[PATCH v2] usertools/devbind: support all possible values in sysfs flag

[Rogelio Domínguez Hernández]

This patch adds support for 'y' and 'Y' values when reading
vfio-pci unsafe_noiommu_mode flag.

Possible values were taken from linux kernel
(sysfs__read_bool() in tools/lib/api/fs/fs.c)

Signed-off-by: Rogelio Domínguez Hernández <rogelio.dominguez at gmail.com>
---
 usertools/dpdk-devbind.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/usertools/dpdk-devbind.py b/usertools/dpdk-devbind.py
index 80c35f9ab6..e8660098fd 100755
--- a/usertools/dpdk-devbind.py
+++ b/usertools/dpdk-devbind.py
@@ -490,7 +490,8 @@ def check_noiommu_mode():
 
     try:
         with open(filename, "r") as f:
-            if f.read(1) == "1":
+            value = f.read(1)
+            if value in ("1", "y" ,"Y"):
                 return
     except OSError as err:
         sys.exit(f"Error: failed to check unsafe noiommu mode - Cannot open {filename}: {err}")
-- 
2.45.2