git: c7b05da29795 - releng/12.4 - mpr: fix copying of event_mask

The branch releng/12.4 has been updated by gordon:

URL: https://cgit.FreeBSD.org/src/commit/?id=c7b05da29795f263c0b511d8ef4755a784439dc4

commit c7b05da29795f263c0b511d8ef4755a784439dc4
Author:     Mariusz Zaborski <oshogbo@FreeBSD.org>
AuthorDate: 2023-04-21 07:50:16 +0000
Commit:     Gordon Tetlow <gordon@FreeBSD.org>
CommitDate: 2023-06-21 05:08:39 +0000

    mpr: fix copying of event_mask
    
    Before the commit 6cc44223cb6717795afdac4348bbe7e2a968a07d the
    field event_mask was fully copied to the EventMasks field.
    After this commit the event_mask (uint8_t) is 4 times casted to
    EventMask (uint32_t). Because of that 24 bits of each event_mask array
    is lost.
    
    This commits brings back simple copying of field, and after words
    converting 32 bits field to the requested endian.
    
    I don't think we need more sophisticated method,
    as the array is of size 4 (for 32 bits version).
    
    Reviewed by:    imp
    MFC after:      1 week
    Sponsored by:   Klara Inc.
    Differential Revision:  https://reviews.freebsd.org/D39562
    
    (cherry picked from commit ea6597c38c77c7bfaae71259d8636cbb89add6a3)
    (cherry picked from commit 2de69df6f398987cecbc5ac02b2183c561e0f220)
    
    Approved by:    so
    Security:       FreeBSD-EN-23:07.mpr
---
 sys/dev/mpr/mpr.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sys/dev/mpr/mpr.c b/sys/dev/mpr/mpr.c
index 308c88112168..33afb7adf852 100644
--- a/sys/dev/mpr/mpr.c
+++ b/sys/dev/mpr/mpr.c
@@ -2795,8 +2795,9 @@ mpr_update_events(struct mpr_softc *sc, struct mpr_event_handle *handle,
 		bcopy(fullmask, (uint8_t *)&evtreq->EventMasks, 16);
 	}
 #else
+	bcopy(sc->event_mask, (uint8_t *)&evtreq->EventMasks, sizeof(sc->event_mask));
 	for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
-		evtreq->EventMasks[i] = htole32(sc->event_mask[i]);
+		evtreq->EventMasks[i] = htole32(evtreq->EventMasks[i]);
 #endif
 	cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
 	cm->cm_data = NULL;
@@ -2850,8 +2851,9 @@ mpr_reregister_events(struct mpr_softc *sc)
 		bcopy(fullmask, (uint8_t *)&evtreq->EventMasks, 16);
 	}
 #else
+	bcopy(sc->event_mask, (uint8_t *)&evtreq->EventMasks, sizeof(sc->event_mask));
 	for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
-		evtreq->EventMasks[i] = htole32(sc->event_mask[i]);
+		evtreq->EventMasks[i] = htole32(evtreq->EventMasks[i]);
 #endif
 	cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
 	cm->cm_data = NULL;