nvme: fix extraction of status code bits

The status code field is 8 bits wide starting at bit 1; the previous
code would truncate the top bit.

Signed-off-by: Daniel Verkamp <daniel@drv.nu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

diff --git a/src/hw/nvme.c b/src/hw/nvme.c
index 97b05cb74841be8b6c473a26c27e10073f882629..9fda011aea1880540b38ce555b648ca12d33c8f6 100644 (file)
--- a/src/hw/nvme.c
+++ b/src/hw/nvme.c
@@ -74,7 +74,7 @@ nvme_poll_cq(struct nvme_cq *cq)
 static int
 nvme_is_cqe_success(struct nvme_cqe const *cqe)
 {
-    return (cqe->status & 0xFF) >> 1 == 0;
+    return ((cqe->status >> 1) & 0xFF) == 0;
 }