From de243c3dd2e57803e36efc5d2de98ae9a76434d2 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Sun, 20 Sep 2026 18:12:42 +0300 Subject: [PATCH] i3c: mipi-i3c-hci: Correct RESP_DATA_LENGTH to bits 15:0 The I3C HCI Response Descriptor defines DATA_LENGTH in Bits[15:0], with Bits[23:16] reserved in all published HCI specification versions: v1.0 (Table 91) and v1.1/v1.2 (Section 8.5). However, RESP_DATA_LENGTH extracts Bits[21:0], incorrectly including six reserved bits. Update the mask to match the defined field width. No functional change is expected because compliant controllers return zero in reserved fields. Signed-off-by: Adrian Hunter Reviewed-by: Frank Li Link: https://patch.msgid.link/20260920151248.46936-13-adrian.hunter@intel.com Signed-off-by: Alexandre Belloni --- drivers/i3c/master/mipi-i3c-hci/cmd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i3c/master/mipi-i3c-hci/cmd.h b/drivers/i3c/master/mipi-i3c-hci/cmd.h index 7bada7b4b2de..e0d4a6e0e319 100644 --- a/drivers/i3c/master/mipi-i3c-hci/cmd.h +++ b/drivers/i3c/master/mipi-i3c-hci/cmd.h @@ -24,7 +24,7 @@ */ #define RESP_STATUS(resp) FIELD_GET(GENMASK(31, 28), resp) #define RESP_TID(resp) FIELD_GET(GENMASK(27, 24), resp) -#define RESP_DATA_LENGTH(resp) FIELD_GET(GENMASK(21, 0), resp) +#define RESP_DATA_LENGTH(resp) FIELD_GET(GENMASK(15, 0), resp) #define RESP_ERR_FIELD GENMASK(31, 28)