diff options
| author | Ruihong Luo <[email protected]> | 2023-07-13 08:42:36 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2023-07-25 20:31:31 +0200 |
| commit | 748c5ea8b8796ae8ee80b8d3a3d940570b588d59 (patch) | |
| tree | dd8e0bc02ece832eaa42206d09ec0a8128516bfc /lib/crypto/mpi | |
| parent | 57c984f6fe20ebb9306d6e8c09b4f67fe63298c6 (diff) | |
serial: 8250_dw: Preserve original value of DLF register
Preserve the original value of the Divisor Latch Fraction (DLF) register.
When the DLF register is modified without preservation, it can disrupt
the baudrate settings established by firmware or bootloader, leading to
data corruption and the generation of unreadable or distorted characters.
Fixes: 701c5e73b296 ("serial: 8250_dw: add fractional divisor support")
Cc: stable <[email protected]>
Signed-off-by: Ruihong Luo <[email protected]>
Link: https://lore.kernel.org/stable/20230713004235.35904-1-colorsu1922%40gmail.com
Reviewed-by: Ilpo Järvinen <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'lib/crypto/mpi')
0 files changed, 0 insertions, 0 deletions