git: 4c2819607a76 - stable/13 - rtsx: Fix wakeup race similar to sdhci one fixed in 35547df5c786

[Warner Losh]

The branch stable/13 has been updated by imp:

URL: https://cgit.FreeBSD.org/src/commit/?id=4c2819607a76f022f673e982e31e18402d163975

commit 4c2819607a76f022f673e982e31e18402d163975
Author:     Warner Losh <imp at FreeBSD.org>
AuthorDate: 2021-08-10 23:07:50 +0000
Commit:     Warner Losh <imp at FreeBSD.org>
CommitDate: 2021-09-12 15:56:16 +0000

    rtsx: Fix wakeup race similar to sdhci one fixed in 35547df5c786
    
    rtsx copied code from sdhci, and has the same wakeup race bug that was
    fixed in 35547df5c786, so apply a similar fix here.
    
    Sponsored by:           Netflix
    
    (cherry picked from commit 9339e7c0bd565506092bb0a2618ff32fb04bb2c4)
---
 sys/dev/rtsx/rtsx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/dev/rtsx/rtsx.c b/sys/dev/rtsx/rtsx.c
index 5f6aa04835ef..cae35243d137 100644
--- a/sys/dev/rtsx/rtsx.c
+++ b/sys/dev/rtsx/rtsx.c
@@ -3532,8 +3532,8 @@ rtsx_mmcbr_release_host(device_t bus, device_t child __unused)
 	sc = device_get_softc(bus);
 	RTSX_LOCK(sc);
 	sc->rtsx_bus_busy--;
-	RTSX_UNLOCK(sc);
 	wakeup(&sc->rtsx_bus_busy);
+	RTSX_UNLOCK(sc);
 
 	return (0);
 }