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(parent: 9ea40db) | patch
tty: serial: fsl_lpuart: fix lpuart32_poll_get_char
authorPeng Fan <peng.fan@nxp.com>
Tue, 29 Sep 2020 09:55:09 +0000 (17:55 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 30 Sep 2020 12:29:36 +0000 (14:29 +0200)
commit29788ab1d2bf26c130de8f44f9553ee78a27e8d5
tree82797543f21cfe9e2c780aa5411789088dfd64datree | snapshot
parent9ea40db477c024dcb87321b7f32bd6ea12130ac2commit | diff
tty: serial: fsl_lpuart: fix lpuart32_poll_get_char

The watermark is set to 1, so we need to input two chars to trigger RDRF
using the original logic. With the new logic, we could always get the
char when there is data in FIFO.

Suggested-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20200929095509.21680-1-peng.fan@nxp.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/fsl_lpuart.c diff | blob | history
Domain: System / Kernel;