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-rw-r--r--drivers/staging/fwserial/fwserial.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c
index 258ac35fb5af..fe9a68854452 100644
--- a/drivers/staging/fwserial/fwserial.c
+++ b/drivers/staging/fwserial/fwserial.c
@@ -577,8 +577,11 @@ static int fwtty_buffer_rx(struct fwtty_port *port, unsigned char *d, size_t n)
struct buffered_rx *buf;
size_t size = (n + sizeof(struct buffered_rx) + 0xFF) & ~0xFF;
- if (port->buffered + n > HIGH_WATERMARK)
+ if (port->buffered + n > HIGH_WATERMARK) {
+ fwtty_err_ratelimited(port, "overflowed rx buffer: buffered: %d new: %ld wtrmk: %d",
+ port->buffered, n, HIGH_WATERMARK);
return 0;
+ }
buf = kmalloc(size, GFP_ATOMIC);
if (!buf)
return 0;