* [PATCH] i3c: dw: make struct dw_i3c_cmd smaller
@ 2026-08-13 4:46 ` Jisheng Zhang
0 siblings, 0 replies; 2+ messages in thread
From: Jisheng Zhang @ 2026-08-13 4:46 UTC (permalink / raw)
To: Alexandre Belloni, Frank Li; +Cc: linux-i3c, linux-kernel
The dw_i3c_cmd is dynamically allocated, make it smaller. For example
on 64bit platforms, we reduce the size from 48 bytes to 32 bytes.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
drivers/i3c/master/dw-i3c-master.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
index 6ba84a97765f..d6f84f0f4c2d 100644
--- a/drivers/i3c/master/dw-i3c-master.c
+++ b/drivers/i3c/master/dw-i3c-master.c
@@ -247,10 +247,10 @@ struct dw_i3c_cmd {
u32 cmd_lo;
u32 cmd_hi;
u16 tx_len;
- const void *tx_buf;
u16 rx_len;
- void *rx_buf;
u8 error;
+ const void *tx_buf;
+ void *rx_buf;
};
struct dw_i3c_xfer {
--
2.51.0
--
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^ permalink raw reply related [flat|nested] 2+ messages in thread* [PATCH] i3c: dw: make struct dw_i3c_cmd smaller
@ 2026-08-13 4:46 ` Jisheng Zhang
0 siblings, 0 replies; 2+ messages in thread
From: Jisheng Zhang @ 2026-08-13 4:46 UTC (permalink / raw)
To: Alexandre Belloni, Frank Li; +Cc: linux-i3c, linux-kernel
The dw_i3c_cmd is dynamically allocated, make it smaller. For example
on 64bit platforms, we reduce the size from 48 bytes to 32 bytes.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
drivers/i3c/master/dw-i3c-master.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
index 6ba84a97765f..d6f84f0f4c2d 100644
--- a/drivers/i3c/master/dw-i3c-master.c
+++ b/drivers/i3c/master/dw-i3c-master.c
@@ -247,10 +247,10 @@ struct dw_i3c_cmd {
u32 cmd_lo;
u32 cmd_hi;
u16 tx_len;
- const void *tx_buf;
u16 rx_len;
- void *rx_buf;
u8 error;
+ const void *tx_buf;
+ void *rx_buf;
};
struct dw_i3c_xfer {
--
2.51.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2026-08-13 4:46 [PATCH] i3c: dw: make struct dw_i3c_cmd smaller Jisheng Zhang
2026-08-13 4:46 ` Jisheng Zhang
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