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From: Christian Asam <Christian.Asam@chasam.de>
To: <linux-kernel@vger.kernel.org>
Subject: Problem with serial.c introduced in 2.4.15
Date: Sun, 24 Mar 2002 17:57:08 +0100
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After having found that my VM-Problem (USB/MOD) was due to an old 
kernel I upgraded to 2.4.18 and found that I couldn't use my digitizer 
board (Genius) with gpm(genitizer) anymoure.
I tracked it down to a change made from 2.4.14 to 2.4.15:

drivers/char/serial.c:
#if 0   /*
         * !!! ignore all characters if CREAD is not set
         */
        if ((cflag & CREAD) == 0)
                info->ignore_status_mask |= UART_LSR_DR;
#endif

The #if 0 and #endif was removed in 2.4.15 and somehow that breaks 
gpm/genitizer. Having added the "commenting out through $if 0" the 
tablet works fine again and deactivating the appropriate line in 2.4.18 
also works.

cu
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