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can: mcp251xfd: mcp25xxfd_ring_alloc(): add define instead open coding the maximum number of RX objects

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This patch add a define for the maximum number of RX objects instead of open
coding it.

Link: https://lore.kernel.org/r/20201126132144.351154-2-mkl@pengutronix.de
Tested-by: Thomas Kopp <thomas.kopp@microchip.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde 2020-11-26 14:21:40 +01:00
parent 368444dd7a
commit 4843ad9b61
2 changed files with 3 additions and 1 deletions
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3
drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
View File

@ -416,7 +416,8 @@ static int mcp251xfd_ring_alloc(struct mcp251xfd_priv *priv)
int rx_obj_num;
rx_obj_num = ram_free / rx_obj_size;
rx_obj_num = min(1 << (fls(rx_obj_num) - 1), 32);
rx_obj_num = min(1 << (fls(rx_obj_num) - 1),
MCP251XFD_RX_OBJ_NUM_MAX);
rx_ring = kzalloc(sizeof(*rx_ring) + rx_obj_size * rx_obj_num,
GFP_KERNEL);

1
drivers/net/can/spi/mcp251xfd/mcp251xfd.h
View File

@ -368,6 +368,7 @@
* FIFO setup: tef: 8*12 bytes = 96 bytes, tx: 8*16 bytes = 128 bytes
* FIFO setup: tef: 4*12 bytes = 48 bytes, tx: 4*72 bytes = 288 bytes
*/
#define MCP251XFD_RX_OBJ_NUM_MAX 32
#define MCP251XFD_TX_OBJ_NUM_CAN 8
#define MCP251XFD_TX_OBJ_NUM_CANFD 4