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This makes it possible to see the reason why the
setup fails. It also adheres to code style of
error checking in ath drivers.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Handle pci_alloc_consistent(), kmalloc()
errors in copy engine module.
Found during code review.
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Since the firmware support is no longer available for hw1.0,
drop all code (especially workarounds) for those units.
Signed-off-by: Bartosz Markowski <bartosz.markowski@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
If the device is removed and hotplug fails
ioread32() will return 0xFFFFFFFF. In that case
reading ringbuffer during device bringup led to
out-of-bounds addressing of a ringbuffer array
that in turn led to a paging failure.
This could be reproduced by the following:
* boot without acpi/prevent hotplug from working
* insert and manually detect (pci rescan) the device
* remove the device physically
* load ath10k driver
* kernel crashed
Ringbuffer index reading is now protected by using
an appropriate mask to prevent addressing an
invalid array index.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
