From: Matthew Auld matthew.auld@intel.com
[ Upstream commit a0b834c8957a7d2848face008a12382a0ad11ffc ]
Not valid to touch mmio once the device is removed, so make sure we unmap on removal and not just when driver instance goes away. Also set the mmio pointers to NULL to hopefully catch such issues more easily.
Signed-off-by: Matthew Auld matthew.auld@intel.com Cc: Andrzej Hajda andrzej.hajda@intel.com Cc: Rodrigo Vivi rodrigo.vivi@intel.com Reviewed-by: Andrzej Hajda andrzej.hajda@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20240522102143.128069-32-matth... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/xe/xe_mmio.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_mmio.c b/drivers/gpu/drm/xe/xe_mmio.c index 334637511e750..2ebb2f0d6874e 100644 --- a/drivers/gpu/drm/xe/xe_mmio.c +++ b/drivers/gpu/drm/xe/xe_mmio.c @@ -386,13 +386,16 @@ void xe_mmio_probe_tiles(struct xe_device *xe) } }
-static void mmio_fini(struct drm_device *drm, void *arg) +static void mmio_fini(void *arg) { struct xe_device *xe = arg;
pci_iounmap(to_pci_dev(xe->drm.dev), xe->mmio.regs); if (xe->mem.vram.mapping) iounmap(xe->mem.vram.mapping); + + xe->mem.vram.mapping = NULL; + xe->mmio.regs = NULL; }
int xe_mmio_init(struct xe_device *xe) @@ -417,7 +420,7 @@ int xe_mmio_init(struct xe_device *xe) root_tile->mmio.size = SZ_16M; root_tile->mmio.regs = xe->mmio.regs;
- return drmm_add_action_or_reset(&xe->drm, mmio_fini, xe); + return devm_add_action_or_reset(xe->drm.dev, mmio_fini, xe); }
u8 xe_mmio_read8(struct xe_gt *gt, struct xe_reg reg)