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Platform drivers now have the option to have the platform core create
and remove any needed sysfs attribute files. So take advantage of that
and do not register "by hand" any sysfs files.
Cc: Valentina Manea <valentina.manea.m@gmail.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20190805193636.25560-5-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In rmmod path, usbip_vudc does platform_device_put() twice once from
platform_device_unregister() and then from put_vudc_device().
The second put results in:
BUG kmalloc-2048 (Not tainted): Poison overwritten error or
BUG: KASAN: use-after-free in kobject_put+0x1e/0x230 if KASAN is
enabled.
[ 169.042156] calling init+0x0/0x1000 [usbip_vudc] @ 1697
[ 169.042396] =============================================================================
[ 169.043678] probe of usbip-vudc.0 returned 1 after 350 usecs
[ 169.044508] BUG kmalloc-2048 (Not tainted): Poison overwritten
[ 169.044509] -----------------------------------------------------------------------------
...
[ 169.057849] INFO: Freed in device_release+0x2b/0x80 age=4223 cpu=3 pid=1693
[ 169.057852] kobject_put+0x86/0x1b0
[ 169.057853] 0xffffffffc0c30a96
[ 169.057855] __x64_sys_delete_module+0x157/0x240
Fix it to call platform_device_del() instead and let put_vudc_device() do
the platform_device_put().
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner. So the extra GPL text wording
can be removed as it is no longer needed at all.
This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text. And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.
No copyright headers or other non-license-description text was removed.
Cc: Valentina Manea <valentina.manea.m@gmail.com>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.
Update the drivers/usb/ and include/linux/usb* files with the correct
SPDX license identifier based on the license text in the file itself.
The SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.
This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add main vudc module file. This allows us to register suitable
platform device and driver (just like dummy_hcd does).
Currently number of vudc instances is determined using module
parameter but whole infrastructure is suitable to make vudc
creation dynamic (for example via configfs).
This commit is a result of cooperation between Samsung R&D Institute
Poland and Open Operating Systems Student Society at University
of Warsaw (O2S3@UW) consisting of:
Igor Kotrasinski <ikotrasinsk@gmail.com>
Karol Kosik <karo9@interia.eu>
Ewelina Kosmider <3w3lfin@gmail.com>
Dawid Lazarczyk <lazarczyk.dawid@gmail.com>
Piotr Szulc <ps347277@students.mimuw.edu.pl>
Tutor and project owner:
Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Igor Kotrasinski <i.kotrasinsk@samsung.com>
Signed-off-by: Karol Kosik <karo9@interia.eu>
[Various bug fixes and commit message update]
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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