• Zheyu Ma's avatar
    ata: pata_marvell: Check the 'bmdma_addr' beforing reading · aafa9f95
    Zheyu Ma authored
    Before detecting the cable type on the dma bar, the driver should check
    whether the 'bmdma_addr' is zero, which means the adapter does not
    support DMA, otherwise we will get the following error:
    
    [    5.146634] Bad IO access at port 0x1 (return inb(port))
    [    5.147206] WARNING: CPU: 2 PID: 303 at lib/iomap.c:44 ioread8+0x4a/0x60
    [    5.150856] RIP: 0010:ioread8+0x4a/0x60
    [    5.160238] Call Trace:
    [    5.160470]  <TASK>
    [    5.160674]  marvell_cable_detect+0x6e/0xc0 [pata_marvell]
    [    5.161728]  ata_eh_recover+0x3520/0x6cc0
    [    5.168075]  ata_do_eh+0x49/0x3c0
    Signed-off-by: default avatarZheyu Ma <zheyuma97@gmail.com>
    Signed-off-by: default avatarDamien Le Moal <damien.lemoal@opensource.wdc.com>
    aafa9f95
pata_marvell.c 4.14 KB