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DM USB: introduce helper functions: index_inc and index_valid

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Introduce helper functions to make code shorter and cleaner.

Tracked-On: #3628
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Xiaoguang Wu
2019-09-09 18:18:56 +08:00
committed by wenlingz
parent d58a766556
commit 1352eca224
5 changed files with 41 additions and 43 deletions
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4
devicemodel/hw/platform/usb_mouse.c
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@@ -336,7 +336,7 @@ umouse_request(void *scarg, struct usb_xfer *xfer)
}
xfer->data[idx].stat = USB_BLOCK_HANDLED;
idx = (idx + 1) % USB_MAX_XFER_BLOCKS;
idx = index_inc(idx, USB_MAX_XFER_BLOCKS);
}
err = USB_ERR_NORMAL_COMPLETION;
@@ -716,7 +716,7 @@ umouse_data_handler(void *scarg, struct usb_xfer *xfer, int dir,
data->stat = USB_BLOCK_HANDLED;
data = NULL;
idx = (idx + 1) % USB_MAX_XFER_BLOCKS;
idx = index_inc(idx, USB_MAX_XFER_BLOCKS);
}
if (!data)
goto done;