Some tidying as suggested by Grant Grundler. Nuke local bit-counting function from sata_mv in favour of using hweight16(). Also add a short explanation for the 15msec timeout used when waiting for empty/idle. Signed-off-by: Mark Lord <mlord@xxxxxxxxx> --- This makes 13 patches now, rather than just 12. --- old/drivers/ata/sata_mv.c 2008-05-01 20:29:40.000000000 -0400 +++ linux/drivers/ata/sata_mv.c 2008-05-02 13:53:07.000000000 -0400 @@ -903,6 +903,10 @@ /* * Wait for the EDMA engine to finish transactions in progress. + * No idea what a good "timeout" value might be, but measurements + * indicate that it often requires hundreds of microseconds + * with two drives in-use. So we use the 15msec value above + * as a rough guess at what even more drives might require. */ for (i = 0; i < timeout; ++i) { u32 edma_stat = readl(port_mmio + EDMA_STATUS_OFS); @@ -1640,17 +1644,6 @@ return readl(port_mmio + SATA_TESTCTL_OFS) >> 16; } -static int mv_count_pmp_links(unsigned int pmp_map) -{ - unsigned int link_count = 0; - - while (pmp_map) { - link_count += (pmp_map & 1); - pmp_map >>= 1; - } - return link_count; -} - static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map) { struct ata_eh_info *ehi; @@ -1701,7 +1694,7 @@ pp->delayed_eh_pmp_map = new_map; mv_pmp_eh_prep(ap, new_map & ~old_map); } - failed_links = mv_count_pmp_links(new_map); + failed_links = hweight16(new_map); ata_port_printk(ap, KERN_INFO, "%s: pmp_map=%04x qc_map=%04x " "failed_links=%d nr_active_links=%d\n", -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html