OpenCloudOS-Kernel/drivers/net/ethernet/altera
Tomonori Sakita 6571ebce11 net: altera_tse: fix msgdma_tx_completion on non-zero fill_level case
If fill_level was not zero and status was not BUSY,
result of "tx_prod - tx_cons - inuse" might be zero.
Subtracting 1 unconditionally results invalid negative return value
on this case.
Make sure not to return an negative value.

Signed-off-by: Tomonori Sakita <tomonori.sakita@sord.co.jp>
Signed-off-by: Atsushi Nemoto <atsushi.nemoto@sord.co.jp>
Reviewed-by: Dalon L Westergreen <dalon.westergreen@linux.intel.com>
Acked-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-27 10:39:07 -08:00
..
Kconfig Altera TSE: ALTERA_TSE should depend on HAS_DMA 2014-05-05 13:16:22 -04:00
Makefile Makefile: drop -D__CHECK_ENDIAN__ from cflags 2016-12-16 00:13:43 +02:00
altera_msgdma.c net: altera_tse: fix msgdma_tx_completion on non-zero fill_level case 2019-01-27 10:39:07 -08:00
altera_msgdma.h Altera TSE: Work around unaligned DMA receive packet issue with Altera SGDMA 2014-04-26 12:26:26 -04:00
altera_msgdmahw.h net: eth: altera: Resolve false errors from MSGDMA to TSE 2015-04-25 14:41:52 -04:00
altera_sgdma.c net: eth: altera: Remove sgdmadesclen member from altera_tse_private 2015-08-12 14:31:07 -07:00
altera_sgdma.h Altera TSE: Work around unaligned DMA receive packet issue with Altera SGDMA 2014-04-26 12:26:26 -04:00
altera_sgdmahw.h net: eth: altera: Remove sgdmadesclen member from altera_tse_private 2015-08-12 14:31:07 -07:00
altera_tse.h net: ethernet: altera_tse: add support for SGMII PCS 2016-12-02 10:36:47 -05:00
altera_tse_ethtool.c net: ethernet: altera_tse: use phy_ethtool_{get|set}_link_ksettings 2016-06-22 16:22:41 -04:00
altera_tse_main.c net: altera_tse: fix connect_local_phy error path 2019-01-22 17:44:57 -08:00
altera_utils.c Altera TSE: Fix sparse errors and warnings 2014-05-15 16:46:46 -04:00
altera_utils.h Altera TSE: Fix sparse errors and warnings 2014-05-15 16:46:46 -04:00