Extern or forward variable declaration at include/linux/libata.h, line 1904 References: drivers/ata/ata_generic.c, line 103 drivers/ata/libata-sff.c, line 2547 drivers/ata/libata-sff.c, line 2564 drivers/ata/libata-sff.c, line 2567 drivers/ata/pata_acpi.c, line 212 drivers/ata/pata_amd.c, line 428 drivers/ata/pata_artop.c, line 299 drivers/ata/pata_artop.c, line 308 drivers/ata/pata_atiixp.c, line 258 drivers/ata/pata_atp867x.c, line 280 drivers/ata/pata_cmd64x.c, line 326 drivers/ata/pata_cs5520.c, line 111 drivers/ata/pata_cs5530.c, line 167 drivers/ata/pata_cs5535.c, line 161 drivers/ata/pata_cypress.c, line 118 drivers/ata/pata_efar.c, line 241 drivers/ata/pata_ep93xx.c, line 884 drivers/ata/pata_ftide010.c, line 253 drivers/ata/pata_hpt366.c, line 291 drivers/ata/pata_hpt37x.c, line 589 drivers/ata/pata_hpt37x.c, line 615 drivers/ata/pata_hpt3x2n.c, line 353 drivers/ata/pata_hpt3x3.c, line 144 drivers/ata/pata_icside.c, line 324 drivers/ata/pata_it8213.c, line 236 drivers/ata/pata_it821x.c, line 804 drivers/ata/pata_it821x.c, line 818 drivers/ata/pata_it821x.c, line 834 drivers/ata/pata_jmicron.c, line 114 drivers/ata/pata_macio.c, line 926 drivers/ata/pata_marvell.c, line 103 drivers/ata/pata_mpc52xx.c, line 613 drivers/ata/pata_netcell.c, line 37 drivers/ata/pata_ninja32.c, line 84 drivers/ata/pata_ns87415.c, line 302 drivers/ata/pata_oldpiix.c, line 211 drivers/ata/pata_optidma.c, line 340 drivers/ata/pata_pdc2027x.c, line 143 drivers/ata/pata_pdc202xx_old.c, line 298 drivers/ata/pata_piccolo.c, line 70 drivers/ata/pata_pxa.c, line 155 drivers/ata/pata_radisys.c, line 190 drivers/ata/pata_sc1200.c, line 214 drivers/ata/pata_sch.c, line 78 drivers/ata/pata_serverworks.c, line 264 drivers/ata/pata_sis.c, line 546 drivers/ata/pata_sis.c, line 553 drivers/ata/pata_sl82c105.c, line 245 drivers/ata/pata_triflex.c, line 181 drivers/ata/pata_via.c, line 462 drivers/ata/sata_mv.c, line 709 drivers/ata/sata_nv.c, line 468 drivers/ata/sata_rcar.c, line 648 drivers/ata/sata_sis.c, line 96 drivers/ata/sata_svw.c, line 356 drivers/ata/sata_uli.c, line 83 drivers/ata/sata_via.c, line 133 drivers/ata/sata_vsc.c, line 302 include/linux/libata.h, line 1904