• J
    scsi: libsas: fix ata xfer length · 9702c67c
    John Garry 提交于
    The total ata xfer length may not be calculated properly, in that we do
    not use the proper method to get an sg element dma length.
    
    According to the code comment, sg_dma_len() should be used after
    dma_map_sg() is called.
    
    This issue was found by turning on the SMMUv3 in front of the hisi_sas
    controller in hip07. Multiple sg elements were being combined into a
    single element, but the original first element length was being use as
    the total xfer length.
    
    Cc: <stable@vger.kernel.org>
    Fixes: ff2aeb1e ("libata: convert to chained sg")
    Signed-off-by: NJohn Garry <john.garry@huawei.com>
    Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
    9702c67c
sas_ata.c 21.7 KB