[PATCH 0/3] usb console: 2.6.32 regression fixes
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From: Jason Wessel on 16 Sep 2009 23:10 There are 3 regressions in the 2.6.32 development stream for the usb serial console. 1) A hang in the usb serial core due to a unfreed mutex 2) Crash in the usb serial core if you use a serial console because there is a double open of the low level device 3) It is not possible to pass the console baud rate on to the first tty open for any usb serial driver other than the pl2303 (which has device specific baud management). The first open of the usb serial HW has the termios initialized to 9600 baud, and this will override what ever was setup via the original console initialization. The solution is to save the console baud rate and re-use it later on the first open. This patch series only applies to the end of the Greg KH usb tree. It was tested with a pl2303, mct_u232 and ftdi_sio usb serial devices. Jason. Jason Wessel (3): usb console: fix mutex lock regression usb console,usb-serial: fix regression use of serial->console usb console,usb-serial: pass initial console baud on to first tty open drivers/usb/serial/console.c | 2 ++ drivers/usb/serial/usb-serial.c | 32 +++++++++++++++++--------------- include/linux/usb/serial.h | 1 + 3 files changed, 20 insertions(+), 15 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |