[coreboot-gerrit] Change in em100[master]: Use libusb_auto_detach_kernel_driver

[Stefan Reinauer (Code Review)]

Stefan Reinauer has submitted this change. ( https://review.coreboot.org/c/em100/+/47778 )

Change subject: Use libusb_auto_detach_kernel_driver
......................................................................

Use libusb_auto_detach_kernel_driver

Because it also does automatic reattachment after we're done.
This seems irrelevant on Linux.

Signed-off-by: Stefan Reinauer 
Change-Id: Id88d1138e2e2726d44f106740c8332be4ca90cb7
Reviewed-on: https://review.coreboot.org/c/em100/+/47778
Tested-by: build bot (Jenkins) 
Reviewed-by: Angel Pons 
---
M em100.c
1 file changed, 3 insertions(+), 5 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Angel Pons: Looks good to me, approved

diff --git a/em100.c b/em100.c
index ae6d18f..d12e4aa 100644
--- a/em100.c
+++ b/em100.c
@@ -336,11 +336,9 @@
 static int em100_init(struct em100 *em100, libusb_context *ctx,
    	libusb_device_handle *dev)
 {
-	if (libusb_kernel_driver_active(dev, 0) == 1) {
-		if (libusb_detach_kernel_driver(dev, 0) != 0) {
-			printf("Could not detach kernel driver.\n");
-			return 0;
-		}
+	if (libusb_set_auto_detach_kernel_driver(dev, 1) != LIBUSB_SUCCESS) {
+		printf("Can't detach kernel driver.\n");
+		return 0;
    }

if (libusb_claim_interface(dev, 0) < 0) {