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Yang Yingliang f2d63cefc0 mailbox: zynq-ipi: fix error handling while device_register() fails 
[ Upstream commit a6792a0cde ]

If device_register() fails, it has two issues:
1. The name allocated by dev_set_name() is leaked.
2. The parent of device is not NULL, device_unregister() is called
   in zynqmp_ipi_free_mboxes(), it will lead a kernel crash because
   of removing not added device.

Call put_device() to give up the reference, so the name is freed in
kobject_cleanup(). Add device registered check in zynqmp_ipi_free_mboxes()
to avoid null-ptr-deref.

Fixes: 4981b82ba2 ("mailbox: ZynqMP IPI mailbox controller")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2022-12-31 13:26:39 +01:00
..
Kconfig mailbox: mediatek: add support for adsp mailbox controller 2022-03-12 19:24:57 -06:00
Makefile mailbox: mediatek: add support for adsp mailbox controller 2022-03-12 19:24:57 -06:00
apple-mailbox.c mailbox: apple: Bind to generic compatibles 2022-01-11 23:47:32 -06:00
arm_mhu.c mailbox: arm_mhu: Remove redundant error printing in mhu_probe() 2021-06-26 11:37:48 -05:00
arm_mhu_db.c mailbox: correct kerneldoc 2022-05-21 11:41:30 -05:00
arm_mhuv2.c mailbox: arm_mhuv2: Fix return value check in mhuv2_probe() 2022-12-31 13:26:39 +01:00
armada-37xx-rwtm-mailbox.c treewide: change my e-mail address, fix my name 2021-04-09 14:54:23 -07:00
bcm-flexrm-mailbox.c mailbox: bcm-ferxrm-mailbox: Fix error check for dma_map_sg 2022-10-21 12:38:55 +02:00
bcm-pdc-mailbox.c mailbox: bcm-pdc: Remove redundant error printing in pdc_probe() 2021-06-26 11:37:50 -05:00
bcm2835-mailbox.c mailbox: bcm2835: Make use of the helper function devm_platform_ioremap_resource() 2021-10-16 14:39:48 -05:00
hi3660-mailbox.c mailbox: hi3660: convert struct comments to kernel-doc notation 2022-01-11 23:47:32 -06:00
hi6220-mailbox.c mailbox: hi6220: Make use of the helper function devm_platform_ioremap_resource() 2021-10-16 14:39:49 -05:00
imx-mailbox.c mailbox: imx: fix RST channel support 2022-10-21 12:38:55 +02:00
mailbox-altera.c mailbox: altera: Make use of the helper function devm_platform_ioremap_resource() 2021-10-16 14:39:48 -05:00
mailbox-mpfs.c mailbox: mpfs: read the system controller's status 2022-12-31 13:26:39 +01:00
mailbox-sti.c mailbox: sti: Make use of the helper function devm_platform_ioremap_resource() 2021-10-16 14:39:49 -05:00
mailbox-test.c
…
mailbox-xgene-slimpro.c mailbox: xgene-slimpro: Make use of the helper function devm_platform_ioremap_resource() 2021-10-16 14:39:49 -05:00
mailbox.c mailbox: forward the hrtimer if not queued and under a lock 2022-05-23 14:45:24 -05:00
mailbox.h mailbox: fix various typos in comments 2021-04-13 20:07:35 -05:00
mtk-adsp-mailbox.c mailbox: mediatek: support mt8186 adsp mailbox 2022-05-21 11:41:30 -05:00
mtk-cmdq-mailbox.c mailbox: mtk-cmdq: Remove proprietary cmdq_task_cb 2022-08-02 15:06:57 -05:00
omap-mailbox.c mailbox: omap: using pm_runtime_resume_and_get to simplify the code 2022-05-21 11:41:30 -05:00
pcc.c mailbox: pcc: Reset pcc_chan_count to zero in case of PCC probe failure 2022-12-31 13:25:43 +01:00
pl320-ipc.c mailbox: fix various typos in comments 2021-04-13 20:07:35 -05:00
platform_mhu.c mailbox: platform-mhu: Make use of the helper function devm_platform_ioremap_resource() 2021-10-16 14:39:49 -05:00
qcom-apcs-ipc-mailbox.c mailbox: qcom-apcs-ipc: Add compatible for MSM8976 SoC 2022-03-12 19:22:11 -06:00
qcom-ipcc.c mailbox: qcom-ipcc: Fix -Wunused-function with CONFIG_PM_SLEEP=n 2022-05-24 08:08:24 -05:00
rockchip-mailbox.c
…
sprd-mailbox.c mailbox: sprd: Add supplementary inbox support 2021-04-13 20:07:36 -05:00
stm32-ipcc.c mailbox: stm32-ipcc: Make use of the helper function devm_platform_ioremap_resource() 2021-10-16 14:39:49 -05:00
sun6i-msgbox.c mailbox: sun6i: Make use of the helper function devm_platform_ioremap_resource() 2021-10-16 14:39:49 -05:00
tegra-hsp.c mailbox: tegra-hsp: Add 128-bit shared mailbox support 2022-05-21 11:41:30 -05:00
ti-msgmgr.c mailbox: ti-msgmgr: Operate mailbox in polled mode during system suspend 2022-03-12 19:33:30 -06:00
zynqmp-ipi-mailbox.c mailbox: zynq-ipi: fix error handling while device_register() fails 2022-12-31 13:26:39 +01:00