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authorXu Yang <xu.yang_2@nxp.com>2024-11-26 11:28:41 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-12-04 16:26:30 +0100
commita4faee01179a4d9cbad9ba6be2da8637c68c1438 (patch)
tree724bcb50ef8b8c8b0342bac8bb036be450289df2 /tools/perf/scripts/python/stackcollapse.py
parentef42b906df5c57d0719b69419df9dfd25f25c161 (diff)
usb: dwc3: imx8mp: fix software node kernel dump
When unbind and bind the device again, kernel will dump below warning: [ 173.972130] sysfs: cannot create duplicate filename '/devices/platform/soc/4c010010.usb/software_node' [ 173.981564] CPU: 2 UID: 0 PID: 536 Comm: sh Not tainted 6.12.0-rc6-06344-g2aed7c4a5c56 #144 [ 173.989923] Hardware name: NXP i.MX95 15X15 board (DT) [ 173.995062] Call trace: [ 173.997509] dump_backtrace+0x90/0xe8 [ 174.001196] show_stack+0x18/0x24 [ 174.004524] dump_stack_lvl+0x74/0x8c [ 174.008198] dump_stack+0x18/0x24 [ 174.011526] sysfs_warn_dup+0x64/0x80 [ 174.015201] sysfs_do_create_link_sd+0xf0/0xf8 [ 174.019656] sysfs_create_link+0x20/0x40 [ 174.023590] software_node_notify+0x90/0x100 [ 174.027872] device_create_managed_software_node+0xec/0x108 ... The '4c010010.usb' device is a platform device created during the initcall and is never removed, which causes its associated software node to persist indefinitely. The existing device_create_managed_software_node() does not provide a corresponding removal function. Replace device_create_managed_software_node() with the device_add_software_node() and device_remove_software_node() pair to ensure proper addition and removal of software nodes, addressing this issue. Fixes: a9400f1979a0 ("usb: dwc3: imx8mp: add 2 software managed quirk properties for host mode") Cc: stable@vger.kernel.org Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Xu Yang <xu.yang_2@nxp.com> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/20241126032841.2458338-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
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