usb: gadget: aspeed_udc: fix handling of tx_len == 0

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The bug is that we should still enter this loop if "tx_len" is zero.

After adding the "last" variable, then the "chunk >= 0" condition is no
longer required but I left it for readability.

Fixes: c09b1f372e ("usb: gadget: aspeed_udc: cleanup loop in ast_dma_descriptor_setup()")
Reported-by: Neal Liu <neal_liu@aspeedtech.com>
Reviewed-by: Neal Liu <neal_liu@aspeedtech.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/Yrq6F5okoX1y05rT@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Dan Carpenter 2022-06-28 11:21:43 +03:00 • committed by Greg Kroah-Hartman

parent babfcd947e

commit 70cdb930f7

1 changed files with 6 additions and 3 deletions

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drivers/usb/gadget/udc/aspeed_udc.c

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