Tejun Heo 729a6a300e libata: set queue DMA alignment to sector size for ATAPI too ... ata_pio_sectors() expects buffer for each sector to be contained in a single page; otherwise, it ends up overrunning the first page. This is achieved by setting queue DMA alignment. If sector_size is smaller than PAGE_SIZE and all buffers are sector_size aligned, buffer for each sector is always contained in a single page. This wasn't applied to ATAPI devices but IDENTIFY_PACKET is executed as ATA_PROT_PIO and thus uses ata_pio_sectors(). Newer versions of udev issue IDENTIFY_PACKET with unaligned buffer triggering the problem and causing oops. This patch fixes the problem by setting sdev->sector_size to ATA_SECT_SIZE on ATATPI devices and always setting DMA alignment to sector_size. While at it, add a warning for the unlikely but still possible scenario where sector_size is larger than PAGE_SIZE, in which case the alignment wouldn't be enough. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: John Stanley <jpsinthemix@verizon.net> Tested-by: John Stanley <jpsinthemix@verizon.net> Cc: stable@kernel.org Signed-off-by: Jeff Garzik <jgarzik@redhat.com>		2011-01-28 03:16:20 -05:00
..
acard-ahci.c
ahci.c	ahci: add HFLAG_YES_FBS and apply it to 88SE9128	2011-01-28 03:07:04 -05:00
ahci.h
ahci_platform.c
ata_generic.c
ata_piix.c
Kconfig	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
libahci.c
libata-acpi.c
libata-core.c	libata: DVR-212D can't do SETXFER DVD-RW DVR-212D	2011-01-28 03:16:04 -05:00
libata-eh.c
libata-pmp.c
libata-scsi.c	libata: set queue DMA alignment to sector size for ATAPI too	2011-01-28 03:16:20 -05:00
libata-sff.c
libata-transport.c
libata-transport.h
libata.h
Makefile
pata_acpi.c
pata_ali.c
pata_amd.c
pata_artop.c
pata_at32.c
pata_at91.c
pata_atiixp.c
pata_atp867x.c
pata_bf54x.c
pata_cmd64x.c
pata_cmd640.c
pata_cs5520.c
pata_cs5530.c
pata_cs5535.c
pata_cs5536.c
pata_cypress.c
pata_efar.c
pata_hpt3x2n.c	pata_hpt{37x|3x2n}: use pr_*(DRV_NAME ...) instead of printk(KERN_* ...)	2011-01-28 03:07:04 -05:00
pata_hpt3x3.c
pata_hpt37x.c	pata_hpt37x: inherit prereset() method for HPT374	2011-01-28 03:07:04 -05:00
pata_hpt366.c	pata_hpt{366|37x}: use pr_warning(...) instead of printk(KERN_WARNING ...)	2011-01-28 03:07:04 -05:00
pata_icside.c
pata_isapnp.c
pata_it821x.c
pata_it8213.c
pata_ixp4xx_cf.c
pata_jmicron.c
pata_legacy.c
pata_macio.c
pata_marvell.c
pata_mpc52xx.c	pata_mpc52xx: inherit from ata_bmdma_port_ops	2011-01-28 03:07:04 -05:00
pata_mpiix.c
pata_netcell.c
pata_ninja32.c
pata_ns87410.c
pata_ns87415.c
pata_octeon_cf.c
pata_of_platform.c
pata_oldpiix.c
pata_opti.c
pata_optidma.c
pata_palmld.c
pata_pcmcia.c
pata_pdc202xx_old.c
pata_pdc2027x.c
pata_piccolo.c
pata_platform.c
pata_pxa.c
pata_qdi.c
pata_radisys.c
pata_rb532_cf.c
pata_rdc.c
pata_rz1000.c
pata_samsung_cf.c
pata_sc1200.c
pata_scc.c
pata_sch.c
pata_serverworks.c
pata_sil680.c
pata_sis.c
pata_sl82c105.c
pata_triflex.c
pata_via.c
pdc_adma.c
sata_dwc_460ex.c
sata_fsl.c
sata_inic162x.c
sata_mv.c
sata_nv.c
sata_promise.c
sata_promise.h
sata_qstor.c
sata_sil.c
sata_sil24.c
sata_sis.c
sata_svw.c
sata_sx4.c
sata_uli.c
sata_via.c
sata_vsc.c
sis.h