Hi All, i have been tweaking the pvr250 driver to support pvr150s/500s. now i want to remove Giant from the code.
problem is, i am not sure what to do. i have created a mutex which replaces the spltty and splx calls. but this crashes my box :-) the original code looks like this: /* * Allocate a DMA tag for the scatter / gather list. */ error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, CXM_SG_BUFFERS * sizeof(struct cxm_sg_entry), 1, BUS_SPACE_MAXSIZE_32BIT, 0, #if __FreeBSD_version >= 501102 busdma_lock_mutex, &Giant, #endif &sc->enc_sg.dmat); what should it look like? and how will i prevent the interrupt routine from interfering with userland operations? can i place a "mtx_lock()" call in the interrupt routine? is there a howto somewhere? regards, usleep _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"