The branch main has been updated by jhb:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=b08a56ad4608586ce457838655db7e59a126e08d

commit b08a56ad4608586ce457838655db7e59a126e08d
Author:     John Baldwin <[email protected]>
AuthorDate: 2022-04-08 00:01:26 +0000
Commit:     John Baldwin <[email protected]>
CommitDate: 2022-04-08 00:01:26 +0000

    mxgbe: Remove a dummy variable used to force a register read.
    
    Keep the register read by casting the result of the pointer indirect
    to void.
---
 sys/dev/mxge/if_mxge.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sys/dev/mxge/if_mxge.c b/sys/dev/mxge/if_mxge.c
index aea6459e41b6..2c175ed6fdc7 100644
--- a/sys/dev/mxge/if_mxge.c
+++ b/sys/dev/mxge/if_mxge.c
@@ -686,7 +686,6 @@ mxge_load_firmware_helper(mxge_softc_t *sc, uint32_t *limit)
        unsigned hdr_offset;
        int status;
        unsigned int i;
-       char dummy;
        size_t fw_len;
 
        fw = firmware_get(sc->fw_name);
@@ -743,7 +742,7 @@ mxge_load_firmware_helper(mxge_softc_t *sc, uint32_t *limit)
                              inflate_buffer + i,
                              min(256U, (unsigned)(fw_len - i)));
                wmb();
-               dummy = *sc->sram;
+               (void)*sc->sram;
                wmb();
        }
 

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