On Tue, Mar 27, 2012 at 06:56:02PM +0900, Tomoya MORINAGA wrote: > This driver anticipates pch_uart_verify_port() is not called > during installation. > However, actually pch_uart_verify_port() is called during > installation. > As a result, memory access violation occurs like below. > > 0. initial value: use_dma=0 > 1. starup() > - dma channel is not allocated because use_dma=0 > 2. pch_uart_verify_port() > - Set use_dma=1 > 3. UART processing acts DMA mode because use_dma=1 > - memory access violation occurs! > > This patch fixes the issue. > > Solution: > Whenever pch_uart_verify_port() is called and then > dma channel is not allocated, the channel should be allocated. > > Signed-off-by: Tomoya MORINAGA <tomoya.rohm@xxxxxxxxx> > --- > drivers/tty/serial/pch_uart.c | 4 +++- > 1 files changed, 3 insertions(+), 1 deletions(-) This patch does not apply to 3.4-rc2, so I can not apply it, sorry. Care to redo it? greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
