- 03 4月, 2015 24 次提交
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由 Tomas Winkler 提交于
Replace open coded check for cl->state !=/== MEI_FILE_CONNECTED with mei_cl_is_connected function. Note that cl->state != MEI_FILE_CONNECTED is not the same as cl->state == MEI_FILE_DISCONNECTED Signed-off-by: NTomas Winkler <tomas.winkler@intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Tomas Winkler 提交于
mei_poll returned with POLLIN w/o checking whether the operation has really completed. remove redundant check and locking in amthif specific handler Signed-off-by: NTomas Winkler <tomas.winkler@intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Haiyang Zhang 提交于
Most of the retries can be done within a millisecond successfully, so we sleep 1ms before the first retry, then gradually increase the retry interval to 2^n with max value of 2048ms. Doing so, we will have shorter overall delay time, because most of the cases succeed within 1-2 attempts. Signed-off-by: NHaiyang Zhang <haiyangz@microsoft.com> Reviewed-by: NK. Y. Srinivasan <kys@microsoft.com> Reviewed-by: NDexuan Cui <decui@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Vitaly Kuznetsov 提交于
... and simplify alloc_balloon_pages() interface by removing redundant alloc_error from it. If we happen to enter balloon_up() with balloon_wrk.num_pages = 0 we will enter infinite 'while (!done)' loop as alloc_balloon_pages() will be always returning 0 and not setting alloc_error. We will also be sending a meaningless message to the host on every iteration. The 'alloc_unit == 1 && alloc_error -> num_ballooned == 0' change and alloc_error elimination requires a special comment. We do alloc_balloon_pages() with 2 different alloc_unit values and there are 4 different alloc_balloon_pages() results, let's check them all. alloc_unit = 512: 1) num_ballooned = 0, alloc_error = 0: we do 'alloc_unit=1' and retry pre- and post-patch. 2) num_ballooned > 0, alloc_error = 0: we check 'num_ballooned == num_pages' and act accordingly, pre- and post-patch. 3) num_ballooned > 0, alloc_error > 0: we report this chunk and remain within the loop, no changes here. 4) num_ballooned = 0, alloc_error > 0: we do 'alloc_unit=1' and retry pre- and post-patch. alloc_unit = 1: 1) num_ballooned = 0, alloc_error = 0: this can happen in two cases: when we passed 'num_pages=0' to alloc_balloon_pages() or when there was no space in bl_resp to place a single response. The second option is not possible as bl_resp is of PAGE_SIZE size and single response 'union dm_mem_page_range' is 8 bytes, but the first one is (in theory, I think that Hyper-V host never places such requests). Pre-patch code loops forever, post-patch code sends a reply with more_pages = 0 and finishes. 2) num_ballooned > 0, alloc_error = 0: we ran out of space in bl_resp, we report partial success and remain within the loop, no changes pre- and post-patch. 3) num_ballooned > 0, alloc_error > 0: pre-patch code finishes, post-patch code does one more try and if there is no progress (we finish with 'num_ballooned = 0') we finish. So we try a bit harder with this patch. 4) num_ballooned = 0, alloc_error > 0: both pre- and post-patch code enter 'more_pages = 0' branch and finish. So this patch has two real effects: 1) We reply with an empty response to 'num_pages=0' request. 2) We try a bit harder on alloc_unit=1 allocations (and reply with an empty tail reply in case we fail). An empty reply should be supported by host as we were able to send it even with pre-patch code when we were not able to allocate a single page. Suggested-by: NLaszlo Ersek <lersek@redhat.com> Signed-off-by: NVitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Vitaly Kuznetsov 提交于
Commit 79208c57 ("Drivers: hv: hv_balloon: Make adjustments in computing the floor") was inacurate as it introduced a jump in our piecewiese linear 'floor' function: At 2048MB we have: Left limit: 104 + 2048/8 = 360 Right limit: 256 + 2048/16 = 384 (so the right value is 232) We now have to make an adjustment at 8192 boundary: 232 + 8192/16 = 744 512 + 8192/32 = 768 (so the right value is 488) Suggested-by: NLaszlo Ersek <lersek@redhat.com> Signed-off-by: NVitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Vitaly Kuznetsov 提交于
Currently we add memory in 128Mb blocks but the request from host can be aligned differently. In such case we add a partially backed block and when this block goes online we skip onlining pages which are not backed (hv_online_page() callback serves this purpose). When we receive next request for the same host add region we online pages which were not backed before with hv_bring_pgs_online(). However, we don't check if the the block in question was onlined and online this tail unconditionally. This is bad as we avoid all online_pages() logic: these pages are not accounted, we don't send notifications (and hv_balloon is not the only receiver of them),... And, first of all, nobody asked as to online these pages. Solve the issue by checking if the last previously backed page was onlined and onlining the tail only in case it was. Signed-off-by: NVitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Dexuan Cui 提交于
It's not necessary any longer, since we can safely run the blocking message handlers in vmbus_connection.work_queue now. Signed-off-by: NDexuan Cui <decui@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Dexuan Cui 提交于
Since the 2 fucntions can safely run in vmbus_connection.work_queue without hang, we don't need to schedule new work items into the per-channel workqueue. Actally we can even remove the per-channel workqueue now -- we'll do it in the next patch. Signed-off-by: NDexuan Cui <decui@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Dexuan Cui 提交于
A work item in vmbus_connection.work_queue can sleep, waiting for a new host message (usually it is some kind of "completion" message). Currently the new message will be handled in the same workqueue, but since work items in the workqueue is serialized, we actually have no chance to handle the new message if the current work item is sleeping -- as as result, the current work item will hang forever. K. Y. has posted the below fix to resolve the issue: Drivers: hv: vmbus: Perform device register in the per-channel work element Actually we can simplify the fix by directly running non-blocking message handlers in the dispatch tasklet (inspired by K. Y.). This patch is the fundamental change. The following 2 patches will simplify the message offering and rescind-offering handling a lot. Signed-off-by: NDexuan Cui <decui@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Mathieu Poirier 提交于
Keeping drivers related to HW tracing on ARM, i.e coresight, under "drivers/coresight" doesn't make sense when other architectures start rolling out technologies of the same nature. As such creating a new "drivers/hwtracing" directory where all drivers of the same kind can reside, reducing namespace pollution under "drivers/". Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Mathieu Poirier 提交于
Knowing the state of various control register is always useful for degging and tuning. As such add an entry in sysfs that expose to userspace the most important registers. Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Kaixu Xia 提交于
The coresight-default-sink configuration option has been removed from the framework. As such remove it from DT and bindings. Signed-off-by: NKaixu Xia <xiakaixu@huawei.com> Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Xia Kaixu 提交于
>From the TMC TRM, the ETF can be configured as buffer mode, so ETF can be a sink type. Signed-off-by: NXia Kaixu <kaixu.xia@linaro.org> Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Mathieu Poirier 提交于
Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Mathieu Poirier 提交于
Most CoreSight blocks are 64-bit ready. As such move configuration entries from "arch/arm/Kconfig.config" to the driver's subdirectory and source the newly created Kconfig from architecture specific Kconfig.debug files. Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Mathieu Poirier 提交于
Compiling coresight drivers with a 64-bit compiler highlights a couple of formatting issues, which are fixed by this patch. Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Mathieu Poirier 提交于
Function "get_logical_index()" is not available on arm64. Instead of adding the function simply using "of_get_cpu_node()" and comparing the return value with cpu handles yields the same result. Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Dan Carpenter 提交于
The code here is checking for IS_ERR() when request_mem_region() only returns NULL on error and never an ERR_PTR. Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Eli Billauer 提交于
The API allows the application to flush a host-to-FPGA stream by calling write() with the data count set to zero. Before this patch, copy_from_user() was called with a non-zero byte count, which possibly made it attempt to read from unmapped user memory. Such attempts caused the driver to return -EFAULT instead of 0, even though the desired operation went through fine. This patch ensures the driver returns 0 on a successful flush. Signed-off-by: NEli Billauer <eli.billauer@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Michael S. Tsirkin 提交于
pci core now disables msi on probe automatically, drop this from device-specific code. Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Ivan T. Ivanov 提交于
Qualcomm PMIC arbiter driver already depends on ARCH_QCOM, which could be either ARM or ARM64. New version of the PMIC arbiter controller is available on 64 bit platforms. Remove ARM dependency to allow driver to be build for 64 bit platforms. Signed-off-by: NIvan T. Ivanov <ivan.ivanov@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Joe Perches 提交于
Use the normal return values for bool functions Signed-off-by: NJoe Perches <joe@perches.com> Reviewed-by: NAmit Shah <amit.shah@redhat.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Tom Van Braeckel 提交于
Make the miscdevice accessible through the file's private_data. Previously, this was done only when an open() file operation had been registered. If no custom open() file operation was defined, private_data was set to NULL. This subtle quirk was confusing, to the point where kernel code registered *empty* file open operations to have private_data point to the misc device structure and avoid duplicating that logic. And it could easily lead to bugs, where the addition or removal of a custom open() file operation surprisingly changes the initial value of a file's private_data structure. To resolve this, we now place the miscdevice in the file's private_data member unconditionally when open() is called. Signed-off-by: NTom Van Braeckel <tomvanbraeckel@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Greg Kroah-Hartman 提交于
This reverts commit 4d8beff2. It causes build warnings, and it's incorrect as we do write to this structure. Reported-by: NStephen Rothwell <sfr@canb.auug.org.au> Cc: Fabian Frederick <fabf@skynet.be> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 01 4月, 2015 1 次提交
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由 Greg Kroah-Hartman 提交于
Merge tag 'extcon-next-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next Chanwoo writes: Update extcon for v4.1 This patchset include two new extcon driver and fix minor issue of extcon driver. Detailed description for patchset: 1. new extcon-max77843.c and extcon-usb-gpio.c extcon driver - extcon-max77843.c driver support the MAXIM MAX77843 MUIC (Micor-USB Interface Controller) device which handles the various external connectors such as TA/USB /USB-HOST/JIG and so on. - extcon-usb-gpio.c driver support the USB and USB-HOST cable detection by using the GPIO pin which is connected to USB ID pin. This GPIO pin updates the USB cable states. 2. Rename the filename of extcon core driver and add missing locking mechanism - Rename the previous extcon-class driver.c as extcon.c because '-class' postfix is not necessary word. - extcon core driver (extcon.c) used the raw_notifier_chain. It must be protected by locking mechanism to avoid the list changing while extcon_update_state() is executed. 3. Fix minor issue of extcon drviers - Fix cable name by using the capital letter instead of small letter on extcon-max77693.c driver. - Clean-up code of extcon-arizona.c to detect headphone cable. - Fix the wrong return type and variable type on extcon-max77843.c. - Fix the checkpatch warning of all extcon drivers.
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- 27 3月, 2015 7 次提交
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由 Alex Smith 提交于
Add a driver for the NAND/External Memory Controller (NEMC) on JZ4780 and later SoCs. The primary function of this driver is to configure parameters, such as timings, for external memory devices using data supplied in the device tree. Devices connected to the NEMC are represented in the DT as children of the NEMC node, the driver uses optional properties specified in these child nodes to configure the parameters of each bank. Signed-off-by: NAlex Smith <alex@alex-smith.me.uk> Signed-off-by: NZubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Alex Smith 提交于
Add device tree bindings for the NAND/External Memory Controller (NEMC) on Ingenic JZ4780 Signed-off-by: NAlex Smith <alex@alex-smith.me.uk> Signed-off-by: NZubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Gilad Avidov 提交于
Qualcomm PMIC Arbiter version-2 changes from version-1 are: - Some different register offsets. - New channel register space, one per PMIC peripheral (ppid). All tx traffic uses these channels. - New observer register space. All rx trafic uses this space. - Different command format for spmi command registers. Reviewed-by: NSagar Dharia <sdharia@codeaurora.org> Signed-off-by: NGilad Avidov <gavidov@codeaurora.org> Tested-by: NIvan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Gilad Avidov 提交于
According to spmi spec a slave powers up into startup state and then transitions into active state. Thus, the wakeup command is not required before calling the slave's probe. The wakeup command is only needed for slaves that are in sleep state after receiving the sleep command. Cc: galak@codeaurora.org Reviewed-by: NStephen Boyd <sboyd@codeaurora.org> Reviewed-by: NSagar Dharia <sdharia@codeaurora.org> Acked-by: NJosh Cartwright <joshc@eso.teric.us> Signed-off-by: NGilad Avidov <gavidov@codeaurora.org> Tested-by: NIvan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Nicolas Ferre 提交于
I take over the maintainship from Voice. Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com> Cc: Mark Brown <broonie@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: NBo Shen <voice.shen@atmel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 K. Y. Srinivasan 提交于
Don't wait after sending request for offers to the host. This wait is unnecessary and simply adds 5 seconds to the boot time. Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Fabian Frederick 提交于
of_device_id is always used as const. (See driver.of_match_table and open firmware functions) Signed-off-by: NFabian Frederick <fabf@skynet.be> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 25 3月, 2015 8 次提交
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由 Joe Perches 提交于
The seq_printf return value, because it's frequently misused, will eventually be converted to void. See: commit 1f33c41c ("seq_file: Rename seq_overflow() to seq_has_overflowed() and make public") Signed-off-by: NJoe Perches <joe@perches.com> Acked-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Fabian Frederick 提交于
of_device_id is always used as const. (See driver.of_match_table and open firmware functions) Signed-off-by: NFabian Frederick <fabf@skynet.be> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Fabian Frederick 提交于
of_device_id is always used as const. (See driver.of_match_table and open firmware functions) Signed-off-by: NFabian Frederick <fabf@skynet.be> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 K. Y. Srinivasan 提交于
Handle the case when the write to the ringbuffer fails. In this case, unconditionally signal the host. Since we may have deferred signalling the host based on the kick_q parameter, signalling the host unconditionally in this case deals with the issue. Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 K. Y. Srinivasan 提交于
Export the vmbus_sendpacket_pagebuffer_ctl() interface. This export will be used by the netvsc driver. Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Vaughan Cao 提交于
If freeze fails, vss_operate will re-enter itself to thaw. But it forgets to call endmntent() before it recalls setmntent() again. Signed-off-by: NVaughan Cao <vaughan.cao@oracle.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 K. Y. Srinivasan 提交于
When a channel has been rescinded, the close operation is a noop. Restructure the code so we deal with the rescind condition after we properly cleanup the channel. I would like to thank Dexuan Cui <decui@microsoft.com> for observing this problem. The current code leaks memory when the channel is rescinded. The current char-next branch is broken and this patch fixes the bug. Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Dexuan Cui 提交于
Without this patch, hv_fcopy_daemon's hv_copy_data() -> pwrite() will fail for >2GB file offset. The current char-next branch is broken and this patch fixes the bug. Signed-off-by: NAlex Ng <alexng@microsoft.com> Signed-off-by: NDexuan Cui <decui@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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