Hi, This series add the serial_chr_nonnull() which connect to the "null" chardev backend if none is provided.
Inspired by Peter's suggestion: http://lists.nongnu.org/archive/html/qemu-devel/2017-08/msg05987.html which also refers to this issue: http://lists.nongnu.org/archive/html/qemu-devel/2017-08/msg03546.html Some boards still check serial_hds[x] non null before calling serial_mm_init(), this check could now be removed on the SoC which always have an UART mapped. This might be a follow up if this series is accepted. Regards, Phil. Philippe Mathieu-Daudé (7): serial: add serial_chr_nonnull() to use the null backend when none provided serial: use serial_chr_nonnull() in serial_mm_init() hw/arm/fsl_imx*: use serial_chr_nonnull() hw/mips/malta: use serial_chr_nonnull() hw/char/exynos4210_uart: use serial_chr_nonnull() hw/char/omap_uart: serial_mm_init() already check for null chr hw/xtensa: serial_mm_init() already check for null chr include/hw/char/imx_serial.h | 1 + include/hw/char/serial.h | 1 + hw/arm/fsl-imx25.c | 9 +-------- hw/arm/fsl-imx31.c | 9 +-------- hw/arm/fsl-imx6.c | 10 +--------- hw/char/exynos4210_uart.c | 14 ++------------ hw/char/omap_uart.c | 6 ++---- hw/char/serial.c | 15 ++++++++++++++- hw/mips/mips_malta.c | 6 +----- hw/xtensa/xtfpga.c | 4 ---- 10 files changed, 24 insertions(+), 51 deletions(-) -- 2.14.1