usb: gadget: use a computation macro for INT endpoint interval

The 5+4 magic for HS tries to aim 32ms which is also what is intended
with 1 << 5 for FS. This little macro should make this easier to
understand.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c
index b1681e45aca7..61f4b13c6cf5 100644
--- a/drivers/usb/gadget/f_rndis.c
+++ b/drivers/usb/gadget/f_rndis.c
@@ -101,7 +101,7 @@ static unsigned int bitrate(struct usb_gadget *g)
 /*
  */
 
-#define LOG2_STATUS_INTERVAL_MSEC       5       /* 1 << 5 == 32 msec */
+#define RNDIS_STATUS_INTERVAL_MS        32
 #define STATUS_BYTECOUNT                8       /* 8 bytes data */
 
 
@@ -190,7 +190,7 @@ static struct usb_endpoint_descriptor fs_notify_desc = {
         .bEndpointAddress =     USB_DIR_IN,
         .bmAttributes =         USB_ENDPOINT_XFER_INT,
         .wMaxPacketSize =       cpu_to_le16(STATUS_BYTECOUNT),
-        .bInterval =            1 << LOG2_STATUS_INTERVAL_MSEC,
+        .bInterval =            RNDIS_STATUS_INTERVAL_MS,
 };
 
 static struct usb_endpoint_descriptor fs_in_desc = {
@@ -236,7 +236,7 @@ static struct usb_endpoint_descriptor hs_notify_desc = {
         .bEndpointAddress =     USB_DIR_IN,
         .bmAttributes =         USB_ENDPOINT_XFER_INT,
         .wMaxPacketSize =       cpu_to_le16(STATUS_BYTECOUNT),
-        .bInterval =            LOG2_STATUS_INTERVAL_MSEC + 4,
+        .bInterval =            USB_MS_TO_HS_INTERVAL(RNDIS_STATUS_INTERVAL_MS)
 };
 
 static struct usb_endpoint_descriptor hs_in_desc = {
@@ -284,7 +284,7 @@ static struct usb_endpoint_descriptor ss_notify_desc = {
         .bEndpointAddress =     USB_DIR_IN,
         .bmAttributes =         USB_ENDPOINT_XFER_INT,
         .wMaxPacketSize =       cpu_to_le16(STATUS_BYTECOUNT),
-        .bInterval =            LOG2_STATUS_INTERVAL_MSEC + 4,
+        .bInterval =            USB_MS_TO_HS_INTERVAL(RNDIS_STATUS_INTERVAL_MS)
 };
 
 static struct usb_ss_ep_comp_descriptor ss_intr_comp_desc = {