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| author | Thomas Pugliese <thomas.pugliese@gmail.com> | 2013-08-09 16:25:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-13 00:41:08 +0200 |
| commit | c654ecbbfefbeec8fbf202e117364bff48ecaea3 (patch) | |
| tree | 262c335c73b088ef1851c926f7bfe5f95f8cf33c /drivers/uio/uio_sercos3.c | |
| parent | USB: cdc-wdm: fix race between interrupt handler and tasklet (diff) | |
| download | linux-c654ecbbfefbeec8fbf202e117364bff48ecaea3.tar.xz linux-c654ecbbfefbeec8fbf202e117364bff48ecaea3.zip | |
HWA RC: fix a kernel panic when unplugging the HWA dongle
This patch fixes a kernel panic that can occur when unplugging the HWA
dongle while a downstream device is in the process of disconnecting.
This involved 2 changes. First, call usb_lock_device_for_reset before
usb_reset_device to synchronize the HWA's post_rest and disconnect
routines. Second, set the hwarc->neep_urb and hwarc->rd_buffer to NULL
when they are freed in the error path in the post_reset routine. This
prevents a double free when the disconnect routine is called and attempts
to free those resources again.
Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/uio/uio_sercos3.c')
0 files changed, 0 insertions, 0 deletions