treewide: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
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@@ -2341,7 +2341,7 @@ static void netback_changed(struct xenbus_device *dev,
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case XenbusStateClosed:
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if (dev->state == XenbusStateClosed)
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break;
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/* Fall through - Missed the backend's CLOSING state. */
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fallthrough; /* Missed the backend's CLOSING state */
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case XenbusStateClosing:
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xenbus_frontend_closed(dev);
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break;
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