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| author | Serge Semin <fancer.lancer@gmail.com> | 2019-04-27 12:06:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-27 14:46:27 +0200 |
| commit | 95e060e68bd98f28763adbc311797eebc4d31e0c (patch) | |
| tree | 436b0f8d6298c13bf6dd2ec86cb74a2c257cc243 /tools/perf/scripts/python/stackcollapse.py | |
| parent | a4d6a2989dc3f2f2bcd25ca53dd187a1de68ffac (diff) | |
usb: usb251xb: Add an empty hub' i2c-bus segment checker
It's pointless to scan the hub' i2c-bus segment if GPIOs aren't supported
by the system, since no GPIO-driven reset could be cleared by the driver
then. Moreover if CONFIG_GPIOLIB is disabled the gpio_chip structure
definition won't be available, which causes the incomplete type pointer
dereference compilation error. In order to fix this we need to create an
empty usb251x_check_gpio_chip() method returning zero, so the driver would
skip the i2c-bus segment checking and proceed with further probing in this
case.
Fixes: 6e3c8beb4f92 ("usb: usb251xb: Lock i2c-bus segment the hub resides")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions