Messages in this thread Patch in this message | | | From | Alex Elder <> | Subject | [PATCH net-next 8/8] net: ipa: use data space for command opcodes | Date | Fri, 20 May 2022 13:55:33 -0500 |
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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> --- drivers/net/ipa/gsi_trans.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ipa/gsi_trans.h b/drivers/net/ipa/gsi_trans.h index 99ce2cba0dc3c..020c3b32de1d7 100644 --- a/drivers/net/ipa/gsi_trans.h +++ b/drivers/net/ipa/gsi_trans.h @@ -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; -- 2.32.0
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