If the device suspend process begins before the mmc host's autosuspend
timeout, the host will continue running during system sleep. Avoid
this by forcing runtime suspend during a global suspend transition.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20210113052421.36553-1-samuel@sholland.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch adds new compatible string to differentiate
between the controllers versions included in the AP807
north bridge. Thanks to this change, the SoCs which use
AP807 will not run unintentionally in the 'slow mode'
with disabled UHS modes.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Link: https://lore.kernel.org/r/20210112094655.12274-3-kostap@marvell.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch adds DT binding description for the Xenon
SD/MMC controller included in AP807 north bridge.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Link: https://lore.kernel.org/r/20210112094655.12274-2-kostap@marvell.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Change code style of mapping the syscon in sdhci_arasan_update_support64b()
for readability and consistency.
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20210111155001.12307-3-muhammad.husaini.zulkifli@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Commit 36c6aadaae ("mmc: sdhci-of-arasan: Add support for Intel Keem Bay")
introduces syscon map sdhci_arasan_update_support64b(). Unfortunately,
kernel-doc format script tool has not been run before and causing warning
on the documentation style.
Below is the output when running the kernel-doc script tool:
drivers/mmc/host/sdhci-of-arasan.c:1388: warning: contents before sections
Let's fix this by using standard conventions kernel-doc format.
Fixes: 36c6aadaae ("mmc: sdhci-of-arasan: Add support for Intel Keem Bay")
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20210111155001.12307-2-muhammad.husaini.zulkifli@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The SDHCI controller on SDX55 is based on MSM SDHCI v5 IP. Hence,
document the compatible with "qcom,sdhci-msm-v5" as the fallback.
While at it, let's also sort the compatibles in ascending order.
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210107143118.2386-1-manivannan.sadhasivam@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add a vendor-specific bit named GLI_9763E_MB_ERP_ON at the bit7 of
register 888h to decide whether to enhance random R/W performance
of GL9763E. CQHCI support will be enabled if and only if the bit is
set and the GLI_9763E_MB_CMQ_OFF bit is not set.
Signed-off-by: Renius Chen <reniuschengl@gmail.com>
Link: https://lore.kernel.org/r/20210106085332.5494-1-reniuschengl@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
According to the datasheet, this controller needs retune when
cmd or data timeout happens. So, add a condition into .check_retune().
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/1608708622-29668-3-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Currently, busy timeout is not checked for data transfer command. But,
if the temperature condition changes, the data cannot be acquired
correctly and timeout may occur. Also, we could reproduce an issue by
using mmc_test driver (e.g. "Correct xfer_size at write (start
failure)"). Therefore, this adds timeout error check.
Signed-off-by: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com>
[saito: rework commit message.]
Signed-off-by: Takeshi Saito <takeshi.saito.xv@renesas.com>
[shimoda: rebase, add commit description]
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/1608708622-29668-2-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Enable SGDMA support for SD_IO_RW_EXTENDED and add proper check
for scatterlist size alignment in block mode.
According to documentation, in SDIO block mode meson-gx DMA could
only handle buffers with sizes that are multiples of SDIO block size.
Some SDIO drivers like brcmfmac use scatterlist API, but do not enforce
proper scatterlist buffer size alignemnt, this looks like a root cause
of non-working CMD53.
Some minor style fixes.
Signed-off-by: Dmitry Lebed <lebed.dmitry@gmail.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20201218075312.67338-1-lebed.dmitry@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
when get request SW timeout, if CMD/DAT xfer done irq coming right now,
then there is race between the msdc_request_timeout work and irq handler,
and the host->cmd and host->data may set to NULL in irq handler. also,
current flow ensure that only one path can go to msdc_request_done(), so
no need check the return value of cancel_delayed_work().
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Link: https://lore.kernel.org/r/20201218071611.12276-1-chaotian.jing@mediatek.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add pre_req and post_req support to improve performance.
Inspired by a patch in the BSP by Masaharu Hayakawa.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/1608114572-1892-3-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
According to the latest datasheet, the internal DMAC buffer alignment
R-Car Gen3 SDHI HW should be 128-bytes. So, fix it.
Signed-off-by: Takeshi Saito <takeshi.saito.xv@renesas.com>
[shimoda: revise commit description, rebase]
Fixes: 2a68ea7896 ("mmc: renesas-sdhi: add support for R-Car Gen3 SDHI DMAC")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/1608114572-1892-2-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The MSM SDHCI driver always set the "actual_clock" field to 0. It had
a comment about it not being needed because we weren't using the
standard SDHCI divider mechanism and we'd just fallback to
"host->clock". However, it's still better to provide the actual
clock. Why?
1. It will make timeout calculations slightly better. On one system I
have, the eMMC requets 200 MHz (for HS400-ES) but actually gets 192
MHz. These are close, but why not get the more accurate one.
2. If things are seriously off in the clock driver and it's missing
rates or picking the wrong rate (maybe it's rounding up instead of
down), this will make it much more obvious what's going on.
NOTE: we have to be a little careful here because the "actual_clock"
field shouldn't include the multiplier that sdhci-msm needs
internally.
Suggested-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Link: https://lore.kernel.org/r/20201214092048.v5.2.I7564620993acd4baa63fa0e3925ca879a86d3ee3@changeid
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
As talked about in commit 5e4b7e82d4 ("clk: qcom: gcc-sdm845: Use
floor ops for sdcc clks"), most clocks handled by the Qualcomm clock
drivers are rounded _up_ by default instead of down. We should make
sure SD/MMC clocks are always rounded down in the clock drivers.
Let's add a warning in the Qualcomm SDHCI driver to help catch the
problem.
This would have saved a bunch of time [1].
NOTE: this doesn't actually fix any problems, it just makes it obvious
to devs that there is a problem and that should be an indication to
fix the clock driver.
[1] http://lore.kernel.org/r/20201210102234.1.I096779f219625148900fc984dd0084ed1ba87c7f@changeid
Suggested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20201214092048.v5.1.Iec3430c7d3c2a29262695edef7b82a14aaa567e5@changeid
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch adds support for A100 MMC controller, which use word address
for internal dma.
Signed-off-by: Yangtao Li <frank@allwinnertech.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20201211011934.6171-10-andre.przywara@arm.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add binding for A100's and H616's mmc and emmc controller.
Signed-off-by: Yangtao Li <frank@allwinnertech.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20201211011934.6171-9-andre.przywara@arm.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The SDHCI_PRESET_FOR_* registers are not set(all read as zeros), so
set the quirk.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20201210165510.76b917e5@xhacker.debian
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
A call to 'ausdhi6_dma_release()' to undo a previous call to
'usdhi6_dma_request()' is missing in the error handling path of the probe
function.
It is already present in the remove function.
Fixes: 75fa9ea6e3 ("mmc: add a driver for the Renesas usdhi6rol0 SD/SDIO host controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20201217210922.165340-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
'sdhci_remove_host()' and 'sdhci_pltfm_free()' should be used in place of
'mmc_remove_host()' and 'mmc_free_host()'.
This avoids some resource leaks, is more in line with the error handling
path of the probe function, and is more consistent with other drivers.
Fixes: fb8bd90f83 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Orson Zhai <orson.zhai@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20201217204236.163446-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
'dma_request_chan()' calls should be balanced by a corresponding
'dma_release_channel()' call.
Add the missing call both in the error handling path of the probe function
and in the remove function.
Fixes: ff65ffe46d ("mmc: Add Actions Semi Owl SoCs SD/MMC driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20201209194202.54099-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
- handle boolean device properties imported from Apple firmware
correctly.
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Merge tag 'efi-urgent-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fix from Borislav Petkov:
"A single fix from Lukas: handle boolean device properties imported
from Apple firmware correctly"
* tag 'efi-urgent-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/apple-properties: Reinstate support for boolean properties
toolchains which do not generate section symbols anymore. And a cleanup
ontop.
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Merge tag 'x86_entry_for_v5.11_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Borislav Petkov:
"A single fix for objtool to generate proper unwind info for newer
toolchains which do not generate section symbols anymore. And a
cleanup ontop.
This was originally going to go during the next merge window but
people can already trigger a build error with binutils-2.36 which
doesn't emit section symbols - something which objtool relies on - so
let's expedite it"
* tag 'x86_entry_for_v5.11_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/entry: Remove put_ret_addr_in_rdi THUNK macro argument
x86/entry: Emit a symbol for register restoring thunk
the recent UIP handling changes the time readout of non-existent RTCs hangs
forever as the read returns always 0xFF which means the UIP bit is
set. Sanity check the RTC before registering by checking the RTC_VALID
register for correctness.
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Merge tag 'timers-urgent-2021-01-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A fix for handling advertised, but non-existent 146818 RTCs correctly.
With the recent UIP handling changes the time readout of non-existent
RTCs hangs forever as the read returns always 0xFF which means the UIP
bit is set.
Sanity check the RTC before registering by checking the RTC_VALID
register for correctness"
* tag 'timers-urgent-2021-01-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rtc: mc146818: Detect and handle broken RTCs
condition wrong when moving SYSCALL_EMU away from TIF flags.
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Merge tag 'core-urgent-2021-01-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull single stepping fix from Thomas Gleixner:
"A single fix for the single step reporting regression caused by
getting the condition wrong when moving SYSCALL_EMU away from TIF
flags"
[ There's apparently another problem too, fix pending ]
* tag 'core-urgent-2021-01-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
entry: Unbreak single step reporting behaviour
One fix for a bug in our soft interrupt masking, which could lead to interrupt
replaying recursing, causing spurious interrupts.
Thanks to:
Nicholas Piggin.
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Merge tag 'powerpc-5.11-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
"One fix for a bug in our soft interrupt masking, which could lead to
interrupt replaying recursing, causing spurious interrupts.
Thanks to Nicholas Piggin"
* tag 'powerpc-5.11-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s: prevent recursive replay_soft_interrupts causing superfluous interrupt
Pull i2c fix from Wolfram Sang:
"Just one I2C driver update this time"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: mediatek: Move suspend and resume handling to NOIRQ phase
Pull LED fixes from Pavel Machek:
"This pull is due to 'leds: trigger: fix potential deadlock with
libata' -- people find the warn annoying.
It also contains new driver and two trivial fixes"
* 'for-rc-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: rt8515: Add Richtek RT8515 LED driver
dt-bindings: leds: Add DT binding for Richtek RT8515
leds: trigger: fix potential deadlock with libata
leds: leds-ariel: convert comma to semicolon
leds: leds-lm3533: convert comma to semicolon
Highlights include:
Bugfixes:
- SUNRPC: Handle 0 length opaque XDR object data properly
- Fix a layout segment leak in pnfs_layout_process()
- pNFS/NFSv4: Update the layout barrier when we schedule a layoutreturn
- pNFS/NFSv4: Improve rejection of out-of-order layouts
- pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process()
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Merge tag 'nfs-for-5.11-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client fixes from Trond Myklebust:
- SUNRPC: Handle 0 length opaque XDR object data properly
- Fix a layout segment leak in pnfs_layout_process()
- pNFS/NFSv4: Update the layout barrier when we schedule a layoutreturn
- pNFS/NFSv4: Improve rejection of out-of-order layouts
- pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process()
* tag 'nfs-for-5.11-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
SUNRPC: Handle 0 length opaque XDR object data properly
SUNRPC: Move simple_get_bytes and simple_get_netobj into private header
pNFS/NFSv4: Improve rejection of out-of-order layouts
pNFS/NFSv4: Update the layout barrier when we schedule a layoutreturn
pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process()
pNFS/NFSv4: Fix a layout segment leak in pnfs_layout_process()
This adds a driver for the Richtek RT8515 dual channel
torch/flash white LED driver.
This LED driver is found in some mobile phones from
Samsung such as the GT-S7710 and GT-I8190.
A V4L interface is added.
We do not have a proper datasheet for the RT8515 but
it turns out that RT9387A has a public datasheet and
is essentially the same chip. We designed the driver
in accordance with this datasheet. The day someone
needs to drive a RT9387A this driver can probably
easily be augmented to handle that chip too.
Sakari Ailus, Pavel Machek and Andy Shevchenko helped
significantly in getting this driver right.
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: newbytee@protonmail.com
Cc: Stephan Gerhold <stephan@gerhold.net>
Cc: linux-media@vger.kernel.org
Cc: phone-devel@vger.kernel.org
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
We have the following potential deadlock condition:
========================================================
WARNING: possible irq lock inversion dependency detected
5.10.0-rc2+ #25 Not tainted
--------------------------------------------------------
swapper/3/0 just changed the state of lock:
ffff8880063bd618 (&host->lock){-...}-{2:2}, at: ata_bmdma_interrupt+0x27/0x200
but this lock took another, HARDIRQ-READ-unsafe lock in the past:
(&trig->leddev_list_lock){.+.?}-{2:2}
and interrupts could create inverse lock ordering between them.
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&trig->leddev_list_lock);
local_irq_disable();
lock(&host->lock);
lock(&trig->leddev_list_lock);
<Interrupt>
lock(&host->lock);
*** DEADLOCK ***
no locks held by swapper/3/0.
the shortest dependencies between 2nd lock and 1st lock:
-> (&trig->leddev_list_lock){.+.?}-{2:2} ops: 46 {
HARDIRQ-ON-R at:
lock_acquire+0x15f/0x420
_raw_read_lock+0x42/0x90
led_trigger_event+0x2b/0x70
rfkill_global_led_trigger_worker+0x94/0xb0
process_one_work+0x240/0x560
worker_thread+0x58/0x3d0
kthread+0x151/0x170
ret_from_fork+0x1f/0x30
IN-SOFTIRQ-R at:
lock_acquire+0x15f/0x420
_raw_read_lock+0x42/0x90
led_trigger_event+0x2b/0x70
kbd_bh+0x9e/0xc0
tasklet_action_common.constprop.0+0xe9/0x100
tasklet_action+0x22/0x30
__do_softirq+0xcc/0x46d
run_ksoftirqd+0x3f/0x70
smpboot_thread_fn+0x116/0x1f0
kthread+0x151/0x170
ret_from_fork+0x1f/0x30
SOFTIRQ-ON-R at:
lock_acquire+0x15f/0x420
_raw_read_lock+0x42/0x90
led_trigger_event+0x2b/0x70
rfkill_global_led_trigger_worker+0x94/0xb0
process_one_work+0x240/0x560
worker_thread+0x58/0x3d0
kthread+0x151/0x170
ret_from_fork+0x1f/0x30
INITIAL READ USE at:
lock_acquire+0x15f/0x420
_raw_read_lock+0x42/0x90
led_trigger_event+0x2b/0x70
rfkill_global_led_trigger_worker+0x94/0xb0
process_one_work+0x240/0x560
worker_thread+0x58/0x3d0
kthread+0x151/0x170
ret_from_fork+0x1f/0x30
}
... key at: [<ffffffff83da4c00>] __key.0+0x0/0x10
... acquired at:
_raw_read_lock+0x42/0x90
led_trigger_blink_oneshot+0x3b/0x90
ledtrig_disk_activity+0x3c/0xa0
ata_qc_complete+0x26/0x450
ata_do_link_abort+0xa3/0xe0
ata_port_freeze+0x2e/0x40
ata_hsm_qc_complete+0x94/0xa0
ata_sff_hsm_move+0x177/0x7a0
ata_sff_pio_task+0xc7/0x1b0
process_one_work+0x240/0x560
worker_thread+0x58/0x3d0
kthread+0x151/0x170
ret_from_fork+0x1f/0x30
-> (&host->lock){-...}-{2:2} ops: 69 {
IN-HARDIRQ-W at:
lock_acquire+0x15f/0x420
_raw_spin_lock_irqsave+0x52/0xa0
ata_bmdma_interrupt+0x27/0x200
__handle_irq_event_percpu+0xd5/0x2b0
handle_irq_event+0x57/0xb0
handle_edge_irq+0x8c/0x230
asm_call_irq_on_stack+0xf/0x20
common_interrupt+0x100/0x1c0
asm_common_interrupt+0x1e/0x40
native_safe_halt+0xe/0x10
arch_cpu_idle+0x15/0x20
default_idle_call+0x59/0x1c0
do_idle+0x22c/0x2c0
cpu_startup_entry+0x20/0x30
start_secondary+0x11d/0x150
secondary_startup_64_no_verify+0xa6/0xab
INITIAL USE at:
lock_acquire+0x15f/0x420
_raw_spin_lock_irqsave+0x52/0xa0
ata_dev_init+0x54/0xe0
ata_link_init+0x8b/0xd0
ata_port_alloc+0x1f1/0x210
ata_host_alloc+0xf1/0x130
ata_host_alloc_pinfo+0x14/0xb0
ata_pci_sff_prepare_host+0x41/0xa0
ata_pci_bmdma_prepare_host+0x14/0x30
piix_init_one+0x21f/0x600
local_pci_probe+0x48/0x80
pci_device_probe+0x105/0x1c0
really_probe+0x221/0x490
driver_probe_device+0xe9/0x160
device_driver_attach+0xb2/0xc0
__driver_attach+0x91/0x150
bus_for_each_dev+0x81/0xc0
driver_attach+0x1e/0x20
bus_add_driver+0x138/0x1f0
driver_register+0x91/0xf0
__pci_register_driver+0x73/0x80
piix_init+0x1e/0x2e
do_one_initcall+0x5f/0x2d0
kernel_init_freeable+0x26f/0x2cf
kernel_init+0xe/0x113
ret_from_fork+0x1f/0x30
}
... key at: [<ffffffff83d9fdc0>] __key.6+0x0/0x10
... acquired at:
__lock_acquire+0x9da/0x2370
lock_acquire+0x15f/0x420
_raw_spin_lock_irqsave+0x52/0xa0
ata_bmdma_interrupt+0x27/0x200
__handle_irq_event_percpu+0xd5/0x2b0
handle_irq_event+0x57/0xb0
handle_edge_irq+0x8c/0x230
asm_call_irq_on_stack+0xf/0x20
common_interrupt+0x100/0x1c0
asm_common_interrupt+0x1e/0x40
native_safe_halt+0xe/0x10
arch_cpu_idle+0x15/0x20
default_idle_call+0x59/0x1c0
do_idle+0x22c/0x2c0
cpu_startup_entry+0x20/0x30
start_secondary+0x11d/0x150
secondary_startup_64_no_verify+0xa6/0xab
This lockdep splat is reported after:
commit e918188611 ("locking: More accurate annotations for read_lock()")
To clarify:
- read-locks are recursive only in interrupt context (when
in_interrupt() returns true)
- after acquiring host->lock in CPU1, another cpu (i.e. CPU2) may call
write_lock(&trig->leddev_list_lock) that would be blocked by CPU0
that holds trig->leddev_list_lock in read-mode
- when CPU1 (ata_ac_complete()) tries to read-lock
trig->leddev_list_lock, it would be blocked by the write-lock waiter
on CPU2 (because we are not in interrupt context, so the read-lock is
not recursive)
- at this point if an interrupt happens on CPU0 and
ata_bmdma_interrupt() is executed it will try to acquire host->lock,
that is held by CPU1, that is currently blocked by CPU2, so:
* CPU0 blocked by CPU1
* CPU1 blocked by CPU2
* CPU2 blocked by CPU0
*** DEADLOCK ***
The deadlock scenario is better represented by the following schema
(thanks to Boqun Feng <boqun.feng@gmail.com> for the schema and the
detailed explanation of the deadlock condition):
CPU 0: CPU 1: CPU 2:
----- ----- -----
led_trigger_event():
read_lock(&trig->leddev_list_lock);
<workqueue>
ata_hsm_qc_complete():
spin_lock_irqsave(&host->lock);
write_lock(&trig->leddev_list_lock);
ata_port_freeze():
ata_do_link_abort():
ata_qc_complete():
ledtrig_disk_activity():
led_trigger_blink_oneshot():
read_lock(&trig->leddev_list_lock);
// ^ not in in_interrupt() context, so could get blocked by CPU 2
<interrupt>
ata_bmdma_interrupt():
spin_lock_irqsave(&host->lock);
Fix by using read_lock_irqsave/irqrestore() in led_trigger_event(), so
that no interrupt can happen in between, preventing the deadlock
condition.
Apply the same change to led_trigger_blink_setup() as well, since the
same deadlock scenario can also happen in power_supply_update_bat_leds()
-> led_trigger_blink() -> led_trigger_blink_setup() (workqueue context),
and potentially prevent other similar usages.
Link: https://lore.kernel.org/lkml/20201101092614.GB3989@xps-13-7390/
Fixes: eb25cb9956 ("leds: convert IDE trigger to common disk trigger")
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Replace a comma between expression statements by a semicolon.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Reviewed-by: Alexander Dahl <ada@thorsis.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Replace a comma between expression statements by a semicolon.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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Merge tag '5.11-rc5-smb3' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Four cifs patches found in additional testing of the conversion to the
new mount API: three small option processing ones, and one fixing domain
based DFS referrals"
* tag '5.11-rc5-smb3' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix dfs domain referrals
cifs: returning mount parm processing errors correctly
cifs: fix mounts to subdirectories of target
cifs: ignore auto and noauto options if given
Two minor fixes in drivers. Both changing strings (one in a comment,
one in a module help text) with no code impact.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two minor fixes in drivers. Both changing strings (one in a comment,
one in a module help text) with no code impact"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qla2xxx: Fix description for parameter ql2xenforce_iocb_limit
scsi: target: iscsi: Fix typo in comment
- Cleanups on properties with standard unit suffixes
- Fix overwriting dma_range_map if there's no 'dma-ranges' property
- Fix a bug when creating a /chosen node from ARM ATAGs
- Add missing properties for TI j721e USB binding
- Several doc reference updates due to DT schema conversions
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Merge tag 'devicetree-fixes-for-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Cleanups on properties with standard unit suffixes
- Fix overwriting dma_range_map if there's no 'dma-ranges' property
- Fix a bug when creating a /chosen node from ARM ATAGs
- Add missing properties for TI j721e USB binding
- Several doc reference updates due to DT schema conversions
* tag 'devicetree-fixes-for-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: Cleanup standard unit properties
of/device: Update dma_range_map only when dev has valid dma-ranges
ARM: zImage: atags_to_fdt: Fix node names on added root nodes
dt-bindings: usb: j721e: add ranges and dma-coherent props
dt-bindings:iio:adc: update adc.yaml reference
dt-bindings: memory: mediatek: update mediatek,smi-larb.yaml references
dt-bindings: display: mediatek: update mediatek,dpi.yaml reference
ASoC: audio-graph-card: update audio-graph-card.yaml reference
- Fix memory leaks during vfio-ap resources clean up on KVM pointer
invalidation notification.
- Fix potential specification exception by avoiding unnecessary interrupts
disable after queue reset in vfio-ap.
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Merge tag 's390-5.11-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
- Fix max number of VCPUs reported via ultravisor information sysfs
interface.
- Fix memory leaks during vfio-ap resources clean up on KVM pointer
invalidation notification.
- Fix potential specification exception by avoiding unnecessary
interrupts disable after queue reset in vfio-ap.
* tag 's390-5.11-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: uv: Fix sysfs max number of VCPUs reporting
s390/vfio-ap: No need to disable IRQ after queue reset
s390/vfio-ap: clean up vfio_ap resources when KVM pointer invalidated
* A fix to avoid initializing max_mapnr to be too large, which may
manifest on NUMA systems.
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Merge tag 'riscv-for-linus-5.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fix from Palmer Dabbelt:
"A fix to avoid initializing max_mapnr to be too large, which may
manifest on NUMA systems"
* tag 'riscv-for-linus-5.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Fixup pfn_valid error with wrong max_mapnr
- Fix the virt_addr_valid() returning true for < PAGE_OFFSET addresses.
- Do not blindly trust the DMA masks from ACPI/IORT.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Fix the virt_addr_valid() returning true for < PAGE_OFFSET addresses.
- Do not blindly trust the DMA masks from ACPI/IORT.
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
ACPI/IORT: Do not blindly trust DMA masks from firmware
arm64: Fix kernel address detection of __is_lm_address()
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Merge tag 'for-5.11-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"A few more fixes for a late rc:
- fix lockdep complaint on 32bit arches and also remove an unsafe
memory use due to device vs filesystem lifetime
- two fixes for free space tree:
* race during log replay and cache rebuild, now more likely to
happen due to changes in this dev cycle
* possible free space tree corruption with online conversion
during initial tree population"
* tag 'for-5.11-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix log replay failure due to race with space cache rebuild
btrfs: fix lockdep warning due to seqcount_mutex on 32bit arch
btrfs: fix possible free space tree corruption with online conversion
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Merge tag 'block-5.11-2021-01-29' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"All over the place fixes for this release:
- blk-cgroup iteration teardown resched fix (Baolin)
- NVMe pull request from Christoph:
- add another Write Zeroes quirk (Chaitanya Kulkarni)
- handle a no path available corner case (Daniel Wagner)
- use the proper RCU aware list_add helper (Chao Leng)
- bcache regression fix (Coly)
- bdev->bd_size_lock IRQ fix. This will be fixed in drivers for 5.12,
but for now, we'll make it IRQ safe (Damien)
- null_blk zoned init fix (Damien)
- add_partition() error handling fix (Dinghao)
- s390 dasd kobject fix (Jan)
- nbd fix for freezing queue while adding connections (Josef)
- tag queueing regression fix (Ming)
- revert of a patch that inadvertently meant that we regressed write
performance on raid (Maxim)"
* tag 'block-5.11-2021-01-29' of git://git.kernel.dk/linux-block:
null_blk: cleanup zoned mode initialization
nvme-core: use list_add_tail_rcu instead of list_add_tail for nvme_init_ns_head
nvme-multipath: Early exit if no path is available
nvme-pci: add the DISABLE_WRITE_ZEROES quirk for a SPCC device
bcache: only check feature sets when sb->version >= BCACHE_SB_VERSION_CDEV_WITH_FEATURES
block: fix bd_size_lock use
blk-cgroup: Use cond_resched() when destroy blkgs
Revert "block: simplify set_init_blocksize" to regain lost performance
nbd: freeze the queue while we're adding connections
s390/dasd: Fix inconsistent kobject removal
block: Fix an error handling in add_partition
blk-mq: test QUEUE_FLAG_HCTX_ACTIVE for sbitmap_shared in hctx_may_queue
