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(parent: 6300b14) | patch
serial: tegra: protect IER against LCR.DLAB
authorAhung Cheng <ahcheng@nvidia.com>
Mon, 12 Aug 2019 11:28:13 +0000 (16:58 +0530)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 4 Sep 2019 10:43:54 +0000 (12:43 +0200)
commit18a4c404d2b4de47da519955ddda0b153c03f12d
tree9646656d1b4027f00878473791ecce9e1b2badectree | snapshot
parent6300b140c29fdcd45e84fb551196a6e38dadddcccommit | diff
serial: tegra: protect IER against LCR.DLAB

The IER and DLH registers occupy the same address space, selected by
the LCR.DLAB bit. Hence, add port lock to protect IER when LCR.DLAB bit
is set.

Signed-off-by: Ahung Cheng <ahcheng@nvidia.com>
Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/1565609303-27000-5-git-send-email-kyarlagadda@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/serial-tegra.c diff | blob | history
Domain: System / Kernel;