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2011-11-16block: avoid unnecessary plug list flushShaohua Li1-7/+9
get_request_wait() could sleep and flush the plug list. If the list is already flushed, don't flush again. Signed-off-by: Shaohua Li <[email protected]> Reviewed-by: Namhyung Kim <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2011-11-16cciss: auto engage SCSI mid layer at driver load timeStephen M. Cameron3-8/+8
A long time ago, probably in 2002, one of the distros, or maybe more than one, loaded block drivers prior to loading the SCSI mid layer. This meant that the cciss driver, being a block driver, could not engage the SCSI mid layer at init time without panicking, and relied on being poked by a userland program after the system was up (and the SCSI mid layer was therefore present) to engage the SCSI mid layer. This is no longer the case, and cciss can safely rely on the SCSI mid layer being present at init time and engage the SCSI mid layer straight away. This means that users will see their tape drives and medium changers at driver load time without need for a script in /etc/rc.d that does this: for x in /proc/driver/cciss/cciss* do echo "engage scsi" > $x done However, if no tape drives or medium changers are detected, the SCSI mid layer will not be engaged. If a tape drive or medium change is later hot-added to the system it will then be necessary to use the above script or similar for the device(s) to be acceesible. Signed-off-by: Stephen M. Cameron <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2011-11-16loop: cleanup set_status interfaceDmitry Monakhov1-15/+29
1) Anyone who has read access to loopdev has permission to call set_status and may change important parameters such as lo_offset, lo_sizelimit and so on, which contradicts to read access pattern and definitely equals to write access pattern. 2) Add lo_offset over i_size check to prevent blkdev_size overflow. ##Testcase_bagin #dd if=/dev/zero of=./file bs=1k count=1 #losetup /dev/loop0 ./file /* userspace_application */ struct loop_info64 loinf; fd = open("/dev/loop0", O_RDONLY); ioctl(fd, LOOP_GET_STATUS64, &loinf); /* Set offset to any value which is bigger than i_size, and sizelimit * to nonzero value*/ loinf.lo_offset = 4096*1024; loinf.lo_sizelimit = 1024; ioctl(fd, LOOP_SET_STATUS64, &loinf); /* After this loop device will have size similar to 0x7fffffffffxxxx */ #blockdev --getsz /dev/loop0 ##OUTPUT: 36028797018955968 ##Testcase_end [[email protected]: coding-style fixes] Signed-off-by: Dmitry Monakhov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2011-11-16include/linux/bio.h: use a static inline function for bio_integrity_clone()Stephen Rothwell1-1/+5
When CONFIG_BLK_DEV_INTEGRITY is not set, we get these warnings: drivers/md/dm.c: In function 'split_bvec': drivers/md/dm.c:1061:3: warning: statement with no effect drivers/md/dm.c: In function 'clone_bio': drivers/md/dm.c:1088:3: warning: statement with no effect Signed-off-by: Stephen Rothwell <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2011-11-16loop: prevent information leak after failed readDmitry Monakhov1-1/+2
If read was not fully successful we have to fail whole bio to prevent information leak of old pages ##Testcase_begin dd if=/dev/zero of=./file bs=1M count=1 losetup /dev/loop0 ./file -o 4096 truncate -s 0 ./file # OOps loop offset is now beyond i_size, so read will silently fail. # So bio's pages would not be cleared, may which result in information leak. hexdump -C /dev/loop0 ##testcase_end Signed-off-by: Dmitry Monakhov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2011-11-16powerpc/ps3: Fix SMP lockdep boot warningGeoff Levand1-32/+32
Move the PS3 IPI message setup from ps3_smp_setup_cpu() to ps3_smp_probe(). Fixes startup warnings like these: ------------[ cut here ]------------ WARNING: at kernel/lockdep.c:2649 Modules linked in: ... ---[ end trace 31fd0ba7d8756001 ]--- Signed-off-by: Geoff Levand <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16powerpc/ps3: Fix lost SMP IPIsGeoff Levand3-1/+25
Fixes the PS3 bootup hang introduced in 3.0-rc1 by: commit 317f394160e9beb97d19a84c39b7e5eb3d7815a sched: Move the second half of ttwu() to the remote cpu Move the PS3's LV1 EOI call lv1_end_of_interrupt_ext() from ps3_chip_eoi() to ps3_get_irq() for IPI messages. If lv1_send_event_locally() is called between a previous call to lv1_send_event_locally() and the coresponding call to lv1_end_of_interrupt_ext() the second event will not be delivered to the target cpu. The PS3's SMP IPIs are implemented using lv1_send_event_locally(), so if two IPI messages of the same type are sent to the same target in a relatively short period of time the second IPI event can become lost when lv1_end_of_interrupt_ext() is called from ps3_chip_eoi(). CC: [email protected] Signed-off-by: Geoff Levand <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16powerpc: Add hvcall.h include to book3s_hv.cMichael Neuling1-0/+1
If you build with KVM and UP it fails with the following due to a missing include. /arch/powerpc/kvm/book3s_hv.c: In function 'do_h_register_vpa': arch/powerpc/kvm/book3s_hv.c:156:10: error: 'H_PARAMETER' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:156:10: note: each undeclared identifier is reported only once for each function it appears in arch/powerpc/kvm/book3s_hv.c:192:12: error: 'H_RESOURCE' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:222:9: error: 'H_SUCCESS' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c: In function 'kvmppc_pseries_do_hcall': arch/powerpc/kvm/book3s_hv.c:228:30: error: 'H_SUCCESS' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:232:7: error: 'H_CEDE' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:234:7: error: 'H_PROD' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:238:10: error: 'H_PARAMETER' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:250:7: error: 'H_CONFER' undeclared (first use in this function) arch/powerpc/kvm/book3s_hv.c:252:7: error: 'H_REGISTER_VPA' undeclared (first use in this function) make[2]: *** [arch/powerpc/kvm/book3s_hv.o] Error 1 Signed-off-by: Michael Neuling <[email protected]> cc: [email protected] (3.1 only) Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16powerpc/trace: Add a dummy stack frame for trace_hardirqs_offKevin Hao1-0/+15
The trace_hardirqs_off will use CALLER_ADDR0 and CALLER_ADDR1. If an exception occurs in user mode, there is only one stack frame on the stack and accessing the CALLER_ADDR1 will causes the following call trace. So we create a dummy stack frame to make trace_hardirqs_off happy. WARNING: at kernel/smp.c:459 Modules linked in: NIP: c0093280 LR: c00930a0 CTR: c0010780 REGS: edb87ae0 TRAP: 0700 Not tainted (3.1.0) MSR: 00021002 <ME,CE> CR: 28002888 XER: 00000000 TASK = edce2ac0[17658] 'mthread-lock-on' THREAD: edb86000 CPU: 5 GPR00: 00000001 edb87b90 edce2ac0 00000005 c0019594 edb87bd8 00000001 00000fe3 GPR08: 00041000 c084138c 4e20120d edb87b90 48002888 1001aa7c 00000000 00000000 GPR16: 48830000 10012a8c 00000000 10000af4 00000001 c0810000 00000000 00000000 GPR24: ee9aa920 c0816a18 00000000 00000005 c0019594 edb87bd8 ee20178c edb87b90 NIP [c0093280] smp_call_function_many+0x214/0x2b4 LR [c00930a0] smp_call_function_many+0x34/0x2b4 Call Trace: [edb87b90] [c00930a0] smp_call_function_many+0x34/0x2b4 (unreliable) [edb87bd0] [c00194ec] __flush_tlb_page+0xac/0x100 [edb87c00] [c001957c] flush_tlb_page+0x3c/0x54 [edb87c10] [c00180ac] ptep_set_access_flags+0x74/0x12c [edb87c40] [c0128068] handle_pte_fault+0x2f0/0x9ac [edb87cb0] [c0128c3c] handle_mm_fault+0x104/0x1dc [edb87ce0] [c05f40f4] do_page_fault+0x2dc/0x630 [edb87e50] [c001078c] handle_page_fault+0xc/0x80 Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16powerpc: Copy down exception vectors after feature fixupsAnton Blanchard6-2/+28
kdump fails because we try to execute an HV only instruction. Feature fixups are being applied after we copy the exception vectors down to 0 so they miss out on any updates. We have always had this issue but it only became critical in v3.0 when we added CFAR support (breaks POWER5) and v3.1 when we added POWERNV (breaks everyone). Signed-off-by: Anton Blanchard <[email protected]> Cc: <[email protected]> [v3.0+] Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16powerpc: panic if we can't instantiate RTASAnton Blanchard1-4/+2
I had to debug a strange situation where all manner of things were failing. SMT threads, storage and network were all completely broken. The root cause was we couldn't find enough memory to instantiate RTAS - this was a network install so the initrd was huge. Instead of limping along and failing in mysterious ways we should just panic up front if RTAS exists and we can't allocate space for it. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16powerpc/4xx: Fix typos in kexec config dependenciesSuzuki Poulose2-2/+2
Kexec is not supported on 47x. 47x is a variant of 44x with slightly different MMU and SMP support. There was a typo in the config dependency for kexec. This patch fixes the same. Signed-off-by: Suzuki K. Poulose <[email protected]> Signed-off-by: Paul Bolle <[email protected]> Cc: Kumar Gala <[email protected]> Cc: Josh Boyer <[email protected]> Cc: linux ppc dev <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16powerpc/fsl: MCU_MPC8349EMITX wants I2C built-in, modular won't do...Al Viro1-1/+1
Signed-off-by: Al Viro <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16powerpc/fsl_udc_core: Fix dumb typoAl Viro1-1/+1
Signed-off-by: Al Viro <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16carma-fpga: Missed switch from of_register_platform_driver()Al Viro2-10/+8
... by 6 months Signed-off-by: Al Viro <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16powerpc: Fix build breakage in jump_label.cAl Viro1-0/+2
Should do what other architectures do and wrap all that code into the appropriate ifdef Signed-off-by: Al Viro <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2011-11-16unicore32, exec: remove redundant set_fs(USER_DS)Mathias Krause1-1/+0
The address limit is already set in flush_old_exec() so this set_fs(USER_DS) is redundant. Signed-off-by: Mathias Krause <[email protected]> Cc: Guan Xuetao <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Acked-by: Guan Xuetao <[email protected]>
2011-11-16unicore32: Fix typo 'PUV3_I2C'Paul Bolle1-2/+2
Signed-off-by: Paul Bolle <[email protected]> Acked-by: Guan Xuetao <[email protected]>
2011-11-15Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds33-332/+82
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: lantiq: use export.h in favour of module.h MAINTAINERS: The MIPS git tree has moved. MIPS: Fix build error due to missing inclusion of <linux/export.h>. MIPS: ASID conflict after CPU hotplug MIPS: Octeon: Fix compile error in arch/mips/cavium-octeon/flash_setup.c MIPS: errloongson2_clock: Fix build error by including linux/module.h STAGING: octeon-ethernet: Fix compile error caused by skb_frag_struct change MIPS: Hook up process_vm_readv and process_vm_writev system calls. MIPS: Kernel hangs occasionally during boot. MIPS: Octeon: Mark SMP-IPI interrupt as IRQF_NO_THREAD MIPS: BCM47xx: fix build with GENERIC_GPIO configuration MIPS: NXP: Remove unused source files. MIPS: Yosemite, Emma: Fix off-by-two in arcs_cmdline buffer size check
2011-11-15Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds4-47/+40
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/radeon/kms: fix segfault in pm rework drm/radeon/kms: fix up gpio i2c mask bits for r4xx drm/radeon: add some missing FireMV pci ids vgaarb: a NULL bridge is acceptable for root devices. drm: Remove utterly bogus preempt_disable() sections
2011-11-15hugetlb: release pages in the error path of hugetlb_cow()Hillf Danton1-0/+2
If we fail to prepare an anon_vma, the {new, old}_page should be released, or they will leak. Signed-off-by: Hillf Danton <[email protected]> Reviewed-by: Andrea Arcangeli <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Johannes Weiner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-11-15drivers/firmware/dmi_scan.c: make dmi_name_in_vendors more focusedJean Delvare1-4/+2
The current implementation of dmi_name_in_vendors() is an invitation to lazy coding and false positives [1]. Searching for a string in 8 know what you're looking for, so you should know where to look. strstr isn't fast, especially when it fails, so we should avoid calling it when it just can't succeed. Looking at the current users of the function, it seems clear to me that they are looking for a system or board vendor name, so let's limit dmi_name_in_vendors to these two DMI fields. This much better matches the function name, BTW. [1] We currently have code looking for short names in DMI data, such as "IBM", "ASUS" or "Acer". I let you guess what will happen the day other vendors ship products named, for example, "SCHREIBMEISTER", "PEGASUS" or "Acerola". Signed-off-by: Jean Delvare <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jesse Barnes <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-11-15oom: do not kill tasks with oom_score_adj OOM_SCORE_ADJ_MINMichal Hocko1-0/+5
Commit c9f01245 ("oom: remove oom_disable_count") has removed the oom_disable_count counter which has been used for early break out from oom_badness so we could never select a task with oom_score_adj set to OOM_SCORE_ADJ_MIN (oom disabled). Now that the counter is gone we are always going through heuristics calculation and we always return a non zero positive value. This means that we can end up killing a task with OOM disabled because it is indistinguishable from regular tasks with 1% resp. CAP_SYS_ADMIN tasks with 3% usage of memory or tasks with oom_score_adj set but OOM enabled. Let's break out early if the task should have OOM disabled. Signed-off-by: Michal Hocko <[email protected]> Acked-by: David Rientjes <[email protected]> Acked-by: KOSAKI Motohiro <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Ying Han <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-11-15drivers/misc/eeprom: fix dependecy on 'PPC_MPC5200_GPIO'Paul Bolle1-1/+1
The driver for the DigsyMTC display configuration EEPROMs device got added by commit 469dded183 ("misc/eeprom: add eeprom access driver for digsy_mtc board"). Its Kconfig symbol depends on PPC_MPC5200_GPIO. But at the time that driver got added PPC_MPC5200_GPIO was already renamed to GPIO_MPC5200, by commit 6eae1ace68 ("gpio: Move mpc5200 gpio driver to drivers/gpio"). So make this driver depend on GPIO_MPC5200. And since GPIO_MPC5200 itself implies that GPIOLIB is set, that dependency can be dropped. Signed-off-by: Paul Bolle <[email protected]> Acked-by: Anatolij Gustschin <[email protected]> Cc: Grant Likely <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-11-15MAINTAINERS: add new cgroup list to CC noticeKAMEZAWA Hiroyuki1-0/+2
As discussed at Kernel Summit(2011), new cgroups mailing list is opened by James. This list is for discussing general cgroup design and patches including all subsystems and for getting more attentions to cgroups/namespaces related issues by developpers. Signed-off-by: KAMEZAWA Hiroyuki <[email protected]> Cc: James Bottomley <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-11-15Revert "leds: save the delay values after a successful call to blink_set()"Johan Hovold1-4/+1
Revert commit 6123b0e274503a0d3588e84fbe07c9aa01bfaf5d. The problem this patch intends to solve has alreadqy been fixed by commit 7a5caabd090b ("drivers/leds/ledtrig-timer.c: fix broken sysfs delay handling"). Signed-off-by: Johan Hovold <[email protected]> Cc: Antonio Ospite <[email protected]> Cc: Johannes Berg <[email protected]> Cc: Richard Purdie <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-11-15KEYS: Fix a NULL pointer deref in the user-defined key typeDavid Howells1-1/+2
Fix a NULL pointer deref in the user-defined key type whereby updating a negative key into a fully instantiated key will cause an oops to occur when the code attempts to free the non-existent old payload. This results in an oops that looks something like the following: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 IP: [<ffffffff81085fa1>] __call_rcu+0x11/0x13e PGD 3391d067 PUD 3894a067 PMD 0 Oops: 0002 [#1] SMP CPU 1 Pid: 4354, comm: keyctl Not tainted 3.1.0-fsdevel+ #1140 /DG965RY RIP: 0010:[<ffffffff81085fa1>] [<ffffffff81085fa1>] __call_rcu+0x11/0x13e RSP: 0018:ffff88003d591df8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000006e RDX: ffffffff8161d0c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88003d591e18 R08: 0000000000000000 R09: ffffffff8152fa6c R10: 0000000000000000 R11: 0000000000000300 R12: ffff88003b8f9538 R13: ffffffff8161d0c0 R14: ffff88003b8f9d50 R15: ffff88003c69f908 FS: 00007f97eb18c720(0000) GS:ffff88003bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 000000003d47a000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process keyctl (pid: 4354, threadinfo ffff88003d590000, task ffff88003c78a040) Stack: ffff88003e0ffde0 ffff88003b8f9538 0000000000000001 ffff88003b8f9d50 ffff88003d591e28 ffffffff810860f0 ffff88003d591e68 ffffffff8117bfea ffff88003d591e68 ffffffff00000000 ffff88003e0ffde1 ffff88003e0ffde0 Call Trace: [<ffffffff810860f0>] call_rcu_sched+0x10/0x12 [<ffffffff8117bfea>] user_update+0x8d/0xa2 [<ffffffff8117723a>] key_create_or_update+0x236/0x270 [<ffffffff811789b1>] sys_add_key+0x123/0x17e [<ffffffff813b84bb>] system_call_fastpath+0x16/0x1b Signed-off-by: David Howells <[email protected]> Acked-by: Jeff Layton <[email protected]> Acked-by: Neil Horman <[email protected]> Acked-by: Steve Dickson <[email protected]> Acked-by: James Morris <[email protected]> Cc: [email protected] Signed-off-by: Linus Torvalds <[email protected]>
2011-11-15Revert "tty/serial: Prevent drop of DCD on suspend for Tegra UARTs"Greg Kroah-Hartman2-16/+0
This reverts commit 9636b755da7b498094bdf15b4ce9f6fd16995e4e. It wasn't supposed to be applied, thanks to Doug for letting me know. Cc: Doug Anderson <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15net-next:asix: V2 Update VERSIONGrant Grundler1-1/+1
Only update VERSION to reflect previous changes. Signed-off-by: Grant Grundler <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-11-15net-next:asix: V2 more fixes for ax88178 phy init sequenceGrant Grundler1-7/+15
Now works on Samsung Series 5 (chromebook) Two fixes here: o use 0x7F mask for phymode o read phyid *AFTER* phy is powered up (via GPIOs) Signed-off-by: Allan Chou <[email protected]> Signed-off-by: Grant Grundler <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-11-15net-next:asix: reduce AX88772 init time by about 2 secondsGrant Grundler1-5/+25
ax88772_reset takes about 2 seconds and is called twice. Once from ax88772_bind() directly and again indirectly from usbnet_open(). Reset the USB FW/Phy enough to blink the LEDs when inserted. Signed-off-by: Allan Chou <[email protected]> Signed-off-by: Grant Grundler <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-11-15net-next:asix:poll in asix_get_phyid in case phy not readyGrant Grundler1-2/+10
Sometimes the phy isn't ready after reset...poll and pray it will be soon. Signed-off-by: Freddy Xin <[email protected]> Signed-off-by: Grant Grundler <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-11-15net-next:asix:PHY_MODE_RTL8211CL should be 0xCGrant Grundler1-1/+1
Use correct value for rtl phy support. (rtl phy are in AX88178 devices like NWU220G and USB2-ET1000). Signed-off-by: Allan Chou <[email protected]> Tested-by: Grant Grundler <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-11-15sparc: Stash orig_i0 into %g6 instead of %g2David S. Miller3-11/+31
As per the comments added by this commit, %g2 turns out to not be a usable place to save away orig_i0 for syscall restart handling. In fact all of %g2, %g3, %g4, and %g5 are assumed to be saved across a system call by various bits of code in glibc. %g1 can't be used because that holds the syscall number, which would need to be saved and restored for syscall restart handling too, and that would only compound our problems :-) This leaves us with %g6 and %g7 which are for "system use". %g7 is used as the "thread register" by glibc, but %g6 is used as a compiler and assembler temporary scratch register. And in no instance is %g6 used to hold a value across a system call. Therefore %g6 is safe for storing away orig_i0, at least for now. Signed-off-by: David S. Miller <[email protected]>
2011-11-15PM / driver core: disable device's runtime PM during shutdownPeter Chen1-0/+3
There may be an issue when the user issue "reboot/shutdown" command, then the device has shut down its hardware, after that, this runtime-pm featured device's driver will probably be scheduled to do its suspend routine, and at its suspend routine, it may access hardware, but the device has already shutdown physically, then the system hang may be occurred. I ran out this issue using an auto-suspend supported USB devices, like 3G modem, keyboard. The usb runtime suspend routine may be scheduled after the usb controller has been shut down, and the usb runtime suspend routine will try to suspend its roothub(controller), it will access register, then the system hang occurs as the controller is shutdown. Signed-off-by: Peter Chen <[email protected]> Acked-by: Ming Lei <[email protected]> Acked-by: Greg Kroah-Hartman <[email protected]> Cc: [email protected] Signed-off-by: Rafael J. Wysocki <[email protected]>
2011-11-15xfs: use doalloc flag in xfs_qm_dqattach_one()Mitsuo Hayasaka1-1/+2
The doalloc arg in xfs_qm_dqattach_one() is a flag that indicates whether a new area to handle quota information will be allocated if needed. Originally, it was passed to xfs_qm_dqget(), but has been removed by the following commit (probably by mistake): commit 8e9b6e7fa4544ea8a0e030c8987b918509c8ff47 Author: Christoph Hellwig <[email protected]> Date: Sun Feb 8 21:51:42 2009 +0100 xfs: remove the unused XFS_QMOPT_DQLOCK flag As the result, xfs_qm_dqget() called from xfs_qm_dqattach_one() never allocates the new area even if it is needed. This patch gives the doalloc arg to xfs_qm_dqget() in xfs_qm_dqattach_one() to fix this problem. Signed-off-by: Mitsuo Hayasaka <[email protected]> Cc: Alex Elder <[email protected]> Cc: Christoph Hellwig <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Signed-off-by: Ben Myers <[email protected]>
2011-11-15RS485: fix inconsistencies in the meaning of some variablesClaudio Scordino4-30/+24
The crisv10.c and the atmel_serial.c serial drivers intepret the fields of the serial_rs485 structure in a different way. In particular, crisv10.c uses SER_RS485_RTS_AFTER_SEND and SER_RS485_RTS_ON_SEND for the voltage of the RTS pin; atmel_serial.c, instead, uses these values to know if a delay must be set before and after sending. This patch makes the usage of these variables consistent across all drivers and fixes the Documentation as well. From now on, SER_RS485_RTS_AFTER_SEND and SER_RS485_RTS_ON_SEND will be used to set the voltage of the RTS pin (as in the crisv10.c driver); the delay will be understood by looking only at the value of delay_rts_before_send and delay_rts_after_send. Signed-off-by: Claudio Scordino <[email protected]> Signed-off-by: Darron Black <[email protected]> Acked-by: Jesper Nilsson <[email protected]> Acked-by: Nicolas Ferre <[email protected]> Acked-by: Alan Cox <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15pch_uart: Fix DMA resource leak issueTomoya MORINAGA1-2/+2
Changing UART mode PIO->DMA->PIO->DMA like below, pch_uart driver can't get DMA channel resource. setserial /dev/ttyPCH0 ^low_latency setserial /dev/ttyPCH0 low_latency CAUSE: Changing mode using setserial command, ".startup" function which gets DMA channel is called before ".verify_port" function which sets dma-flag(use_dma/use_dma_flag) as 1. PIO->DMA .startup: Since dma-flag is 0, DMA channel is not requested. .verify_port: dma-flag is set as 1. .shutdown: N/A DMA->PIO .startup: Since dma-flag is 1, DMA channel is requested. .verify_port: dma-flag is set as 0. .shutdown: Since dma-flag is 0, DMA channel is not released. This means DMA channel resource leak occurs. Next time, this driver can't get DMA channel resource forever. MODIFICATION: Currently, when release DMA channel resource, this driver checks dma-flag. However, this specification occurs the above issue. This driver must check whether dma_request_channel is executed or not. The values are saved in private data variable "chan_tx/chan_tx". These variables mean if the value is NULL, DMA channel is not requested, if not NULL, DMA channel is requested. This patch fixes the issue. Signed-off-by: Tomoya MORINAGA <[email protected]> Acked-by: Alan Cox <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15serial,mfd: Fix CMSPAR setupAlan Cox1-3/+1
This is referenced the wrong way. Mika Westerberg added some checks to the tty to support multiple console, but the real problem is simply referencing the termios object via the wrong path. Signed-off-by: Alan Cox <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15tty/serial: Prevent drop of DCD on suspend for Tegra UARTsDoug Anderson2-0/+16
On Tegra UARTs (except UART1), the DTR / DCD / DSR lines are not externally accessible. Instead, the DTR line internally appears to be looped back to be the input to the DCD and DSR lines. The net effect of this is that when we drop DTR (like when we suspend), we'll see DCD drop too. ...and when we see DCD drop, we treat that as a hangup. In order to prevent this hangup from occurring at every sleep, we need to force DTR to remain high on Tegra UARTs. This patch uses the mcr_mask / mcr_force fields, which were originally added for the kludge ALPHA_KLUDGE_MCR. Using these fields does not prevent us from removing ALPHA_KLUDGE_MCR--we can just remove the "if" tests I have added and always init mcr_mask / mcr_force from the serial8250_config. NOTE: If we have people that are using UARTA on a Tegra and need to control DTR, we'll need to either add a separate port type for UARTA or we'll need to add some tegra-specific code to detect whether the DTR needs to be left high. Signed-off-by: Doug Anderson <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15pch_uart: Change company name OKI SEMICONDUCTOR to LAPIS SemiconductorTomoya MORINAGA1-3/+3
On October 1 in 2011, OKI SEMICONDUCTOR Co., Ltd. changed the company name in to LAPIS Semiconductor Co., Ltd. Signed-off-by: Tomoya MORINAGA <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15pch_uart: Support new device LAPIS Semiconductor ML7831 IOHTomoya MORINAGA2-7/+15
ML7831 is companion chip for Intel Atom E6xx series. Signed-off-by: Tomoya MORINAGA <[email protected]> Acked-by: Alan Cox <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15pch_uart: Fix hw-flow control issueTomoya MORINAGA1-0/+1
Using hardware flow control, currently, register of the control-bit(AFE) is not set. This patch fixes the issue. Signed-off-by: Tomoya MORINAGA <[email protected]> Acked-by: Alan Cox <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15tty: hvc_dcc: Fix duplicate character inputsStephen Boyd1-0/+2
Reading from the DCC grabs a character from the buffer and clears the status bit. Since this is a context-changing operation, instructions following the character read that rely on the status bit being accurate need to be synchronized with an ISB. In this case, the status bit check needs to execute after the character read otherwise we run the risk of reading the character and checking the status bit before the read can clear the status bit in the first place. When this happens, the user will see the same character they typed twice, instead of once. Add an ISB after the read and the write, so that the status check is synchronized with the read/write operations. Signed-off-by: Stephen Boyd <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15jsm: Change maintainershipLucas Kannebley Tavares1-1/+1
Breno Leitao has passed the maintainership on to me. Signed-off-by: Lucas Kannebley Tavares <[email protected]> Acked-by: Breno Leitao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15drm/radeon/kms: fix segfault in pm reworkAlex Deucher1-15/+5
Signed-off-by: Alex Deucher <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
2011-11-15drm/radeon/kms: fix up gpio i2c mask bits for r4xxAlex Deucher1-0/+12
Fixes i2c test failures when i2c_algo_bit.bit_test=1. The hw doesn't actually require a mask, so just set it to the default mask bits for r1xx-r4xx radeon ddc. Signed-off-by: Alex Deucher <[email protected]> Cc: [email protected] Cc: Jean Delvare <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
2011-11-15drm/radeon: add some missing FireMV pci idsAlex Deucher1-0/+2
Noticed by Egbert. Signed-off-by: Alex Deucher <[email protected]> Cc: [email protected] Cc: Egbert Eich <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
2011-11-15uio: documentation fixupsGeoff Thorpe1-1/+6
The 'name' attribute of struct uio_mem wasn't documented, and the note about 'kobj' is stale and needs to be changed to 'map'. Signed-off-by: Geoff Thorpe <[email protected]> Signed-off-by: "Hans J. Koch" <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-11-15device.h: Fix struct member documentationMarcos Paulo de Souza1-1/+1
Fix warning of make xmldocs of documention of the struct member iommu_ops from struct bus_type. Signed-off-by: Marcos Paulo de Souza <[email protected]> Acked-by: Randy Dunlap <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
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