Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 75b780bd authored by Sonic Zhang's avatar Sonic Zhang Committed by Bryan Wu
Browse files

[Blackfin] serial driver: Fix bug Free rx dma buffer in shutdown. 

Kernel crash for the serial driver in DMA mode:
http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3679



Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: default avatarBryan Wu <bryan.wu@analog.com>
parent 1b73351c

drivers/serial/bfin_5xx.c

+1 −0
Original line number Diff line number Diff line
@@ -704,6 +704,7 @@ static void bfin_serial_shutdown(struct uart_port *port) 
	disable_dma(uart->rx_dma_channel);

	free_dma(uart->rx_dma_channel);

	del_timer(&(uart->rx_dma_timer));

	dma_free_coherent(NULL, PAGE_SIZE, uart->rx_dma_buf.buf, 0);

#else

#ifdef	CONFIG_KGDB_UART

	if (uart->port.line != CONFIG_KGDB_UART_PORT)