8f9e91ad03
These patches were generated from: https://github.com/raspberrypi/linux/commits/rpi-6.12.y With the following command: git format-patch -N v6.12.27..HEAD (HEAD -> 8d3206ee456a5ecdf9ddbfd8e5e231e4f0cd716e) Exceptions: - (def)configs patches - github workflows patches - applied & reverted patches - readme patches - wireless patches Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
26 lines
837 B
Diff
26 lines
837 B
Diff
From f9ac7286c1223889ea23a53d58dcad4cb6fc1cbb Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Fri, 2 Feb 2024 15:41:29 +0000
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Subject: [PATCH] serial: sc16is7xx: Don't spin if no data received
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There are multiple causes of interrupts, errors being one, and only the
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receipt of data warrants continued polling.
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See: https://github.com/raspberrypi/linux/issues/2676
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/tty/serial/sc16is7xx.c | 2 ++
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1 file changed, 2 insertions(+)
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--- a/drivers/tty/serial/sc16is7xx.c
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+++ b/drivers/tty/serial/sc16is7xx.c
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@@ -821,6 +821,8 @@ static bool sc16is7xx_port_irq(struct sc
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if (rxlen)
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sc16is7xx_handle_rx(port, rxlen, iir);
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+ else
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+ rc = false;
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break;
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/* CTSRTS interrupt comes only when CTS goes inactive */
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case SC16IS7XX_IIR_CTSRTS_SRC:
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