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From: Sasha Levin <sashal@kernel.org>
To: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Jonathan Cameron <jic23@kernel.org>,
	Denis Ciocca <denis.ciocca@st.com>,
	linus.walleij@linaro.org, lars@metafoo.de,
	andy.shevchenko@gmail.com, aardelean@deviqon.com,
	cai.huoqing@linux.dev, linux-iio@vger.kernel.org
Subject: Re: [PATCH AUTOSEL 5.18 03/68] iio: st_sensors: Add a local lock for protecting odr
Date: Thu, 9 Jun 2022 09:56:21 -0400	[thread overview]
Message-ID: <YqH8BTZ240DeZ9fq@sashalap> (raw)
In-Reply-To: <20220608102651.000035b0@Huawei.com>

On Wed, Jun 08, 2022 at 10:26:51AM +0100, Jonathan Cameron wrote:
>On Tue,  7 Jun 2022 13:47:29 -0400
>Sasha Levin <sashal@kernel.org> wrote:
>
>> From: Miquel Raynal <miquel.raynal@bootlin.com>
>>
>> [ Upstream commit 474010127e2505fc463236470908e1ff5ddb3578 ]
>>
>> Right now the (framework) mlock lock is (ab)used for multiple purposes:
>> 1- protecting concurrent accesses over the odr local cache
>> 2- avoid changing samplig frequency whilst buffer is running
>>
>> Let's start by handling situation #1 with a local lock.
>>
>> Suggested-by: Jonathan Cameron <jic23@kernel.org>
>> Cc: Denis Ciocca <denis.ciocca@st.com>
>> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
>> Link: https://lore.kernel.org/r/20220207143840.707510-7-miquel.raynal@bootlin.com
>> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
>> Signed-off-by: Sasha Levin <sashal@kernel.org>
>
>Hi Sasha,
>
>This one is a cleanup rather than a fix. It's part of a long term move to stop
>drivers using an internal lock (which works, but limits our ability to
>change the core code).  No problem backporting it if it makes
>taking some other fix easier, but I'm not immediately seeing such a patch.

Yup, it's not a dependency. I'll drop it.

-- 
Thanks,
Sasha

  reply	other threads:[~2022-06-09 13:56 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-07 17:47 [PATCH AUTOSEL 5.18 01/68] iio: dummy: iio_simple_dummy: check the return value of kstrdup() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 02/68] staging: rtl8712: fix a potential memory leak in r871xu_drv_init() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 03/68] iio: st_sensors: Add a local lock for protecting odr Sasha Levin
2022-06-08  9:26   ` Jonathan Cameron
2022-06-09 13:56     ` Sasha Levin [this message]
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 04/68] lkdtm/usercopy: Expand size of "out of frame" object Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 05/68] drivers: staging: rtl8723bs: Fix deadlock in rtw_surveydone_event_callback() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 06/68] drivers: staging: rtl8192bs: Fix deadlock in rtw_joinbss_event_prehandle() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 07/68] drivers: staging: rtl8192eu: Fix deadlock in rtw_joinbss_event_prehandle Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 08/68] tty: synclink_gt: Fix null-pointer-dereference in slgt_clean() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 09/68] tty: Fix a possible resource leak in icom_probe Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 10/68] thunderbolt: Use different lane for second DisplayPort tunnel Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 11/68] drivers: staging: rtl8192u: Fix deadlock in ieee80211_beacons_stop() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 12/68] drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 13/68] USB: host: isp116x: check return value after calling platform_get_resource() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 14/68] drivers: tty: serial: Fix deadlock in sa1100_set_termios() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 15/68] drivers: usb: host: Fix deadlock in oxu_bus_suspend() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 16/68] USB: hcd-pci: Fully suspend across freeze/thaw cycle Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 17/68] char: xillybus: fix a refcount leak in cleanup_dev() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 18/68] sysrq: do not omit current cpu when showing backtrace of all active CPUs Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 19/68] usb: dwc2: gadget: don't reset gadget's driver->bus Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 20/68] usb: dwc3: host: Stop setting the ACPI companion Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 21/68] usb: dwc3: gadget: Only End Transfer for ep0 data phase Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 22/68] soundwire: qcom: adjust autoenumeration timeout Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 23/68] misc: rtsx: set NULL intfdata when probe fails Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 24/68] extcon: Fix extcon_get_extcon_dev() error handling Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 25/68] extcon: Modify extcon device to be created after driver data is set Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 26/68] clocksource/drivers/sp804: Avoid error on multiple instances Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 27/68] staging: rtl8723bs: Fix alignment to match open parenthesis Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 28/68] staging: rtl8712: fix uninit-value in usb_read8() and friends Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 29/68] staging: rtl8712: fix uninit-value in r871xu_drv_init() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 30/68] serial: msm_serial: disable interrupts in __msm_console_write() Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 31/68] accessiblity: speakup: Add missing misc_deregister in softsynth_probe Sasha Levin
2022-06-09 12:28   ` Samuel Thibault
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 32/68] kernfs: Separate kernfs_pr_cont_buf and rename_lock Sasha Levin
2022-06-07 17:47 ` [PATCH AUTOSEL 5.18 33/68] watchdog: wdat_wdt: Stop watchdog when rebooting the system Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 34/68] ksmbd: smbd: fix connection dropped issue Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 35/68] md: don't unregister sync_thread with reconfig_mutex held Sasha Levin
2022-06-08  8:43   ` [dm-devel] " Guoqing Jiang
2022-06-12 17:53     ` Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 36/68] md: protect md_unregister_thread from reentrancy Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 37/68] ASoC: SOF: amd: Fixed Build error Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 38/68] scsi: myrb: Fix up null pointer access on myrb_cleanup() Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 39/68] ASoC: rt5640: Do not manipulate pin "Platform Clock" if the "Platform Clock" is not in the DAPM Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 40/68] Revert "net: af_key: add check for pfkey_broadcast in function pfkey_process" Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 41/68] ceph: allow ceph.dir.rctime xattr to be updatable Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 42/68] ceph: flush the mdlog for filesystem sync Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 43/68] ceph: fix possible deadlock when holding Fwb to get inline_data Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 44/68] net, neigh: Set lower cap for neigh_managed_work rearming Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 45/68] drm/amd/display: Check if modulo is 0 before dividing Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 46/68] drm/amd/display: Check zero planes for OTG disable W/A on clock change Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 47/68] drm/radeon: fix a possible null pointer dereference Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 48/68] drm/amd/pm: fix a potential gpu_metrics_table memory leak Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 49/68] drm/amd/pm: Fix missing thermal throttler status Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 50/68] drm/amd/pm: correct the metrics version for SMU 11.0.11/12/13 Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 51/68] um: line: Use separate IRQs per line Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 52/68] modpost: fix undefined behavior of is_arm_mapping_symbol() Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 53/68] objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 54/68] x86/cpu: Elide KCSAN for cpu_has() and friends Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 55/68] jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 56/68] nbd: call genl_unregister_family() first in nbd_cleanup() Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 57/68] nbd: fix race between nbd_alloc_config() and module removal Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 58/68] nbd: fix io hung while disconnecting device Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 59/68] fs/ntfs3: Fix invalid free in log_replay Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 60/68] Revert "PCI: brcmstb: Do not turn off WOL regulators on suspend" Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 61/68] Revert "PCI: brcmstb: Add control of subdevice voltage regulators" Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 62/68] Revert "PCI: brcmstb: Add mechanism to turn on subdev regulators" Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 63/68] Revert "PCI: brcmstb: Split brcm_pcie_setup() into two funcs" Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 64/68] cifs: fix potential deadlock in direct reclaim Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 65/68] s390/gmap: voluntarily schedule during key setting Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 66/68] cifs: version operations for smb20 unneeded when legacy support disabled Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 67/68] drm/amd/pm: use bitmap_{from,to}_arr32 where appropriate Sasha Levin
2022-06-07 17:48 ` [PATCH AUTOSEL 5.18 68/68] nodemask: Fix return values to be unsigned Sasha Levin

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