diff options
| -rw-r--r-- | lib/libmuser.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/lib/libmuser.c b/lib/libmuser.c index e3a9dfb..64e96fc 100644 --- a/lib/libmuser.c +++ b/lib/libmuser.c @@ -478,8 +478,8 @@ static int muser_mmap(lm_ctx_t * lm_ctx, struct muser_cmd *cmd) unsigned long addr; unsigned long len = cmd->mmap.request.len; unsigned long pgoff = cmd->mmap.request.pgoff; + int err = 0; - region = lm_get_region(lm_ctx, pgoff, len, &pgoff); if (region < 0) { lm_log(lm_ctx, LM_ERR, "bad region %d\n", region); err = region; @@ -492,15 +492,16 @@ static int muser_mmap(lm_ctx_t * lm_ctx, struct muser_cmd *cmd) goto out; } - addr = lm_ctx->pci_info.reg_info[region].map(lm_ctx->pvt, pgoff, len); - - if ((void *)addr == MAP_FAILED) { - lm_log(lm_ctx, LM_ERR, "failed to mmap: %m\n"); - err = -errno; - goto out; - } - - cmd->mmap.response.addr = addr; + if (lm_ctx->pci_info.reg_info[region].map) { + addr = lm_ctx->pci_info.reg_info[region].map(lm_ctx->pvt, pgoff, len); + if ((void *)addr == MAP_FAILED) { + lm_log(lm_ctx, LM_ERR, "failed to mmap: %m\n"); + err = -errno; + goto out; + } + cmd->mmap.response.addr = addr; + } else + err = -ENOTSUP; out: if (err) { @@ -509,6 +510,7 @@ out: cmd->err = err; err = -1; } + return err; } |