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This patch resolves most of the problems with an SMP serial console race with output via the tty path. At the end of the serial console print we force enable the tx int in case we clobbered the tx interrupt status racing between the console and tty output. That way the extra tx interrupt causes the transmit path to restart not hang. It also makes the serial console printk use the FIFO. This is neccessary because some remote management devices fake serial console with FIFO and are confused into sending one packet per character over ethernet when we stall rather than filling the FIFO. In order to preserve existing reliability semantics the function waits for the serial queue to completely empty before returning. Both of these problems were identified by a Red Hat partner. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> |
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| .. | ||
| cpm_uart | ||
| jsm | ||
| 8250_accent.c | ||
| 8250_acorn.c | ||
| 8250_acpi.c | ||
| 8250_au1x00.c | ||
| 8250_boca.c | ||
| 8250_early.c | ||
| 8250_fourport.c | ||
| 8250_gsc.c | ||
| 8250_hp300.c | ||
| 8250_hub6.c | ||
| 8250_mca.c | ||
| 8250_pci.c | ||
| 8250_pnp.c | ||
| 8250.c | ||
| 8250.h | ||
| 21285.c | ||
| 68328serial.c | ||
| 68328serial.h | ||
| 68360serial.c | ||
| amba-pl010.c | ||
| amba-pl011.c | ||
| at91_serial.c | ||
| au1x00_uart.c | ||
| clps711x.c | ||
| crisv10.c | ||
| crisv10.h | ||
| dz.c | ||
| dz.h | ||
| icom.c | ||
| icom.h | ||
| imx.c | ||
| ioc3_serial.c | ||
| ioc4_serial.c | ||
| ip22zilog.c | ||
| ip22zilog.h | ||
| Kconfig | ||
| m32r_sio_reg.h | ||
| m32r_sio.c | ||
| m32r_sio.h | ||
| Makefile | ||
| mcfserial.c | ||
| mcfserial.h | ||
| mpc52xx_uart.c | ||
| mpsc.c | ||
| mpsc.h | ||
| mux.c | ||
| pmac_zilog.c | ||
| pmac_zilog.h | ||
| pxa.c | ||
| s3c2410.c | ||
| sa1100.c | ||
| serial_core.c | ||
| serial_cs.c | ||
| serial_lh7a40x.c | ||
| serial_txx9.c | ||
| sh-sci.c | ||
| sh-sci.h | ||
| sn_console.c | ||
| suncore.c | ||
| suncore.h | ||
| sunsab.c | ||
| sunsab.h | ||
| sunsu.c | ||
| sunzilog.c | ||
| sunzilog.h | ||
| v850e_uart.c | ||
| vr41xx_siu.c | ||