diff options
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_sbc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index fa3cae393e13..a4489444ffbc 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -1074,12 +1074,19 @@ sbc_dif_copy_prot(struct se_cmd *cmd, unsigned int sectors, bool read, struct scatterlist *psg; void *paddr, *addr; unsigned int i, len, left; + unsigned int offset = 0; left = sectors * dev->prot_length; for_each_sg(cmd->t_prot_sg, psg, cmd->t_prot_nents, i) { len = min(psg->length, left); + if (offset >= sg->length) { + sg = sg_next(sg); + offset = 0; + sg_off = sg->offset; + } + paddr = kmap_atomic(sg_page(psg)) + psg->offset; addr = kmap_atomic(sg_page(sg)) + sg_off; @@ -1089,6 +1096,7 @@ sbc_dif_copy_prot(struct se_cmd *cmd, unsigned int sectors, bool read, memcpy(addr, paddr, len); left -= len; + offset += len; kunmap_atomic(paddr); kunmap_atomic(addr); } |