On Sun, 2019-08-11 at 00:12 +0800, houlong wei wrote:

Hi Bibby, I have inline comment in function cmdq_pkt_write_mask().

On Mon, 2019-07-29 at 15:01 +0800, Bibby Hsieh wrote:

quoted

Define an instruction structure for gce driver to append command.
This structure can make the client's code more readability.

Signed-off-by: Bibby Hsieh <redacted>
Reviewed-by: CK Hu <redacted>
---
 drivers/soc/mediatek/mtk-cmdq-helper.c   | 103 +++++++++++++++--------
 include/linux/mailbox/mtk-cmdq-mailbox.h |   2 +
 2 files changed, 72 insertions(+), 33 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 7aa0517ff2f3..0886c4967ca4 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c

@@ -9,12 +9,24 @@
 #include <linux/mailbox_controller.h>
 #include <linux/soc/mediatek/mtk-cmdq.h>

[...]

quoted

 
 int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys,
 			u16 offset, u32 value, u32 mask)
 {
+	struct cmdq_instruction *inst;
 	u32 offset_mask = offset;
-	int err = 0;
 
 	if (mask != 0xffffffff) {
-		err = cmdq_pkt_append_command(pkt, CMDQ_CODE_MASK, 0, ~mask);
+		inst = cmdq_pkt_append_command(pkt);
+		if (!inst)
+			return -ENOMEM;
+
+		inst->op = CMDQ_CODE_MASK;
+		inst->mask = ~mask;

quoted

 		offset_mask |= CMDQ_WRITE_ENABLE_MASK;
 	}
-	err |= cmdq_pkt_write(pkt, value, subsys, offset_mask);
 
-	return err;
+	return cmdq_pkt_write(pkt, subsys, offset_mask, value);

We need add a type conversion here, (u8)offset_mask, for your new
function type. Er... it's better to remove local variable 'offset_mask'
and replace it with 'offset'.

quoted

 }

[...]



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