The qaic driver currently creates and destroys the DRM devices when the qaic device is in an operational state for userspace. This does not match what other DRM drivers do, and leads to a few race conditions that need to be handled. Instead, create the DRM device when the underlying PCIe device is detected and destroy the DRM device when the underlying device disappears. Use KOBJ_ONLINE/OFFLINE udev events to signal to userspace when the underlying device is ready to accept requests, or has entered a reset state. Carl Vanderlip (2): accel/qaic: Increase number of in_reset states accel/qaic: Expand DRM device lifecycle Documentation/accel/qaic/qaic.rst | 9 +++++- drivers/accel/qaic/mhi_controller.c | 2 +- drivers/accel/qaic/qaic.h | 15 +++++++-- drivers/accel/qaic/qaic_control.c | 5 +-- drivers/accel/qaic/qaic_data.c | 16 ++++----- drivers/accel/qaic/qaic_drv.c | 50 ++++++++++++----------------- 6 files changed, 52 insertions(+), 45 deletions(-) -- 2.40.1
