ata: pata_marvell: Check the 'bmdma_addr' beforing reading
stable inclusion from stable-v5.10.113 commit cf23a960c5c62ddd8283a855a742977ee983a62a category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5ISAH Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=cf23a960c5c62ddd8283a855a742977ee983a62a -------------------------------- commit aafa9f95 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> Signed-off-by:
Zheng Zengkai <zhengzengkai@huawei.com> Acked-by:
Xie XiuQi <xiexiuqi@huawei.com>
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