Madhusudhan wrote: > >> -----Original Message----- >> From: David Vrabel [mailto:david.vrabel@xxxxxxx] >> Sent: Wednesday, February 10, 2010 5:52 AM >> To: linux-mmc@xxxxxxxxxxxxxxx >> Cc: David Vrabel; linux-omap@xxxxxxxxxxxxxxx; madhu.cr@xxxxxx >> Subject: [PATCH 1/3] mmc: omap_hsmmc: use packet sync'd DMA >> >> Use packet sync'd DMA in the omap_hsmmc driver to avoid the >> restriction that transfers must be a multiple of the block size. This >> is required for byte-mode transfers to SDIO cards. >> > What is the typical scenario here? Is it IO_RW_EXTENDED with block_mode > turned off? This patch isn't necessary. With byte mode transfers you get a single sg element and the transfer's block size is set to the length of the transfer so frame sync mode works fine. 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
