diff options
| author | Valentin Caron <[email protected]> | 2022-01-11 17:44:40 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2022-01-26 14:52:44 +0100 |
| commit | d3d079bde07e1b7deaeb57506dc0b86010121d17 (patch) | |
| tree | d8dc75df0226186049947b5a38bccb77bd85cd00 /drivers/usb/cdns3/cdns3-ep0.c | |
| parent | 8838b2af23caf1ff0610caef2795d6668a013b2d (diff) | |
serial: stm32: prevent TDR register overwrite when sending x_char
When sending x_char in stm32_usart_transmit_chars(), driver can overwrite
the value of TDR register by the value of x_char. If this happens, the
previous value that was present in TDR register will not be sent through
uart.
This code checks if the previous value in TDR register is sent before
writing the x_char value into register.
Fixes: 48a6092fb41f ("serial: stm32-usart: Add STM32 USART Driver")
Cc: stable <[email protected]>
Signed-off-by: Valentin Caron <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-ep0.c')
0 files changed, 0 insertions, 0 deletions