commit d8a6c846924df07af2e48796af8b0a0f03e94f9a
author Daniel Verkamp <daniel@drv.nu> Thu Feb 23 23:27:56 2017 -0700
committer Kevin O'Connor <kevin@koconnor.net> Thu Mar 02 09:48:17 2017 -0500
tree fcfcce48911ff1bc2e6c86eff07d937ff159e2f1
parent 2e82b465fbdb46efdc2ebb638aef17fa7f665dc5

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>

src/hw/nvme.c

diff --git a/src/hw/nvme.c b/src/hw/nvme.c
index 97b05cb..9fda011 100644
--- a/src/hw/nvme.c
+++ b/src/hw/nvme.c
@@ -74,7 +74,7 @@
 static int
 nvme_is_cqe_success(struct nvme_cqe const *cqe)
 {
-    return (cqe->status & 0xFF) >> 1 == 0;
+    return ((cqe->status >> 1) & 0xFF) == 0;
 }