diff options
| -rw-r--r-- | drivers/staging/fsl_qbman/fsl_usdpaa.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/staging/fsl_qbman/fsl_usdpaa.c b/drivers/staging/fsl_qbman/fsl_usdpaa.c index e2e3308..0549bae 100644 --- a/drivers/staging/fsl_qbman/fsl_usdpaa.c +++ b/drivers/staging/fsl_qbman/fsl_usdpaa.c @@ -922,7 +922,7 @@ static long ioctl_dma_map(struct file *fp, struct ctx *ctx, unsigned long next_addr = PAGE_SIZE, populate; /* error checking to ensure values copied from user space are valid */ - if (!i->len || (i->len % PAGE_SIZE)) + if (i->len % PAGE_SIZE) return -EINVAL; map = kmalloc(sizeof(*map), GFP_KERNEL); @@ -942,6 +942,13 @@ static long ioctl_dma_map(struct file *fp, struct ctx *ctx, ret = -EBUSY; goto out; } + + /* Check to ensure size matches record */ + if (i->len != frag->map_len && i->len) { + pr_err("ioctl_dma_map() Size requested does not match %s and is none zero. This usage will be disallowed in future release\n", + frag->name); + } + /* Check if this has already been mapped to this process */ list_for_each_entry(tmp, &ctx->maps, list) @@ -1669,6 +1676,8 @@ static long usdpaa_ioctl_compat(struct file *fp, unsigned int cmd, ret = ioctl_dma_map(fp, ctx, &converted); input.ptr = ptr_to_compat(converted.ptr); input.phys_addr = converted.phys_addr; + input.len = converted.len; + input.flags = converted.flags; strncpy(input.name, converted.name, USDPAA_DMA_NAME_MAX); input.has_locking = converted.has_locking; input.did_create = converted.did_create; |