diff options
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/greybus/core.c | 5 | ||||
| -rw-r--r-- | drivers/staging/greybus/operation.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/staging/greybus/core.c b/drivers/staging/greybus/core.c index e32d6c4..91dcc5b 100644 --- a/drivers/staging/greybus/core.c +++ b/drivers/staging/greybus/core.c @@ -188,6 +188,11 @@ struct greybus_host_device *greybus_create_hd(struct greybus_host_driver *driver return NULL; } + if (buffer_size_max < GB_OPERATION_MESSAGE_SIZE_MIN) { + dev_err(parent, "greybus host-device buffers too small\n"); + return NULL; + } + /* * Make sure to never allocate messages larger than what the Greybus * protocol supports. diff --git a/drivers/staging/greybus/operation.h b/drivers/staging/greybus/operation.h index 1edd512..740aacc 100644 --- a/drivers/staging/greybus/operation.h +++ b/drivers/staging/greybus/operation.h @@ -69,6 +69,7 @@ struct gb_operation_msg_hdr { __u8 pad[2]; /* must be zero (ignore when read) */ } __aligned(sizeof(u64)); +#define GB_OPERATION_MESSAGE_SIZE_MIN sizeof(struct gb_operation_msg_hdr) #define GB_OPERATION_MESSAGE_SIZE_MAX U16_MAX /* |