Comment 4 for bug 1892960

The 'Transfer Block Size' field is 12-bit wide.

See section '2.2.2. Block Size Register (Offset 004h)' in datasheet.

Cc: <email address hidden>
Cc: Igor Mitsyanko <email address hidden>
Buglink: https://bugs.launchpad.net/qemu/+bug/1892960
Fixes: d7dfca0807a ("hw/sdhci: introduce standard SD host controller")
Reported-by: Alexander Bulekov <email address hidden>
Signed-off-by: Philippe Mathieu-Daudé <email address hidden>
---
Cc: <email address hidden>
---
 hw/sd/sdhci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
index 60f083b84c1..ecbf84e9d3f 100644
--- a/hw/sd/sdhci.c
+++ b/hw/sd/sdhci.c
@@ -1104,7 +1104,7 @@ sdhci_write(void *opaque, hwaddr offset, uint64_t val, unsigned size)
         break;
     case SDHC_BLKSIZE:
         if (!TRANSFERRING_DATA(s->prnsts)) {
- MASKED_WRITE(s->blksize, mask, value);
+ MASKED_WRITE(s->blksize, mask, extract32(value, 0, 12));
             MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16);
         }

--
2.26.2