On Feb 26, 2010, at 1:25 PM, Paul Gortmaker wrote: > Sending a break on the SOC UARTs found in some MPC83xx/85xx/86xx > chips seems to cause a short lived IRQ storm (/proc/interrupts > typically shows somewhere between 300 and 1500 events). Unfortunately > this renders SysRQ over the serial console completely inoperable. > Testing with obvious things like ACKing the event doesn't seem to > change anything vs. a completely dumb approach of just ignoring > it and waiting for it to stop, so that is what is implemented here. > > Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx> > --- > > This is a refresh of a patch I'd done earlier -- I've tried to make > the bug support as generic as possible to minimize having board > specific ifdef crap in 8250.c -- any suggestions on how to further > improve it are welcome. > > drivers/serial/8250.c | 6 ++++++ > drivers/serial/8250.h | 20 ++++++++++++++++++++ > drivers/serial/Kconfig | 14 ++++++++++++++ > include/linux/serial_reg.h | 2 ++ > 4 files changed, 42 insertions(+), 0 deletions(-) Did we ever decide what to do with this or trying to get it accepted upstream? - k-- 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
