From: Ludovic Barre <ludovic.barre@xxxxxx>
This patch replaces stm32 tty name ttyS by ttySTM
to avoid a name conflict when Serial: 8250/16550 driver
is activated.
sysfs: cannot create duplicate filename '/class/tty/ttyS3'
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.14.0-12903-gb392521-dirty #1
[<c03118dc>] (unwind_backtrace) from [<c030c950>] (show_stack+0x10/0x14)
[<c030c950>] (show_stack) from [<c0d31e18>] (dump_stack+0x90/0xa4)
[<c0d31e18>] (dump_stack) from [<c03430a0>] (__warn+0xf8/0x110)
[<c03430a0>] (__warn) from [<c03430f0>] (warn_slowpath_fmt+0x38/0x48)
[<c03430f0>] (warn_slowpath_fmt) from [<c04ce574>] (sysfs_warn_dup+0x68/0x78)
[<c04ce574>] (sysfs_warn_dup) from [<c04ce824>] (sysfs_do_create_link_sd+0xb4/0xc4)
[<c04ce824>] (sysfs_do_create_link_sd) from [<c08c60ec>] (device_add+0x204/0x574)
[<c08c60ec>] (device_add) from [<c07a7ddc>] (tty_register_device_attr+0xc8/0x1bc)
[<c07a7ddc>] (tty_register_device_attr) from [<c07c6530>] (uart_add_one_port+0x22c/0x4f4)
Signed-off-by: Ludovic Barre <ludovic.barre@xxxxxx>
---
drivers/tty/serial/stm32-usart.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/stm32-usart.h b/drivers/tty/serial/stm32-usart.h
index 8a5ff54..2294d0f 100644
--- a/drivers/tty/serial/stm32-usart.h
+++ b/drivers/tty/serial/stm32-usart.h
@@ -236,7 +236,7 @@ struct stm32_usart_info stm32h7_info = {
#define USART_ICR_CMCF BIT(17) /* F7 */
#define USART_ICR_WUCF BIT(20) /* H7 */
-#define STM32_SERIAL_NAME "ttyS"
+#define STM32_SERIAL_NAME "ttySTM"
#define STM32_MAX_PORTS 8
#define RX_BUF_L 200 /* dma rx buffer length */
--
2.7.4
--
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