On 06/04/11 20:07, Per Forlin wrote: > Previously there has only been one function mmc_wait_for_req > to start and wait for a request. This patch adds > * mmc_start_req - starts a request wihtout waiting > * mmc_wait_for_req_done - waits until request is done > * mmc_pre_req - asks the host driver to prepare for the next job > * mmc_post_req - asks the host driver to clean up after a completed job If MMC core had a queue of requests internally you wouldn't need to provide mmc_pre_req() and mmc_post_req() functions outside of the core. i.e., the mmc block driver would just need to queue up two mmc requests and the core would take care of calling pre_req and post_req at the correct time. Using a MMC request queue has other benefits -- it allows multiple users without having to claim/release the host. This would be useful for (especially multi-function) SDIO. David -- David Vrabel, Senior Software Engineer, Drivers CSR, Churchill House, Cambridge Business Park, Tel: +44 (0)1223 692562 Cowley Road, Cambridge, CB4 0WZ http://www.csr.com/ Member of the CSR plc group of companies. CSR plc registered in England and Wales, registered number 4187346, registered office Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, United Kingdom -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
