Zheyu Ma
3cca43b9a2
ata: pata_marvell: Check the 'bmdma_addr' beforing reading
...
commit aafa9f9583 upstream.
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: Zheyu Ma <zheyuma97@gmail.com >
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
2022-04-27 13:14:11 +02:00
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