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(parent: 97ddd91) | patch
serial: imx: fix the wrong number of scatterlist entries when xmit->head is 0
authorHuang Shijie <b32955@freescale.com>
Fri, 11 Oct 2013 10:31:00 +0000 (18:31 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 16 Oct 2013 20:19:54 +0000 (13:19 -0700)
commit738dbf7a78ca0087895982099716d5b9d0cd34e7
tree5bd87c7ebff2080ce785ec4b0aaff51e2533e55atree | snapshot
parent97ddd91d67d1534eaec74ecc0892c05ff99008abcommit | diff
serial: imx: fix the wrong number of scatterlist entries when xmit->head is 0

When the (xmit->tail > xmit->head) is true and the xmit->head is 0,
we only need one DMA scatterlist in actually. Current code uses two DMA
scatterlists in this case, this is obviously wrong.

This patch fixes it.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/imx.c diff | blob | history
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