On Wed, 1 Jun 2022, Frank Wunderlich wrote: > Hi, > > i get a serial console hang on booting my mt7622 bananapi r64 with 5.18.0 > > [ 0.591802] Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled > [ 0.599915] printk: console [ttyS0] disabled > [ 0.624563] 11002000.serial: ttyS0 at MMIO 0x11002000 (irq = 126, > base_baud = 1562500) is a 16550A > > git bisect points to this commit (cannot revert it alone) > > 6f81fdded0d024c7d4084d434764f30bca1cd6b1 is the first bad commit > commit 6f81fdded0d024c7d4084d434764f30bca1cd6b1 > Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> > Date: Wed Apr 27 15:23:27 2022 +0200 > > serial: 8250_mtk: Make sure to select the right FEATURE_SEL > > Set the FEATURE_SEL at probe time to make sure that BIT(0) is enabled: > this guarantees that when the port is configured as AP UART, the > right register layout is interpreted by the UART IP. > > Signed-off-by: AngeloGioacchino Del Regno > <angelogioacchino.delregno@xxxxxxxxxxxxx> > Cc: stable <stable@xxxxxxxxxxxxxxx> > Link: > https://lore.kernel.org/r/20220427132328.228297-3-angelogioacchino.delregno@xxxxxxxxxxxxx > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > > drivers/tty/serial/8250/8250_mtk.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > merged by 6811a466d27b "Merge tag 'tty-5.18-rc7'" > > reverted these 2 commits works for me > e1bfdbc7daca 2022-04-27 serial: 8250_mtk: Fix register address for > XON/XOFF character > 6f81fdded0d0 2022-04-27 serial: 8250_mtk: Make sure to select the right > FEATURE_SEL > > have see this discussion [1], but can't manage to import mbox file to > thunderbird yet > > regards Frank > > [1] > https://lore.kernel.org/linux-arm-kernel/CAGXv+5Hx7cRwNzLWrExcFGy=MMOc3-0EbqCanv2E0G_DKXLCgg@xxxxxxxxxxxxxx/#t The FEATURE_SEL change is already reverted to fix the problem but it didn't make into 5.18: https://lore.kernel.org/linux-arm-kernel/Yot+xTBus04O9TUu@xxxxxxxxx/T/ -- i.
