diff options
Diffstat (limited to 'drivers/staging/fwserial')
-rw-r--r-- | drivers/staging/fwserial/fwserial.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c index 815c011..59e90e6 100644 --- a/drivers/staging/fwserial/fwserial.c +++ b/drivers/staging/fwserial/fwserial.c @@ -174,10 +174,15 @@ static void dump_profile(struct seq_file *m, struct stats *stats) #define dump_profile(m, stats) #endif -/* Returns the max receive packet size for the given node */ +/* + * Returns the max receive packet size for the given node + * Devices which are OHCI v1.0/ v1.1/ v1.2-draft or RFC 2734 compliant + * are required by specification to support max_rec of 8 (512 bytes) or more. + */ static inline int device_max_receive(struct fw_device *fw_device) { - return 1 << (clamp_t(int, fw_device->max_rec, 8U, 11U) + 1); + /* see IEEE 1394-2008 table 8-8 */ + return min(2 << fw_device->max_rec, 4096); } static void fwtty_log_tx_error(struct fwtty_port *port, int rcode) |