This patch converts the struct mcp251xfd_tef_ring member within the struct mcp251xfd_priv into an array of length one. This way all rings (tef, tx and rx) can be accessed in the same way.
Link: https://lore.kernel.org/r/20201126132144.351154-4-...@pengutronix.de Tested-by: Thomas Kopp <thomas.k...@microchip.com> Signed-off-by: Marc Kleine-Budde <m...@pengutronix.de> --- drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c | 18 ++++++++++-------- drivers/net/can/spi/mcp251xfd/mcp251xfd.h | 8 ++++---- 2 files changed, 14 insertions(+), 12 deletions(-) diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c index c770733ecbcc..551499d9737f 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c @@ -326,6 +326,7 @@ mcp251xfd_tx_ring_init_tx_obj(const struct mcp251xfd_priv *priv, static void mcp251xfd_ring_init(struct mcp251xfd_priv *priv) { + struct mcp251xfd_tef_ring *tef_ring; struct mcp251xfd_tx_ring *tx_ring; struct mcp251xfd_rx_ring *rx_ring, *prev_rx_ring = NULL; struct mcp251xfd_tx_obj *tx_obj; @@ -335,8 +336,9 @@ static void mcp251xfd_ring_init(struct mcp251xfd_priv *priv) int i, j; /* TEF */ - priv->tef.head = 0; - priv->tef.tail = 0; + tef_ring = priv->tef; + tef_ring->head = 0; + tef_ring->tail = 0; /* TX */ tx_ring = priv->tx; @@ -1219,7 +1221,7 @@ mcp251xfd_handle_tefif_recover(const struct mcp251xfd_priv *priv, const u32 seq) tef_sta & MCP251XFD_REG_TEFSTA_TEFFIF ? "full" : tef_sta & MCP251XFD_REG_TEFSTA_TEFNEIF ? "not empty" : "empty", - seq, priv->tef.tail, priv->tef.head, tx_ring->head); + seq, priv->tef->tail, priv->tef->head, tx_ring->head); /* The Sequence Number in the TEF doesn't match our tef_tail. */ return -EAGAIN; @@ -1243,7 +1245,7 @@ mcp251xfd_handle_tefif_one(struct mcp251xfd_priv *priv, */ seq_masked = seq & field_mask(MCP251XFD_OBJ_FLAGS_SEQ_MCP2517FD_MASK); - tef_tail_masked = priv->tef.tail & + tef_tail_masked = priv->tef->tail & field_mask(MCP251XFD_OBJ_FLAGS_SEQ_MCP2517FD_MASK); if (seq_masked != tef_tail_masked) return mcp251xfd_handle_tefif_recover(priv, seq); @@ -1261,7 +1263,7 @@ mcp251xfd_handle_tefif_one(struct mcp251xfd_priv *priv, if (err) return err; - priv->tef.tail++; + priv->tef->tail++; tx_ring->tail++; return mcp251xfd_check_tef_tail(priv); @@ -1281,12 +1283,12 @@ static int mcp251xfd_tef_ring_update(struct mcp251xfd_priv *priv) /* chip_tx_tail, is the next TX-Object send by the HW. * The new TEF head must be >= the old head, ... */ - new_head = round_down(priv->tef.head, tx_ring->obj_num) + chip_tx_tail; - if (new_head <= priv->tef.head) + new_head = round_down(priv->tef->head, tx_ring->obj_num) + chip_tx_tail; + if (new_head <= priv->tef->head) new_head += tx_ring->obj_num; /* ... but it cannot exceed the TX head. */ - priv->tef.head = min(new_head, tx_ring->head); + priv->tef->head = min(new_head, tx_ring->head); return mcp251xfd_check_tef_tail(priv); } diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h index 97dc182e2b42..76585a40d16e 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h @@ -583,7 +583,7 @@ struct mcp251xfd_priv { struct spi_device *spi; u32 spi_max_speed_hz_orig; - struct mcp251xfd_tef_ring tef; + struct mcp251xfd_tef_ring tef[1]; struct mcp251xfd_tx_ring tx[1]; struct mcp251xfd_rx_ring *rx[1]; @@ -744,17 +744,17 @@ mcp251xfd_get_rx_obj_addr(const struct mcp251xfd_rx_ring *ring, u8 n) static inline u8 mcp251xfd_get_tef_head(const struct mcp251xfd_priv *priv) { - return priv->tef.head & (priv->tx->obj_num - 1); + return priv->tef->head & (priv->tx->obj_num - 1); } static inline u8 mcp251xfd_get_tef_tail(const struct mcp251xfd_priv *priv) { - return priv->tef.tail & (priv->tx->obj_num - 1); + return priv->tef->tail & (priv->tx->obj_num - 1); } static inline u8 mcp251xfd_get_tef_len(const struct mcp251xfd_priv *priv) { - return priv->tef.head - priv->tef.tail; + return priv->tef->head - priv->tef->tail; } static inline u8 mcp251xfd_get_tef_linear_len(const struct mcp251xfd_priv *priv) -- 2.29.2
