ALL 4 capability sets. We assume, since the application is going to set eff/perm/inh from an array that it will clear not only the defined caps less than CAP_LAST_CAP, but also the higher 28ish bits which are undefined future capabilities. The BSET gets cleared differently. Instead it is cleared one bit at a time. The problem here is that in security/commoncap.c::cap_task_prctl() we actually check the validity of a capability being read. So any task which attempts to 'read all things set in bset' followed by 'unset all things set in bset' will not even attempt to unset the undefined bits higher than CAP_LAST_CAP. So the 'parent' will look something like: CapInh: 0000000000000000 CapPrm: 0000000000000000 CapEff: 0000000000000000 CapBnd: ffffffc000000000 All of this 'should' be fine. Given that these are undefined bits that aren't supposed to have anything to do with permissions. But they do... So lets now consider a task which cleared the eff/perm/inh completely and cleared all of the valid caps in the bset (but not the invalid caps it couldn't read out of the kernel). We know that this is exactly what the libcap-ng library does and what the go capabilities library does. They both leave you in that above situation if you try to clear all of you capapabilities from all 4 sets. If that root task calls execve() the child task will pick up all caps not blocked by the bset. The bset however does not block bits higher than CAP_LAST_CAP. So now the child task has bits in eff which are not in the parent. These are 'meaningless' undefined bits, but still bits which the parent doesn't have. The problem is now in cred_cap_issubset() (or any operation which does a subset test) as the child, while a subset for valid cap bits, is not a subset for invalid cap bits! So now we set durring commit creds that the child is not dumpable. Given it is 'more priv' than its parent. It also means the parent cannot ptrace the child and other stupidity. The solution here: 1) stop hiding capability bits in status This makes debugging easier! 2) stop giving any task undefined capability bits. it's simple, it you don't put those invalid bits in CAP_FULL_SET you won't get them in init and you won't get them in any other task either. This fixes the cap_issubset() tests and resulting fallout (which made the init task in a docker container untraceable among other things) 3) mask out undefined bits when sys_capset() is called as it might use ~0, ~0 to denote 'all capabilities' for backward/forward compatibility. This lets 'capsh --caps="all=eip" -- -c /bin/bash' run. 4) mask out undefined bit when we read a file capability off of disk as again likely all bits are set in the xattr for forward/backward compatibility. This lets 'setcap all+pe /bin/bash; /bin/bash' run Signed-off-by:
Eric Paris <eparis@redhat.com> Reviewed-by:
Kees Cook <keescook@chromium.org> Cc: Andrew Vagin <avagin@openvz.org> Cc: Andrew G. Morgan <morgan@kernel.org> Cc: Serge E. Hallyn <serge.hallyn@canonical.com> Cc: Kees Cook <keescook@chromium.org> Cc: Steve Grubb <sgrubb@redhat.com> Cc: Dan Walsh <dwalsh@redhat.com> Signed-off-by:
James Morris <james.l.morris@oracle.com> Signed-off-by:
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Mauro Carvalho Chehab authored
commit 4c07e328 upstream. The programmed frequency on xc4000 is not the middle frequency, but the initial frequency on the bandwidth range. However, the DVB API works with the middle frequency. This works fine on set_frontend, as the device calculates the needed offset. However, at get_frequency(), the returned value is the initial frequency. That's generally not a big problem on most drivers, however, starting with changeset 6fe1099c, the frequency drift is taken into account at dib7000p driver. This broke support for PCTV 340e, with uses dib7000p demod and xc4000 tuner. Signed-off-by:
Mauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by:
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Mauro Carvalho Chehab authored
commit a3eec916 upstream. The programmed frequency on xc5000 is not the middle frequency, but the initial frequency on the bandwidth range. However, the DVB API works with the middle frequency. Signed-off-by:
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Vignesh Raman authored
commit 32333edb upstream. The commits 08c30aca "Bluetooth: Remove RFCOMM session refcnt" and 8ff52f7d "Bluetooth: Return RFCOMM session ptrs to avoid freed session" allow rfcomm_recv_ua and rfcomm_session_close to delete the session (and free the corresponding socket) and propagate NULL session pointer to the upper callers. Additional fix is required to terminate the loop in rfcomm_process_rx function to avoid use of freed 'sk' memory. The issue is only reproducible with kernel option CONFIG_PAGE_POISONING enabled making freed memory being changed and filled up with fixed char value used to unmask use-after-free issues. Signed-off-by:
Vignesh Raman <Vignesh_Raman@mentor.com> Signed-off-by:
Vitaly Kuzmichev <Vitaly_Kuzmichev@mentor.com> Acked-by:
Dean Jenkins <Dean_Jenkins@mentor.com> Signed-off-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
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Salva Peiró authored
commit f8ca6ac0 upstream. After the zeroing the whole struct struct media_entity_desc u_ent, it is no longer necessary to memset(0) its u_ent.name field. Signed-off-by:
Salva Peiró <speiro@ai2.upv.es> Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Pratyush Anand authored
commit a40178b2 upstream. Problem Summary: Problem has been observed generally with PM states where VBUS goes off during suspend. There are some SS USB devices which take longer time for link training compared to many others. Such devices fail to reconnect with same old address which was associated with it before suspend. When system resumes, at some point of time (dpm_run_callback-> usb_dev_resume->usb_resume->usb_resume_both->usb_resume_device-> usb_port_resume) SW reads hub status. If device is present, then it finishes port resume and re-enumerates device with same address. If device is not present then, SW thinks that device was removed during suspend and therefore does logical disconnection and removes all the resource allocated for this device. Now, if I put sufficient delay just before root hub status read in usb_resume_device then, SW sees always that device is present. In normal course(without any delay) SW sees that no device is present and then SW removes all resource associated with the device at this port. In the latter case, after sometime, device says that hey I am here, now host enumerates it, but with new address. Problem had been reproduced when I connect verbatim USB3.0 hard disc with my STiH407 XHCI host running with 3.10 kernel. I see that similar problem has been reported here. https://bugzilla.kernel.org/show_bug.cgi?id=53211 Reading above it seems that bug was not in 3.6.6 and was present in 3.8 and again it was not present for some in 3.12.6, while it was present for few others. I tested with 3.13-FC19 running at i686 desktop, problem was still there. However, I was failed to reproduce it with 3.16-RC4 running at same i686 machine. I would say it is just a random observation. Problem for few devices is always there, as I am unable to find a proper fix for the issue. So, now question is what should be the amount of delay so that host is always able to recognize suspended device after resume. XHCI specs 4.19.4 says that when Link training is successful, port sets CSC bit to 1. So if SW reads port status before successful link training, then it will not find device to be present. USB Analyzer log with such buggy devices show that in some cases device switch on the RX termination after long delay of host enabling the VBUS. In few other cases it has been seen that device fails to negotiate link training in first attempt. It has been reported till now that few devices take as long as 2000 ms to train the link after host enabling its VBUS and RX termination. This patch implements a 2000 ms timeout for CSC bit to set ie for link training. If in a case link trains before timeout, loop will exit earlier. This patch implements above delay, but only for SS device and when persist is enabled. So, for the good device overhead is almost none. While for the bad devices penalty could be the time which it take for link training. But, If a device was connected before suspend, and was removed while system was asleep, then the penalty would be the timeout ie 2000 ms. Results: Verbatim USB SS hard disk connected with STiH407 USB host running 3.10 Kernel resumes in 461 msecs without this patch, but hard disk is assigned a new device address. Same system resumes in 790 msecs with this patch, but with old device address. Signed-off-by:
Pratyush Anand <pratyush.anand@st.com> Acked-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Alexander Usyskin authored
commit fe2f17eb upstream. wait_event_timeout can return 0 or the remaining jiffies so return -ETIME if disconnected state not reached. Signed-off-by:
Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by:
Tomas Winkler <tomas.winkler@intel.com> Signed-off-by:
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Alexander Usyskin authored
commit 22b987a3 upstream. Link must be reset in case the fw doesn't respond to client disconnect request. We did charge the timer only in irq path from mei_cl_irq_close and not in mei_cl_disconnect Signed-off-by:
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Alan Stern authored
commit 977dcfdc upstream. This patch fixes a bug in ohci-hcd. When an URB is unlinked, the corresponding Endpoint Descriptor is added to the ed_rm_list and taken off the hardware schedule. Once the ED is no longer visible to the hardware, finish_unlinks() handles the URBs that were unlinked or have completed. If any URBs remain attached to the ED, the ED is added back to the hardware schedule -- but only if the controller is running. This fails when a controller dies. A non-empty ED does not get added back to the hardware schedule and does not remain on the ed_rm_list; ohci-hcd loses track of it. The remaining URBs cannot be unlinked, which causes the USB stack to hang. The patch changes finish_unlinks() so that non-empty EDs remain on the ed_rm_list if the controller isn't running. This requires moving some of the existing code around, to avoid modifying the ED's hardware fields more than once. Signed-off-by:
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Alan Stern authored
commit 256dbcd8 upstream. The debug routine fill_async_buffer() in ohci-hcd is buggy: It never produces any output because it forgets to initialize the output buffer size. Also, the debug routine ohci_dump() has an unused argument. This patch adds the correct initialization and removes the unused argument. Signed-off-by:
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- 17 Sep, 2014 2 commits
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Scott Jiang authored
commit 30443408 upstream. The third parameter for snd_pcm_format_set_silence needs the number of samples instead of sample bytes. Signed-off-by:
Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by:
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Vladimir Davydov authored
commit 093facf3 upstream. If the current process is exiting, lingering on socket close will make it unkillable, so we should avoid it. Reproducer: #include <sys/types.h> #include <sys/socket.h> #define BTPROTO_L2CAP 0 #define BTPROTO_SCO 2 #define BTPROTO_RFCOMM 3 int main() { int fd; struct linger ling; fd = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM); //or: fd = socket(PF_BLUETOOTH, SOCK_DGRAM, BTPROTO_L2CAP); //or: fd = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_SCO); ling.l_onoff = 1; ling.l_linger = 1000000000; setsockopt(fd, SOL_SOCKET, SO_LINGER, &ling, sizeof(ling)); return 0; } Signed-off-by:
Vladimir Davydov <vdavydov@parallels.com> Signed-off-by:
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