The D_CAN controller supports up to 128 messages. Until now the driver only managed 32 messages although Sitara processors and DRA7 SOC can handle 64. The series was tested on a beaglebone board. Note: I have not changed the type of tx_field (belonging to the c_can_priv structure) to atomic64_t because I think the atomic_t type has size of at least 32 bits on x86 and arm, which is enough to handle 64 messages. http://marc.info/?l=linux-can&m=139746476821294&w=2 reports the results of tests performed just on x86 and arm architectures. Changes in v2: - Fix compiling error reported by kernel test robot. - Add Reported-by tag. - Pass larger size to alloc_candev() routine to avoid an additional memory allocation/deallocation. - Add message objects number to PCI driver data. Dario Binacchi (6): can: c_can: remove unused code can: c_can: fix indentation can: c_can: fix control interface used by c_can_do_tx can: c_can: use 32-bit write to set arbitration register can: c_can: prepare to up the message objects number can: c_can: add support to 64 message objects drivers/net/can/c_can/c_can.c | 77 +++++++++++++++----------- drivers/net/can/c_can/c_can.h | 32 +++++------ drivers/net/can/c_can/c_can_pci.c | 6 +- drivers/net/can/c_can/c_can_platform.c | 6 +- 4 files changed, 68 insertions(+), 53 deletions(-) -- 2.17.1
