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net: ipa: use data space for command opcodes

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The 64-bit data field in a transaction is not used for commands.
And the opcode array is *only* used for commands.  They're
(currently) the same size; save a little space in the transaction
structure by enclosing the two fields in a union.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alex Elder 2022-05-21 19:32:23 -05:00 committed by David S. Miller
parent 8797972aff
commit a224bd4b88
1 changed files with 4 additions and 2 deletions

6
drivers/net/ipa/gsi_trans.h
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@ -60,8 +60,10 @@ struct gsi_trans {
u8 used; /* # entries used in sgl[] */
u32 len; /* total # bytes across sgl[] */
void *data;
u8 cmd_opcode[IPA_COMMAND_TRANS_TRE_MAX];
union {
void *data;
u8 cmd_opcode[IPA_COMMAND_TRANS_TRE_MAX];
};
struct scatterlist *sgl;
enum dma_data_direction direction;