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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Johan Hovold <johan@kernel.org>,
	Peter Ujfalusi <peter.ujfalusi@ti.com>,
	Lee Jones <lee.jones@linaro.org>
Subject: [PATCH 4.4 05/63] mfd: twl6040: Fix child-node lookup
Date: Mon,  1 Jan 2018 15:24:23 +0100	[thread overview]
Message-ID: <20180101140043.397735622@linuxfoundation.org> (raw)
In-Reply-To: <20180101140042.456380281@linuxfoundation.org>

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <johan@kernel.org>

commit 85e9b13cbb130a3209f21bd7933933399c389ffe upstream.

Fix child-node lookup during probe, which ended up searching the whole
device tree depth-first starting at the parent rather than just matching
on its children.

To make things worse, the parent node was prematurely freed, while the
child node was leaked.

Note that the CONFIG_OF compile guard can be removed as
of_get_child_by_name() provides a !CONFIG_OF implementation which always
fails.

Fixes: 37e13cecaa14 ("mfd: Add support for Device Tree to twl6040")
Fixes: ca2cad6ae38e ("mfd: Fix twl6040 build failure")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/mfd/twl6040.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

--- a/drivers/mfd/twl6040.c
+++ b/drivers/mfd/twl6040.c
@@ -97,12 +97,16 @@ static struct reg_sequence twl6040_patch
 };
 
 
-static bool twl6040_has_vibra(struct device_node *node)
+static bool twl6040_has_vibra(struct device_node *parent)
 {
-#ifdef CONFIG_OF
-	if (of_find_node_by_name(node, "vibra"))
+	struct device_node *node;
+
+	node = of_get_child_by_name(parent, "vibra");
+	if (node) {
+		of_node_put(node);
 		return true;
-#endif
+	}
+
 	return false;
 }
 

  parent reply	other threads:[~2018-01-01 14:26 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-01 14:24 [PATCH 4.4 00/63] 4.4.109-stable review Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 01/63] ACPI: APEI / ERST: Fix missing error handling in erst_reader() Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 02/63] crypto: mcryptd - protect the per-CPU queue with a lock Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 03/63] mfd: cros ec: spi: Dont send first message too soon Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 04/63] mfd: twl4030-audio: Fix sibling-node lookup Greg Kroah-Hartman
2018-01-01 14:24 ` Greg Kroah-Hartman [this message]
2018-01-01 14:24 ` [PATCH 4.4 06/63] ALSA: rawmidi: Avoid racy info ioctl via ctl device Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 07/63] ALSA: usb-audio: Fix the missing ctl name suffix at parsing SU Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 08/63] PCI / PM: Force devices to D0 in pci_pm_thaw_noirq() Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 09/63] parisc: Hide Diva-built-in serial aux and graphics card Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 10/63] spi: xilinx: Detect stall with Unknown commands Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 11/63] KVM: X86: Fix load RFLAGS w/o the fixed bit Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 12/63] kvm: x86: fix RSM when PCID is non-zero Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 13/63] powerpc/perf: Dereference BHRB entries safely Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 14/63] net: mvneta: clear interface link status on port disable Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 15/63] tracing: Remove extra zeroing out of the ring buffer page Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 16/63] tracing: Fix possible double free on failure of allocating trace buffer Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 17/63] tracing: Fix crash when it fails to alloc ring buffer Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 18/63] ring-buffer: Mask out the info bits when returning buffer page length Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 19/63] iw_cxgb4: Only validate the MSN for successful completions Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 20/63] ASoC: fsl_ssi: AC97 ops need regmap, clock and cleaning up on failure Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 21/63] ASoC: twl4030: fix child-node lookup Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 22/63] ALSA: hda: Drop useless WARN_ON() Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 23/63] ALSA: hda - fix headset mic detection issue on a Dell machine Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 24/63] x86/vm86/32: Switch to flush_tlb_mm_range() in mark_screen_rdonly() Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 25/63] x86/mm: Remove flush_tlb() and flush_tlb_current_task() Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 26/63] x86/mm: Make flush_tlb_mm_range() more predictable Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 27/63] x86/mm: Reimplement flush_tlb_page() using flush_tlb_mm_range() Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 28/63] x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 29/63] x86/mm: Disable PCID on 32-bit kernels Greg Kroah-Hartman
2018-01-09 16:05   ` David Woodhouse
2018-01-09 18:18     ` David Woodhouse
2018-01-01 14:24 ` [PATCH 4.4 30/63] x86/mm: Add the nopcid boot option to turn off PCID Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 31/63] x86/mm: Enable CR4.PCIDE on supported systems Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 32/63] x86/mm/64: Fix reboot interaction with CR4.PCIDE Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 33/63] kbuild: add -fno-stack-check to kernel build options Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 34/63] ipv4: igmp: guard against silly MTU values Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 35/63] ipv6: mcast: better catch silly mtu values Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 36/63] net: igmp: Use correct source address on IGMPv3 reports Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 37/63] netlink: Add netns check on taps Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 38/63] net: qmi_wwan: add Sierra EM7565 1199:9091 Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 39/63] net: reevalulate autoflowlabel setting after sysctl setting Greg Kroah-Hartman
2018-01-21 23:05   ` Ben Hutchings
2018-01-01 14:24 ` [PATCH 4.4 40/63] tcp md5sig: Use skbs saddr when replying to an incoming segment Greg Kroah-Hartman
2018-01-01 14:24 ` [PATCH 4.4 41/63] tg3: Fix rx hang on MTU change with 5717/5719 Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 42/63] net: ipv4: fix for a race condition in raw_sendmsg Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 43/63] net: mvmdio: disable/unprepare clocks in EPROBE_DEFER case Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 44/63] sctp: Replace use of sockets_allocated with specified macro Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 45/63] ipv4: Fix use-after-free when flushing FIB tables Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 46/63] net: bridge: fix early call to br_stp_change_bridge_id and plug newlink leaks Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 47/63] net: Fix double free and memory corruption in get_net_ns_by_id() Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 48/63] net: phy: micrel: ksz9031: reconfigure autoneg after phy autoneg workaround Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 49/63] sock: free skb in skb_complete_tx_timestamp on error Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 50/63] usbip: fix usbip bind writing random string after command in match_busid Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 51/63] usbip: stub: stop printing kernel pointer addresses in messages Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 52/63] usbip: vhci: " Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 53/63] USB: serial: ftdi_sio: add id for Airbus DS P8GR Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 54/63] USB: serial: qcserial: add Sierra Wireless EM7565 Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 55/63] USB: serial: option: add support for Telit ME910 PID 0x1101 Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 56/63] USB: serial: option: adding support for YUGA CLM920-NC5 Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 57/63] usb: Add device quirk for Logitech HD Pro Webcam C925e Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 58/63] usb: add RESET_RESUME for ELSA MicroLink 56K Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 59/63] USB: Fix off by one in type-specific length check of BOS SSP capability Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 60/63] usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201 Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 61/63] nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick() Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 62/63] x86/smpboot: Remove stale TLB flush invocations Greg Kroah-Hartman
2018-01-01 14:25 ` [PATCH 4.4 63/63] n_tty: fix EXTPROC vs ICANON interaction with TIOCINQ (aka FIONREAD) Greg Kroah-Hartman
2018-01-01 17:29 ` [PATCH 4.4 00/63] 4.4.109-stable review Nathan Chancellor
2018-01-01 20:16   ` Greg Kroah-Hartman
2018-01-01 19:07 ` kernelci.org bot
2018-01-01 19:26 ` Naresh Kamboju
2018-01-02 16:46 ` Guenter Roeck
2018-01-02 22:26 ` Shuah Khan

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