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X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org 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 --- Changes in V3: Added Frank Li's Reviewed-by tag. Changes in V2: Reworded the subject, which was previously "i3c: mipi-i3c-hci: Fix Response Descriptor DATA_LENGTH mask", to name the macro and the corrected bit range. 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) -- 2.53.0 -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c