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1d026d1f77
dma_buf_get returns PTR_ERRs, so fix checking for null to proper IS_ERR in gk20a_vm_map_buffer. Buffer mapping from user space with ioctls would also have paniced here if an improper handle would be passed. Change-Id: I245fe41cd209e49fc9265e56340c1c8215ffb1d2 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: http://git-master/r/498320 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>