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| author | Marnix Rijnart <marnix.rijnart@iwell.eu> | 2026-01-12 03:08:23 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-16 16:29:10 +0300 |
| commit | 27aff0a56b3c77ea1a73641c9b3c4172a8f7238f (patch) | |
| tree | 486840d40ba8a53dff8e402c257c5cf9b9c2f791 /include/linux/devfs_fs_kernel.h | |
| parent | fb47423dc7bf43301048d77289ce0114959de4de (diff) | |
| download | linux-27aff0a56b3c77ea1a73641c9b3c4172a8f7238f.tar.xz | |
serial: 8250_pci: Fix broken RS485 for F81504/508/512
Fintek F81504/508/512 can support both RTS_ON_SEND and RTS_AFTER_SEND,
but pci_fintek_rs485_supported only announces the former.
This makes it impossible to unset SER_RS485_RTS_ON_SEND from
userspace because of uart_sanitize_serial_rs485(). Some devices
with these chips need RTS low on TX, so they are effectively broken.
Fix this by announcing the support for SER_RS485_RTS_AFTER_SEND,
similar to commit 068d35a7be65 ("serial: sc16is7xx: announce support
for SER_RS485_RTS_ON_SEND").
Fixes: 4afeced55baa ("serial: core: fix sanitizing check for RTS settings")
Cc: stable <stable@kernel.org>
Signed-off-by: Marnix Rijnart <marnix.rijnart@iwell.eu>
Link: https://patch.msgid.link/20260112000931.61703-1-marnix.rijnart@iwell.eu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/devfs_fs_kernel.h')
0 files changed, 0 insertions, 0 deletions