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Subject[PATCH v3 3/6] usb:common Patch simplify usb_decode_set_clear_feature function.
Date
Patch adds usb_decode_test_mode and usb_decode_device_feature functions,
which allow to make more readable and simplify the
usb_decode_set_clear_feature function.

Signed-off-by: Pawel Laszczak <pawell@cadence.com>
---
drivers/usb/common/debug.c | 83 ++++++++++++++++++--------------------
1 file changed, 40 insertions(+), 43 deletions(-)

diff --git a/drivers/usb/common/debug.c b/drivers/usb/common/debug.c
index 824b3d793745..bdd529a686e4 100644
--- a/drivers/usb/common/debug.c
+++ b/drivers/usb/common/debug.c
@@ -29,6 +29,44 @@ static void usb_decode_get_status(__u8 bRequestType, __u16 wIndex,
}
}

+static const char *usb_decode_device_feature(u16 wValue)
+{
+ switch (wValue) {
+ case USB_DEVICE_SELF_POWERED:
+ return "Self Powered";
+ case USB_DEVICE_REMOTE_WAKEUP:
+ return "Remote Wakeup";
+ case USB_DEVICE_TEST_MODE:
+ return "Test Mode";
+ case USB_DEVICE_U1_ENABLE:
+ return "U1 Enable";
+ case USB_DEVICE_U2_ENABLE:
+ return "U2 Enable";
+ case USB_DEVICE_LTM_ENABLE:
+ return "LTM Enable";
+ default:
+ return "UNKNOWN";
+ }
+}
+
+static const char *usb_decode_test_mode(u16 wIndex)
+{
+ switch (wIndex) {
+ case TEST_J:
+ return ": TEST_J";
+ case TEST_K:
+ return ": TEST_K";
+ case TEST_SE0_NAK:
+ return ": TEST_SE0_NAK";
+ case TEST_PACKET:
+ return ": TEST_PACKET";
+ case TEST_FORCE_EN:
+ return ": TEST_FORCE_EN";
+ default:
+ return ": UNKNOWN";
+ }
+}
+
static void usb_decode_set_clear_feature(__u8 bRequestType,
__u8 bRequest, __u16 wValue,
__u16 wIndex, char *str)
@@ -37,50 +75,9 @@ static void usb_decode_set_clear_feature(__u8 bRequestType,
case USB_RECIP_DEVICE:
sprintf(str, "%s Device Feature(%s%s)",
bRequest == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
- ({char *s;
- switch (wValue) {
- case USB_DEVICE_SELF_POWERED:
- s = "Self Powered";
- break;
- case USB_DEVICE_REMOTE_WAKEUP:
- s = "Remote Wakeup";
- break;
- case USB_DEVICE_TEST_MODE:
- s = "Test Mode";
- break;
- case USB_DEVICE_U1_ENABLE:
- s = "U1 Enable";
- break;
- case USB_DEVICE_U2_ENABLE:
- s = "U2 Enable";
- break;
- case USB_DEVICE_LTM_ENABLE:
- s = "LTM Enable";
- break;
- default:
- s = "UNKNOWN";
- } s; }),
+ usb_decode_device_feature(wValue),
wValue == USB_DEVICE_TEST_MODE ?
- ({ char *s;
- switch (wIndex) {
- case TEST_J:
- s = ": TEST_J";
- break;
- case TEST_K:
- s = ": TEST_K";
- break;
- case TEST_SE0_NAK:
- s = ": TEST_SE0_NAK";
- break;
- case TEST_PACKET:
- s = ": TEST_PACKET";
- break;
- case TEST_FORCE_EN:
- s = ": TEST_FORCE_EN";
- break;
- default:
- s = ": UNKNOWN";
- } s; }) : "");
+ usb_decode_test_mode(wIndex) : "");
break;
case USB_RECIP_INTERFACE:
sprintf(str, "%s Interface Feature(%s)",
--
2.17.1
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