From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Linus Walleij <linus.walleij@linaro.org>,
Guenter Roeck <linux@roeck-us.net>
Subject: [PATCH 4.14 18/46] hwmon: Deal with errors from the thermal subsystem
Date: Tue, 28 Jan 2020 14:57:52 +0100 [thread overview]
Message-ID: <20200128135752.300771628@linuxfoundation.org> (raw)
In-Reply-To: <20200128135749.822297911@linuxfoundation.org>
From: Linus Walleij <linus.walleij@linaro.org>
commit 47c332deb8e89f6c59b0bb2615945c6e7fad1a60 upstream.
If the thermal subsystem returne -EPROBE_DEFER or any other error
when hwmon calls devm_thermal_zone_of_sensor_register(), this is
silently ignored.
I ran into this with an incorrectly defined thermal zone, making
it non-existing and thus this call failed with -EPROBE_DEFER
assuming it would appear later. The sensor was still added
which is incorrect: sensors must strictly be added after the
thermal zones, so deferred probe must be respected.
Fixes: d560168b5d0f ("hwmon: (core) New hwmon registration API")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/hwmon/hwmon.c | 21 +++++++++++++++++----
1 file changed, 17 insertions(+), 4 deletions(-)
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -143,6 +143,7 @@ static int hwmon_thermal_add_sensor(stru
struct hwmon_device *hwdev, int index)
{
struct hwmon_thermal_data *tdata;
+ struct thermal_zone_device *tzd;
tdata = devm_kzalloc(dev, sizeof(*tdata), GFP_KERNEL);
if (!tdata)
@@ -151,8 +152,14 @@ static int hwmon_thermal_add_sensor(stru
tdata->hwdev = hwdev;
tdata->index = index;
- devm_thermal_zone_of_sensor_register(&hwdev->dev, index, tdata,
- &hwmon_thermal_ops);
+ tzd = devm_thermal_zone_of_sensor_register(&hwdev->dev, index, tdata,
+ &hwmon_thermal_ops);
+ /*
+ * If CONFIG_THERMAL_OF is disabled, this returns -ENODEV,
+ * so ignore that error but forward any other error.
+ */
+ if (IS_ERR(tzd) && (PTR_ERR(tzd) != -ENODEV))
+ return PTR_ERR(tzd);
return 0;
}
@@ -621,14 +628,20 @@ __hwmon_device_register(struct device *d
if (!chip->ops->is_visible(drvdata, hwmon_temp,
hwmon_temp_input, j))
continue;
- if (info[i]->config[j] & HWMON_T_INPUT)
- hwmon_thermal_add_sensor(dev, hwdev, j);
+ if (info[i]->config[j] & HWMON_T_INPUT) {
+ err = hwmon_thermal_add_sensor(dev,
+ hwdev, j);
+ if (err)
+ goto free_device;
+ }
}
}
}
return hdev;
+free_device:
+ device_unregister(hdev);
free_hwmon:
kfree(hwdev);
ida_remove:
next prev parent reply other threads:[~2020-01-28 14:50 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-28 13:57 [PATCH 4.14 00/46] 4.14.169-stable review Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 01/46] can, slip: Protect tty->disc_data in write_wakeup and close with RCU Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 02/46] firestream: fix memory leaks Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 03/46] gtp: make sure only SOCK_DGRAM UDP sockets are accepted Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 04/46] ipv6: sr: remove SKB_GSO_IPXIP6 on End.D* actions Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 05/46] net: cxgb3_main: Add CAP_NET_ADMIN check to CHELSIO_GET_MEM Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 06/46] net, ip6_tunnel: fix namespaces move Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 07/46] net, ip_tunnel: " Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 08/46] net_sched: fix datalen for ematch Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 09/46] net-sysfs: Fix reference count leak in rx|netdev_queue_add_kobject Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 10/46] net-sysfs: fix netdev_queue_add_kobject() breakage Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 11/46] net-sysfs: Call dev_hold always in netdev_queue_add_kobject Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 12/46] net-sysfs: Call dev_hold always in rx_queue_add_kobject Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 13/46] net-sysfs: Fix reference count leak Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 14/46] net: usb: lan78xx: Add .ndo_features_check Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 15/46] tcp_bbr: improve arithmetic division in bbr_update_bw() Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 16/46] net: rtnetlink: validate IFLA_MTU attribute in rtnl_create_link() Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 17/46] hwmon: (adt7475) Make volt2reg return same reg as reg2volt input Greg Kroah-Hartman
2020-01-28 13:57 ` Greg Kroah-Hartman [this message]
2020-01-28 13:57 ` [PATCH 4.14 19/46] hwmon: (core) Fix double-free in __hwmon_device_register() Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 20/46] hwmon: (core) Do not use device managed functions for memory allocations Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 21/46] Input: keyspan-remote - fix control-message timeouts Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 22/46] Revert "Input: synaptics-rmi4 - dont increment rmiaddr for SMBus transfers" Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 23/46] ARM: 8950/1: ftrace/recordmcount: filter relocation types Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 24/46] mmc: tegra: fix SDR50 tuning override Greg Kroah-Hartman
2020-01-28 13:57 ` [PATCH 4.14 25/46] mmc: sdhci: fix minimum clock rate for v3 controller Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 26/46] Documentation: Document arm64 kpti control Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 27/46] Input: pm8xxx-vib - fix handling of separate enable register Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 28/46] Input: sur40 - fix interface sanity checks Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 29/46] Input: gtco - fix endpoint sanity check Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 30/46] Input: aiptek " Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 31/46] Input: pegasus_notetaker " Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 32/46] Input: sun4i-ts - add a check for devm_thermal_zone_of_sensor_register Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 33/46] hwmon: (nct7802) Fix voltage limits to wrong registers Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 34/46] scsi: RDMA/isert: Fix a recently introduced regression related to logout Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 35/46] tracing: xen: Ordered comparison of function pointers Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 36/46] do_last(): fetch directory ->i_mode and ->i_uid before its too late Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 37/46] sd: Fix REQ_OP_ZONE_REPORT completion handling Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 38/46] coresight: etb10: Do not call smp_processor_id from preemptible Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 39/46] coresight: tmc-etf: " Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 40/46] libertas: Fix two buffer overflows at parsing bss descriptor Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 41/46] media: v4l2-ioctl.c: zero reserved fields for S/TRY_FMT Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 42/46] scsi: iscsi: Avoid potential deadlock in iscsi_if_rx func Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 43/46] md: Avoid namespace collision with bitmap API Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 44/46] bitmap: Add bitmap_alloc(), bitmap_zalloc() and bitmap_free() Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 45/46] netfilter: ipset: use bitmap infrastructure completely Greg Kroah-Hartman
2020-01-28 13:58 ` [PATCH 4.14 46/46] net/x25: fix nonblocking connect Greg Kroah-Hartman
2020-01-28 23:05 ` [PATCH 4.14 00/46] 4.14.169-stable review shuah
2020-01-29 4:53 ` Naresh Kamboju
2020-01-29 13:13 ` Jon Hunter
2020-01-29 14:42 ` Guenter Roeck
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